NASCAR Track Types and Groupings

Utilise track groupings based on Accupredict's Track Groupings, track shape, and common track types to analyse more data across similar tracks, helping you make smarter predictions and race decisions for each NASCAR event.

Track Type, Shape & Size Groupings

Select a track to see how different methods group them with other tracks.

Select a grouping to see all the tracks in that group.

ACCUPREDICT Track Grouping
NASCAR Groups by Track Shape
NASCAR Groups by Track Size

Accupredict Track Groupings

Restrictor Plate Track

Daytona International Speedway
Daytona International Speedway

Daytona Beach, FL

  • Backstretch : 6-degrees
  • Backstretch : 3,000 feet
  • Frontstretch : 6-degrees
  • Frontstretch : 3,800 feet
  • Tri-Oval : 18-degrees
  • Turns 1 & 2 : 31-degrees
  • Turns 3 & 4 : 31-degrees
  • Surface Asphalt

Restrictor Plate

Restrictor Plate Tracks are designed to reduce speeds and increase safety by using restrictor plates to limit engine power. These tracks, such as Daytona, Talladega (and now also Atlanta), are known for high-speed pack racing and frequent lead changes. Success on restrictor plate tracks depends on drafting skills, strategic positioning, and the ability to avoid multi-car accidents.

Front and backstretches range from 0° to 5°.

Tri-Oval is 18°

Turns range from 28° to 33°.

Restrictor Plate Track Group

  • Atlanta Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 28-degrees
    • Turns 3 & 4 : 28-degrees
  • Daytona International Speedway
    • Backstretch : 6-degrees
    • Frontstretch : 6-degrees
    • Tri-Oval : 18-degrees
    • Turns 1 & 2 : 31-degrees
    • Turns 3 & 4 : 31-degrees
  • Talladega Superspeedway
    • Backstretch : Minimal for drainage only
    • Trioval : 18-degrees
    • Turns 1 & 2 : 33-degrees
    • Turns 3 & 4 : 33-degrees
    • Frontstretch : Minimal for drainage only

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Tri-oval Track

Daytona International Speedway
Daytona International Speedway

Daytona Beach, FL

Daytona International Speedway

Tri-oval

The tri-oval, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. Its design offers superior sightlines, allowing fans in the grandstands an angular perspective of the cars approaching and moving away. This eliminates the need for fans to look back and forth like in traditional ovals, providing more forward sight lines.

A tri-oval resembles an isosceles triangle with rounded corners. The backstretch is typically straight, while the main straightaway, housing the pit area and grandstands, features a "tri-oval" curve, often considered a fifth turn. This skewed main stretch enhances visibility for spectators. Most tri-ovals place the start-finish line at the apex of the tri-oval curve. However, tracks like Talladega and Walt Disney World Speedway have the start-finish line on the straight between the curve and turn one. Despite their advantages, modern tri-ovals are sometimes called "cookie cutters" due to their nearly identical shapes and racing styles.

Tri-oval Tracks

  • Daytona International Speedway
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Las Vegas Motor Speedway
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Phoenix Raceway
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

NASCAR 'Size' Groupings

Superspeedway

Daytona International Speedway
Daytona International Speedway

Daytona Beach, FL

2.5 miles

  • Backstretch : 3,000 feet
  • Frontstretch : 3,800 feet

Superspeedway

A superspeedway is an oval track of 2 miles or longer. The most famous are Indianapolis Motor Speedway and Daytona International Speedway, both 2.5 miles. Built in 1909 and 1959, they host the Indianapolis 500, Brickyard 400, and Daytona 500.

Talladega Superspeedway, 2.66 miles, holds the fastest stock car speed record. Daytona and Talladega use restrictor plates to reduce speeds due to steep banking.

Other NASCAR superspeedways include Michigan International Speedway, Auto Club Speedway, and Pocono Raceway. Auto Club and Michigan are similar to intermediate tracks; Pocono and Indianapolis are long, flat tracks.

Superspeedway Tracks

  • Daytona International Speedway 2.5 miles
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Indianapolis Motor Speedway 2.5 miles
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet
  • Michigan International Speedway 2 miles
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Pocono Raceway 2.5 miles
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet
  • Talladega Superspeedway 2.66 miles
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet

Accupredict Track Groupings

Steep Track

Las Vegas Motor Speedway
Las Vegas Motor Speedway

Las Vegas, NV

  • Backstretch : 9-degrees
  • Backstretch : 1,572 feet
  • Frontstretch : 9-degrees
  • Frontstretch : 2,275 feet
  • Turns 1 & 2 : 20-degrees
  • Turns 3 & 4 : 20-degrees
  • Surface Asphalt

Steep

Steep Tracks have significant banking, allowing for higher speeds and better grip in the turns. This banking helps cars maintain higher cornering speeds, making races on these tracks particularly thrilling. Notable steep tracks include Bristol, Dover, and Darlington. Drivers' success on steep tracks often hinges on their ability to handle high-speed turns and maintain control under intense conditions.

Front and backstretches range from 2° to 9°.

Turns range from 18° to 30°.

Steep Track Group

  • Bristol Motor Speedway
    • Backstretch : 4- to 9-degrees
    • Frontstretch : 4- to 9-degrees
    • Turns 1 & 2 : 24- to 30-degrees
    • Turns 3 & 4 : 24- to 30-degrees
  • Darlington Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 3-degrees
    • Turns 1 & 2 : 1/2- to 25-degrees
    • Turns 3 & 4 : 1/2- to 25-degrees
  • Dover Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Homestead Miami Speedway
    • Backstretch : 4-degrees
    • Frontstretch : 4-degrees
    • Turns 1 & 2 : 18 to 20-degrees
    • Turns 3 & 4 : 18 to 20-degrees
  • Las Vegas Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 20-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Tri-oval Track

Las Vegas Motor Speedway
Las Vegas Motor Speedway

Las Vegas, NV

Las Vegas Motor Speedway

Tri-oval

The tri-oval, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. Its design offers superior sightlines, allowing fans in the grandstands an angular perspective of the cars approaching and moving away. This eliminates the need for fans to look back and forth like in traditional ovals, providing more forward sight lines.

A tri-oval resembles an isosceles triangle with rounded corners. The backstretch is typically straight, while the main straightaway, housing the pit area and grandstands, features a "tri-oval" curve, often considered a fifth turn. This skewed main stretch enhances visibility for spectators. Most tri-ovals place the start-finish line at the apex of the tri-oval curve. However, tracks like Talladega and Walt Disney World Speedway have the start-finish line on the straight between the curve and turn one. Despite their advantages, modern tri-ovals are sometimes called "cookie cutters" due to their nearly identical shapes and racing styles.

Tri-oval Tracks

  • Daytona International Speedway
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Las Vegas Motor Speedway
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Phoenix Raceway
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

NASCAR 'Size' Groupings

Intermediate

Las Vegas Motor Speedway
Las Vegas Motor Speedway

Las Vegas, NV

1.5 miles

  • Backstretch : 1,572 feet
  • Frontstretch : 2,275 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Restrictor Plate Track

Atlanta Motor Speedway
Atlanta Motor Speedway

Hampton, GA

  • Backstretch : 5-degrees
  • Backstretch : 1,800 feet
  • Frontstretch : 5-degrees
  • Frontstretch : 2,332 feet
  • Turns 1 & 2 : 28-degrees
  • Turns 3 & 4 : 28-degrees
  • Surface Asphalt
  • Last Repave 2021
  • Track Width 40-feet

Restrictor Plate

Restrictor Plate Tracks are designed to reduce speeds and increase safety by using restrictor plates to limit engine power. These tracks, such as Daytona, Talladega (and now also Atlanta), are known for high-speed pack racing and frequent lead changes. Success on restrictor plate tracks depends on drafting skills, strategic positioning, and the ability to avoid multi-car accidents.

Front and backstretches range from 0° to 5°.

Tri-Oval is 18°

Turns range from 28° to 33°.

Restrictor Plate Track Group

  • Atlanta Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 28-degrees
    • Turns 3 & 4 : 28-degrees
  • Daytona International Speedway
    • Backstretch : 6-degrees
    • Frontstretch : 6-degrees
    • Tri-Oval : 18-degrees
    • Turns 1 & 2 : 31-degrees
    • Turns 3 & 4 : 31-degrees
  • Talladega Superspeedway
    • Backstretch : Minimal for drainage only
    • Trioval : 18-degrees
    • Turns 1 & 2 : 33-degrees
    • Turns 3 & 4 : 33-degrees
    • Frontstretch : Minimal for drainage only

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Atlanta Motor Speedway
Atlanta Motor Speedway

Hampton, GA

Atlanta Motor Speedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Intermediate

Atlanta Motor Speedway
Atlanta Motor Speedway

Hampton, GA

1.54 miles

  • Backstretch : 1,800 feet
  • Frontstretch : 2,332 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Steep Track

Bristol Motor Speedway
Bristol Motor Speedway

Bristol, TN

  • Backstretch : 4- to 9-degrees
  • Backstretch : 650 feet
  • Frontstretch : 4- to 9-degrees
  • Frontstretch : 650 feet
  • Turns 1 & 2 : 24- to 30-degrees
  • Turns 1 & 2 : 588 feet
  • Turns 3 & 4 : 24- to 30-degrees
  • Turns 3 & 4 : 588 feet
  • Surface Concrete
  • Track Width 43 feet

Steep

Steep Tracks have significant banking, allowing for higher speeds and better grip in the turns. This banking helps cars maintain higher cornering speeds, making races on these tracks particularly thrilling. Notable steep tracks include Bristol, Dover, and Darlington. Drivers' success on steep tracks often hinges on their ability to handle high-speed turns and maintain control under intense conditions.

Front and backstretches range from 2° to 9°.

Turns range from 18° to 30°.

Steep Track Group

  • Bristol Motor Speedway
    • Backstretch : 4- to 9-degrees
    • Frontstretch : 4- to 9-degrees
    • Turns 1 & 2 : 24- to 30-degrees
    • Turns 3 & 4 : 24- to 30-degrees
  • Darlington Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 3-degrees
    • Turns 1 & 2 : 1/2- to 25-degrees
    • Turns 3 & 4 : 1/2- to 25-degrees
  • Dover Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Homestead Miami Speedway
    • Backstretch : 4-degrees
    • Frontstretch : 4-degrees
    • Turns 1 & 2 : 18 to 20-degrees
    • Turns 3 & 4 : 18 to 20-degrees
  • Las Vegas Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 20-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Stadium Oval Track

Bristol Motor Speedway
Bristol Motor Speedway

Bristol, TN

Bristol Motor Speedway

Stadium Oval

A typical oval track consists of two parallel straights connected by two 180° turns. Although most ovals have two radii curves, they are often labeled as four 90° turns. While many ovals follow a traditional symmetrical design, asymmetrical tracks are not uncommon.

A sub-classification of the traditional oval shape is the "stadium" oval. Unlike the paper clip oval, the straight sections are relatively short compared to the curves, making it closest in form to a circle. The curves usually have high banking, offering a unique challenge.

Stadium Oval Tracks

  • Bristol Motor Speedway
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Dover Motor Speedway
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • Homestead Miami Speedway
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Lucas Oil Indianapolis Raceway Park
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • New Hampshire Motor Speedway
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • North Wilkesboro Speedway
    • --

NASCAR 'Size' Groupings

Short Track

Bristol Motor Speedway
Bristol Motor Speedway

Bristol, TN

0.533 miles

  • Backstretch : 650 feet
  • Frontstretch : 650 feet
  • Turns 1 & 2 : 588 feet
  • Turns 3 & 4 : 588 feet

Short Track

A short track is an oval less than one mile (1.6 km), often 0.5 miles (0.8 km) or shorter. Drivers usually start their careers on these tracks, nicknamed "bullrings" for their short length and fast action. Professional NASCAR races on short tracks often cover 500 or 400 laps. Many have lights for night races.

Short tracks are crucial for NASCAR's feeder series. Three are in the Cup Series: Bristol, Martinsville, and Richmond. Tracks with potential for future Cup races include Iowa Speedway (built in 2006), Nashville Fairgrounds Speedway (used until 1984), and Memphis Motorsports Park (hosted Busch Series races until the 2000s).

Short Track Tracks

  • Bristol Motor Speedway 0.533 miles
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Iowa Speedway 0.875 miles
    • --
  • Los Angeles Memorial Coliseum 0.25 miles
    • --
  • Lucas Oil Indianapolis Raceway Park 0.685 miles
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • Martinsville Speedway 0.526 miles
    • Backstretch : 800 feet
    • Frontstretch : 800 feet
  • North Wilkesboro Speedway 0.625 miles
    • --
  • Richmond Raceway 0.75 miles
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet

Accupredict Track Groupings

Flat Track

Martinsville Speedway
Martinsville Speedway

Ridgeway, VA

  • Backstretch : 0-degrees (flat)
  • Backstretch : 800 feet
  • Frontstretch : 0-degrees (flat)
  • Frontstretch : 800 feet
  • Track Width 55 feet
  • Turns 1 & 2 : 12-degrees
  • Turns 3 & 4 : 12-degrees
  • Surface Asphalt (straightaways) and Concrete on Asphalt (turns)

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Paper Clip Oval Track

Martinsville Speedway
Martinsville Speedway

Ridgeway, VA

Martinsville Speedway

Paper Clip Oval

A typical oval track consists of two parallel straights connected by two 180° turns. While many ovals follow this symmetrical design, asymmetrical tracks like the "paper clip" oval are also common.

The paper clip oval is a sub-classification of the traditional oval shape. It features two long straights connected by two sharp, tight-radius turns, resembling a paper clip. These tracks are challenging, with little banking, making the turns slow and tight to maneuver. This layout is classic for short tracks and some mile ovals. Most short tracks are paper clips, but some 1-mile tracks also have this shape.

Paper Clip Oval Tracks

  • Los Angeles Memorial Coliseum
    • --
  • Martinsville Speedway
    • Backstretch : 800 feet
    • Frontstretch : 800 feet

NASCAR 'Size' Groupings

Short Track

Martinsville Speedway
Martinsville Speedway

Ridgeway, VA

0.526 miles

  • Backstretch : 800 feet
  • Frontstretch : 800 feet

Short Track

A short track is an oval less than one mile (1.6 km), often 0.5 miles (0.8 km) or shorter. Drivers usually start their careers on these tracks, nicknamed "bullrings" for their short length and fast action. Professional NASCAR races on short tracks often cover 500 or 400 laps. Many have lights for night races.

Short tracks are crucial for NASCAR's feeder series. Three are in the Cup Series: Bristol, Martinsville, and Richmond. Tracks with potential for future Cup races include Iowa Speedway (built in 2006), Nashville Fairgrounds Speedway (used until 1984), and Memphis Motorsports Park (hosted Busch Series races until the 2000s).

Short Track Tracks

  • Bristol Motor Speedway 0.533 miles
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Iowa Speedway 0.875 miles
    • --
  • Los Angeles Memorial Coliseum 0.25 miles
    • --
  • Lucas Oil Indianapolis Raceway Park 0.685 miles
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • Martinsville Speedway 0.526 miles
    • Backstretch : 800 feet
    • Frontstretch : 800 feet
  • North Wilkesboro Speedway 0.625 miles
    • --
  • Richmond Raceway 0.75 miles
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet

Accupredict Track Groupings

Large Oval Track

Texas Motor Speedway
Texas Motor Speedway

Fort Worth, TX

  • Backstretch : 5-degrees
  • Backstretch : 1,330 feet
  • Frontstretch : 5-degrees
  • Frontstretch : 2,250 feet
  • Turns 1 & 2 : 20-degrees
  • Turns 1 & 2 Radius 750 feet
  • Turns 3 & 4 : 24-degrees
  • Turns 3 & 4 Radius 750 feet
  • : on Dogleg 5-degrees
  • Surface Asphalt
  • Turns 1 & 2 Width 80 feet
  • Turns 3 & 4 Width 60 feet

Large Oval

Large Oval Tracks include tracks that do not fit neatly into the traditional oval categories but share similarities with larger, more challenging circuits. These tracks offer a mix of speed and technical driving. When first developed, the Accupredict Tracks in this category included Atlanta (prior to the 2021 reconfiguration), California (Auto Club Speedway prior to its reconfiguration to a Short Track), Chicagoland (now defunct), Michigan, Las Vegas, Kansas, Kentucky (now defunct), and Texas. These tracks require a blend of strategic racing and high-speed performance.

Front and backstretches range from 5° to 12°.

Turns range from 17° to 24°.

Large Oval Track Group

  • Charlotte Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Kansas Speedway
    • Backstretch : 5.5-degrees
    • Frontstretch : 10-degrees
    • Turns 1 & 2 : 17- to 20-degrees variable banking
    • Turns 3 & 4 : 17- to 20-degrees variable banking
  • Michigan International Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 12-degrees
    • Turns 1 & 2 : 18-degrees
    • Turns 3 & 4 : 18-degrees
  • Texas Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 24-degrees
    • : on Dogleg 5-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Texas Motor Speedway
Texas Motor Speedway

Fort Worth, TX

Texas Motor Speedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Intermediate

Texas Motor Speedway
Texas Motor Speedway

Fort Worth, TX

1.5 miles

  • Backstretch : 1,330 feet
  • Frontstretch : 2,250 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Flat Track

Phoenix Raceway
Phoenix Raceway

Phoenix, AZ

  • Backstretch : 0-degrees (flat)
  • Backstretch : 1,551 feet
  • Frontstretch : 0-degrees (flat)
  • Frontstretch : 1,179 feet
  • Turns 1 & 2 : 11-degrees
  • Surface Asphalt
  • Turns 3 & 4 : 9-degrees

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Tri-oval Track

Phoenix Raceway
Phoenix Raceway

Phoenix, AZ

Phoenix Raceway

Tri-oval

The tri-oval, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. Its design offers superior sightlines, allowing fans in the grandstands an angular perspective of the cars approaching and moving away. This eliminates the need for fans to look back and forth like in traditional ovals, providing more forward sight lines.

A tri-oval resembles an isosceles triangle with rounded corners. The backstretch is typically straight, while the main straightaway, housing the pit area and grandstands, features a "tri-oval" curve, often considered a fifth turn. This skewed main stretch enhances visibility for spectators. Most tri-ovals place the start-finish line at the apex of the tri-oval curve. However, tracks like Talladega and Walt Disney World Speedway have the start-finish line on the straight between the curve and turn one. Despite their advantages, modern tri-ovals are sometimes called "cookie cutters" due to their nearly identical shapes and racing styles.

Tri-oval Tracks

  • Daytona International Speedway
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Las Vegas Motor Speedway
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Phoenix Raceway
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

NASCAR 'Size' Groupings

Mile Oval

Phoenix Raceway
Phoenix Raceway

Phoenix, AZ

1.022 miles

  • Backstretch : 1,551 feet
  • Frontstretch : 1,179 feet

Mile Oval

A 1-mile (1.61 km) oval is common in oval track racing. Exact measurements can vary slightly. Most are flat-banked, except for Dover.

Historically, many 1-mile dirt ovals were used by stock cars and champ cars until the early 1970s. These tracks often originated from harness racing and were called "Fairgrounds" tracks, like Arizona, California, and Michigan State Fairgrounds. The Milwaukee Mile, originally for horse racing, is the oldest oval race track.

Only three 1-mile tracks remain on the NASCAR calendar: Phoenix, Loudon, and Dover.

Mile Oval Tracks

  • Dover Motor Speedway 1 miles
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • New Hampshire Motor Speedway 1.058 miles
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • Phoenix Raceway 1.022 miles
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

Accupredict Track Groupings

Restrictor Plate Track

Talladega Superspeedway
Talladega Superspeedway

Lincoln, AL

  • Backstretch : Minimal for drainage only
  • Backstretch : 4,000 feet
  • Trioval : 18-degrees
  • Frontstretch : 4,300 feet
  • Turns 1 & 2 : 33-degrees
  • Turns 1 & 2 : 3,750 feet
  • Turns 1 & 2 Radius 1,100 feet
  • Turns 3 & 4 : 33-degrees
  • Turns 3 & 4 : 3,750 feet
  • Turns 3 & 4 Radius 1,100 feet
  • Frontstretch : Minimal for drainage only
  • Surface Asphalt

Restrictor Plate

Restrictor Plate Tracks are designed to reduce speeds and increase safety by using restrictor plates to limit engine power. These tracks, such as Daytona, Talladega (and now also Atlanta), are known for high-speed pack racing and frequent lead changes. Success on restrictor plate tracks depends on drafting skills, strategic positioning, and the ability to avoid multi-car accidents.

Front and backstretches range from 0° to 5°.

Tri-Oval is 18°

Turns range from 28° to 33°.

Restrictor Plate Track Group

  • Atlanta Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 28-degrees
    • Turns 3 & 4 : 28-degrees
  • Daytona International Speedway
    • Backstretch : 6-degrees
    • Frontstretch : 6-degrees
    • Tri-Oval : 18-degrees
    • Turns 1 & 2 : 31-degrees
    • Turns 3 & 4 : 31-degrees
  • Talladega Superspeedway
    • Backstretch : Minimal for drainage only
    • Trioval : 18-degrees
    • Turns 1 & 2 : 33-degrees
    • Turns 3 & 4 : 33-degrees
    • Frontstretch : Minimal for drainage only

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Talladega Superspeedway
Talladega Superspeedway

Lincoln, AL

Talladega Superspeedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Superspeedway

Talladega Superspeedway
Talladega Superspeedway

Lincoln, AL

2.66 miles

  • Backstretch : 4,000 feet
  • Frontstretch : 4,300 feet
  • Turns 1 & 2 : 3,750 feet
  • Turns 3 & 4 : 3,750 feet

Superspeedway

A superspeedway is an oval track of 2 miles or longer. The most famous are Indianapolis Motor Speedway and Daytona International Speedway, both 2.5 miles. Built in 1909 and 1959, they host the Indianapolis 500, Brickyard 400, and Daytona 500.

Talladega Superspeedway, 2.66 miles, holds the fastest stock car speed record. Daytona and Talladega use restrictor plates to reduce speeds due to steep banking.

Other NASCAR superspeedways include Michigan International Speedway, Auto Club Speedway, and Pocono Raceway. Auto Club and Michigan are similar to intermediate tracks; Pocono and Indianapolis are long, flat tracks.

Superspeedway Tracks

  • Daytona International Speedway 2.5 miles
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Indianapolis Motor Speedway 2.5 miles
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet
  • Michigan International Speedway 2 miles
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Pocono Raceway 2.5 miles
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet
  • Talladega Superspeedway 2.66 miles
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet

Accupredict Track Groupings

Steep Track

Darlington Raceway
Darlington Raceway

Darlington, SC

  • Backstretch : 2-degrees
  • Backstretch : 1,29 feet
  • Frontstretch : 3-degrees
  • Frontstretch : 1,229 feet
  • Turns 1 & 2 : 1/2- to 25-degrees
  • Turns 3 & 4 : 1/2- to 25-degrees
  • Track Width 90 feet
  • Surface Asphalt

Steep

Steep Tracks have significant banking, allowing for higher speeds and better grip in the turns. This banking helps cars maintain higher cornering speeds, making races on these tracks particularly thrilling. Notable steep tracks include Bristol, Dover, and Darlington. Drivers' success on steep tracks often hinges on their ability to handle high-speed turns and maintain control under intense conditions.

Front and backstretches range from 2° to 9°.

Turns range from 18° to 30°.

Steep Track Group

  • Bristol Motor Speedway
    • Backstretch : 4- to 9-degrees
    • Frontstretch : 4- to 9-degrees
    • Turns 1 & 2 : 24- to 30-degrees
    • Turns 3 & 4 : 24- to 30-degrees
  • Darlington Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 3-degrees
    • Turns 1 & 2 : 1/2- to 25-degrees
    • Turns 3 & 4 : 1/2- to 25-degrees
  • Dover Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Homestead Miami Speedway
    • Backstretch : 4-degrees
    • Frontstretch : 4-degrees
    • Turns 1 & 2 : 18 to 20-degrees
    • Turns 3 & 4 : 18 to 20-degrees
  • Las Vegas Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 20-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Egg-shaped Oval Track

Darlington Raceway
Darlington Raceway

Darlington, SC

Darlington Raceway

Egg-shaped Oval

An egg-shaped oval has non-parallel straights, resulting in curves with different radii. These tracks, often with unique shapes, flat corners, and hard braking zones, produce driving characteristics similar to road courses. Darlington Raceway, the most famous example, was built this way to avoid disturbing an existing minnow pond. Other tracks may share these irregular features, enhancing the driving challenge.

Egg-shaped Oval Tracks

  • Darlington Raceway
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • World Wide Technology Raceway
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

NASCAR 'Size' Groupings

Intermediate

Darlington Raceway
Darlington Raceway

Darlington, SC

1.366 miles

  • Backstretch : 1,29 feet
  • Frontstretch : 1,229 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Flat Track

Richmond Raceway
Richmond Raceway

Richmond, VA

  • Backstretch : 2-degrees
  • Backstretch : 860 feet
  • Frontstretch : 8-degrees
  • Frontstretch : 1,290 feet
  • Turns 1 & 2 : 14-degrees
  • Turns 3 & 4 : 14-degrees
  • Track Width 60 feet (+ 10-foot apron)

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Richmond Raceway
Richmond Raceway

Richmond, VA

Richmond Raceway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Short Track

Richmond Raceway
Richmond Raceway

Richmond, VA

0.75 miles

  • Backstretch : 860 feet
  • Frontstretch : 1,290 feet

Short Track

A short track is an oval less than one mile (1.6 km), often 0.5 miles (0.8 km) or shorter. Drivers usually start their careers on these tracks, nicknamed "bullrings" for their short length and fast action. Professional NASCAR races on short tracks often cover 500 or 400 laps. Many have lights for night races.

Short tracks are crucial for NASCAR's feeder series. Three are in the Cup Series: Bristol, Martinsville, and Richmond. Tracks with potential for future Cup races include Iowa Speedway (built in 2006), Nashville Fairgrounds Speedway (used until 1984), and Memphis Motorsports Park (hosted Busch Series races until the 2000s).

Short Track Tracks

  • Bristol Motor Speedway 0.533 miles
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Iowa Speedway 0.875 miles
    • --
  • Los Angeles Memorial Coliseum 0.25 miles
    • --
  • Lucas Oil Indianapolis Raceway Park 0.685 miles
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • Martinsville Speedway 0.526 miles
    • Backstretch : 800 feet
    • Frontstretch : 800 feet
  • North Wilkesboro Speedway 0.625 miles
    • --
  • Richmond Raceway 0.75 miles
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet

Accupredict Track Groupings

Large Oval Track

Charlotte Motor Speedway
Charlotte Motor Speedway

Concord, NC

  • Backstretch : 5-degrees
  • Backstretch : 1,360 feet
  • Frontstretch : 5-degrees
  • Frontstretch : 1,952.8 feet
  • Surface Asphalt
  • Turns 1 & 2 : 24-degrees
  • Turns 1 & 2 : 2,400 feet
  • Turns 1 & 2 Radius 685 feet
  • Turns 3 & 4 : 24-degrees
  • Turns 3 & 4 : 2,040 feet
  • Turns 3 & 4 Radius 625 feet

Large Oval

Large Oval Tracks include tracks that do not fit neatly into the traditional oval categories but share similarities with larger, more challenging circuits. These tracks offer a mix of speed and technical driving. When first developed, the Accupredict Tracks in this category included Atlanta (prior to the 2021 reconfiguration), California (Auto Club Speedway prior to its reconfiguration to a Short Track), Chicagoland (now defunct), Michigan, Las Vegas, Kansas, Kentucky (now defunct), and Texas. These tracks require a blend of strategic racing and high-speed performance.

Front and backstretches range from 5° to 12°.

Turns range from 17° to 24°.

Large Oval Track Group

  • Charlotte Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Kansas Speedway
    • Backstretch : 5.5-degrees
    • Frontstretch : 10-degrees
    • Turns 1 & 2 : 17- to 20-degrees variable banking
    • Turns 3 & 4 : 17- to 20-degrees variable banking
  • Michigan International Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 12-degrees
    • Turns 1 & 2 : 18-degrees
    • Turns 3 & 4 : 18-degrees
  • Texas Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 24-degrees
    • : on Dogleg 5-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Quad-oval Track

Charlotte Motor Speedway
Charlotte Motor Speedway

Concord, NC

Charlotte Motor Speedway

Quad-oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular in the 1960s and 1990s. It provides fans superior sightlines, allowing an angular perspective of cars approaching and moving away. This design eliminates the need for spectators to look back and forth, as required by traditional ovals, and provides more forward sight lines. However, modern tri-ovals are sometimes called "cookie cutters" due to their similar shapes and racing styles.

A quad-oval is a variation of the tri-oval, featuring a "double dogleg." It offers similar sightlines and layout, with the key difference being that the start-finish line falls on a straight section rather than along a curve. This shape has become a signature for Speedway Motorsports, which owns all major quad-ovals in the United States. The Calder Park Thunderdome in Melbourne, Australia, is also a quad-oval, though often referred to as a tri-oval since its opening in 1987. Rockingham Speedway is a unique case, as it can be interpreted as a D-oval, tri-oval, or quad-oval, with its asymmetrical front line featuring two faint kinks and the start-finish line next to the second kink.

Quad-oval Tracks

  • Charlotte Motor Speedway
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet

NASCAR 'Size' Groupings

Intermediate

Charlotte Motor Speedway
Charlotte Motor Speedway

Concord, NC

1.5 miles

  • Backstretch : 1,360 feet
  • Frontstretch : 1,952.8 feet
  • Turns 1 & 2 : 2,400 feet
  • Turns 3 & 4 : 2,040 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Steep Track

Dover Motor Speedway
Dover Motor Speedway

Dover, DE

  • Backstretch : 9-degrees
  • Backstretch : 1,076 feet
  • Frontstretch : 9-degrees
  • Frontstretch : 1,076 feet
  • Surface Concrete
  • Track Width 48 to 58 feet
  • Turns 1 & 2 : 24-degrees
  • Turns 3 & 4 : 24-degrees

Steep

Steep Tracks have significant banking, allowing for higher speeds and better grip in the turns. This banking helps cars maintain higher cornering speeds, making races on these tracks particularly thrilling. Notable steep tracks include Bristol, Dover, and Darlington. Drivers' success on steep tracks often hinges on their ability to handle high-speed turns and maintain control under intense conditions.

Front and backstretches range from 2° to 9°.

Turns range from 18° to 30°.

Steep Track Group

  • Bristol Motor Speedway
    • Backstretch : 4- to 9-degrees
    • Frontstretch : 4- to 9-degrees
    • Turns 1 & 2 : 24- to 30-degrees
    • Turns 3 & 4 : 24- to 30-degrees
  • Darlington Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 3-degrees
    • Turns 1 & 2 : 1/2- to 25-degrees
    • Turns 3 & 4 : 1/2- to 25-degrees
  • Dover Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Homestead Miami Speedway
    • Backstretch : 4-degrees
    • Frontstretch : 4-degrees
    • Turns 1 & 2 : 18 to 20-degrees
    • Turns 3 & 4 : 18 to 20-degrees
  • Las Vegas Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 20-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Stadium Oval Track

Dover Motor Speedway
Dover Motor Speedway

Dover, DE

Dover Motor Speedway

Stadium Oval

A typical oval track consists of two parallel straights connected by two 180° turns. Although most ovals have two radii curves, they are often labeled as four 90° turns. While many ovals follow a traditional symmetrical design, asymmetrical tracks are not uncommon.

A sub-classification of the traditional oval shape is the "stadium" oval. Unlike the paper clip oval, the straight sections are relatively short compared to the curves, making it closest in form to a circle. The curves usually have high banking, offering a unique challenge.

Stadium Oval Tracks

  • Bristol Motor Speedway
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Dover Motor Speedway
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • Homestead Miami Speedway
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Lucas Oil Indianapolis Raceway Park
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • New Hampshire Motor Speedway
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • North Wilkesboro Speedway
    • --

NASCAR 'Size' Groupings

Mile Oval

Dover Motor Speedway
Dover Motor Speedway

Dover, DE

1 miles

  • Backstretch : 1,076 feet
  • Frontstretch : 1,076 feet

Mile Oval

A 1-mile (1.61 km) oval is common in oval track racing. Exact measurements can vary slightly. Most are flat-banked, except for Dover.

Historically, many 1-mile dirt ovals were used by stock cars and champ cars until the early 1970s. These tracks often originated from harness racing and were called "Fairgrounds" tracks, like Arizona, California, and Michigan State Fairgrounds. The Milwaukee Mile, originally for horse racing, is the oldest oval race track.

Only three 1-mile tracks remain on the NASCAR calendar: Phoenix, Loudon, and Dover.

Mile Oval Tracks

  • Dover Motor Speedway 1 miles
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • New Hampshire Motor Speedway 1.058 miles
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • Phoenix Raceway 1.022 miles
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

Accupredict Track Groupings

Flat Track

Pocono Raceway
Pocono Raceway

Long Pond, PA

  • Back (Long Pond) Straightaway : 3,055 feet
  • Front (Main) Straightaway : 3,740 feet
  • Short (North) Straightaway : 1,780 feet
  • Track Width 60 to 100 feet
  • Turn 1 : 14-degrees
  • Turn 2 : 8-degrees
  • Turn 2 Radius 750 feet
  • Turn 3 : 6-degrees
  • Turn 3 Radius 800 feet
  • Turns 1 Radius 675 feet
  • Last Repave 2012
  • Surface Asphalt

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Rounded-off Triangle Track

Pocono Raceway
Pocono Raceway

Long Pond, PA

Pocono Raceway

Rounded-off Triangle

A typical oval track consists of two parallel straights connected by two 180° turns, usually labeled as four 90° turns. While many ovals follow this symmetrical design, asymmetrical tracks are not uncommon.

The "rounded-off triangle" is a rare layout in oval courses. Unlike traditional ovals, this shape features three distinct, widely varying turns. Pocono Raceway is the prime example, with its unique triangular design, often described as an oval that drives like a road course. This layout is popular outside the United States, offering a unique challenge compared to typical oval tracks.

Rounded-off Triangle Tracks

  • Pocono Raceway
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet

NASCAR 'Size' Groupings

Superspeedway

Pocono Raceway
Pocono Raceway

Long Pond, PA

2.5 miles

  • Back (Long Pond) Straightaway : 3,055 feet
  • Front (Main) Straightaway : 3,740 feet
  • Short (North) Straightaway : 1,780 feet

Superspeedway

A superspeedway is an oval track of 2 miles or longer. The most famous are Indianapolis Motor Speedway and Daytona International Speedway, both 2.5 miles. Built in 1909 and 1959, they host the Indianapolis 500, Brickyard 400, and Daytona 500.

Talladega Superspeedway, 2.66 miles, holds the fastest stock car speed record. Daytona and Talladega use restrictor plates to reduce speeds due to steep banking.

Other NASCAR superspeedways include Michigan International Speedway, Auto Club Speedway, and Pocono Raceway. Auto Club and Michigan are similar to intermediate tracks; Pocono and Indianapolis are long, flat tracks.

Superspeedway Tracks

  • Daytona International Speedway 2.5 miles
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Indianapolis Motor Speedway 2.5 miles
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet
  • Michigan International Speedway 2 miles
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Pocono Raceway 2.5 miles
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet
  • Talladega Superspeedway 2.66 miles
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet

Accupredict Track Groupings

Large Oval Track

Michigan International Speedway
Michigan International Speedway

Brooklyn, MI

  • Backstretch : 5-degrees
  • Backstretch : 2,242 feet
  • Frontstretch : 12-degrees
  • Frontstretch : 3,600 feet
  • Turns 1 & 2 : 18-degrees
  • Track Width Straightaways 45 feet wide with 12-foot apron
  • Track Width Turns 73 feet wide with 10-foot apron
  • Turns 3 & 4 : 18-degrees

Large Oval

Large Oval Tracks include tracks that do not fit neatly into the traditional oval categories but share similarities with larger, more challenging circuits. These tracks offer a mix of speed and technical driving. When first developed, the Accupredict Tracks in this category included Atlanta (prior to the 2021 reconfiguration), California (Auto Club Speedway prior to its reconfiguration to a Short Track), Chicagoland (now defunct), Michigan, Las Vegas, Kansas, Kentucky (now defunct), and Texas. These tracks require a blend of strategic racing and high-speed performance.

Front and backstretches range from 5° to 12°.

Turns range from 17° to 24°.

Large Oval Track Group

  • Charlotte Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Kansas Speedway
    • Backstretch : 5.5-degrees
    • Frontstretch : 10-degrees
    • Turns 1 & 2 : 17- to 20-degrees variable banking
    • Turns 3 & 4 : 17- to 20-degrees variable banking
  • Michigan International Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 12-degrees
    • Turns 1 & 2 : 18-degrees
    • Turns 3 & 4 : 18-degrees
  • Texas Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 24-degrees
    • : on Dogleg 5-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Michigan International Speedway
Michigan International Speedway

Brooklyn, MI

Michigan International Speedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Superspeedway

Michigan International Speedway
Michigan International Speedway

Brooklyn, MI

2 miles

  • Backstretch : 2,242 feet
  • Frontstretch : 3,600 feet

Superspeedway

A superspeedway is an oval track of 2 miles or longer. The most famous are Indianapolis Motor Speedway and Daytona International Speedway, both 2.5 miles. Built in 1909 and 1959, they host the Indianapolis 500, Brickyard 400, and Daytona 500.

Talladega Superspeedway, 2.66 miles, holds the fastest stock car speed record. Daytona and Talladega use restrictor plates to reduce speeds due to steep banking.

Other NASCAR superspeedways include Michigan International Speedway, Auto Club Speedway, and Pocono Raceway. Auto Club and Michigan are similar to intermediate tracks; Pocono and Indianapolis are long, flat tracks.

Superspeedway Tracks

  • Daytona International Speedway 2.5 miles
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Indianapolis Motor Speedway 2.5 miles
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet
  • Michigan International Speedway 2 miles
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Pocono Raceway 2.5 miles
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet
  • Talladega Superspeedway 2.66 miles
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet

Accupredict Track Groupings

Road Course Track

Sonoma Raceway
Sonoma Raceway

Sonoma, CA

  • Surface Asphalt
  • "The Carousel" Adds 0.395 miles making the course 2.385 miles
  • Turns 12

Road Course

Road Course Tracks are unique in NASCAR, incorporating both left and right turns, as well as elevation changes and technical sections. This diversity demands excellent car handling and driver skill. Prominent road courses include Watkins Glen and Sonoma. Road courses challenge drivers with a combination of speed, precision, and adaptability.

Road Course Track Group

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
    • : Virtually flat
  • Sonoma Raceway
  • Watkins Glen International
    • Turn : Ranges from 6- to 10-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Road Course Track

Sonoma Raceway
Sonoma Raceway

Sonoma, CA

Sonoma Raceway

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
  • Sonoma Raceway
  • Watkins Glen International
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

NASCAR 'Size' Groupings

Road Course

Sonoma Raceway
Sonoma Raceway

Sonoma, CA

1.99 miles

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course 2.28 miles
  • Circuit of The Americas 3.14 miles
  • Portland International Raceway 1.97 miles
  • Sonoma Raceway 1.99 miles
  • Watkins Glen International 2.428 miles
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

Accupredict Track Groupings

Flat Track

New Hampshire Motor Speedway
New Hampshire Motor Speedway

Loudon, NH

  • Backstretch : 2-degree
  • Backstretch : 1,500 feet
  • Frontstretch : 2-degree
  • Frontstretch : 1,500 feet
  • Track Width 65 feet
  • Turns 1 & 2 : 12-degrees
  • Surface Asphalt
  • Turns 3 & 4 : 12-degrees

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Stadium Oval Track

New Hampshire Motor Speedway
New Hampshire Motor Speedway

Loudon, NH

New Hampshire Motor Speedway

Stadium Oval

A typical oval track consists of two parallel straights connected by two 180° turns. Although most ovals have two radii curves, they are often labeled as four 90° turns. While many ovals follow a traditional symmetrical design, asymmetrical tracks are not uncommon.

A sub-classification of the traditional oval shape is the "stadium" oval. Unlike the paper clip oval, the straight sections are relatively short compared to the curves, making it closest in form to a circle. The curves usually have high banking, offering a unique challenge.

Stadium Oval Tracks

  • Bristol Motor Speedway
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Dover Motor Speedway
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • Homestead Miami Speedway
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Lucas Oil Indianapolis Raceway Park
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • New Hampshire Motor Speedway
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • North Wilkesboro Speedway
    • --

NASCAR 'Size' Groupings

Mile Oval

New Hampshire Motor Speedway
New Hampshire Motor Speedway

Loudon, NH

1.058 miles

  • Backstretch : 1,500 feet
  • Frontstretch : 1,500 feet

Mile Oval

A 1-mile (1.61 km) oval is common in oval track racing. Exact measurements can vary slightly. Most are flat-banked, except for Dover.

Historically, many 1-mile dirt ovals were used by stock cars and champ cars until the early 1970s. These tracks often originated from harness racing and were called "Fairgrounds" tracks, like Arizona, California, and Michigan State Fairgrounds. The Milwaukee Mile, originally for horse racing, is the oldest oval race track.

Only three 1-mile tracks remain on the NASCAR calendar: Phoenix, Loudon, and Dover.

Mile Oval Tracks

  • Dover Motor Speedway 1 miles
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • New Hampshire Motor Speedway 1.058 miles
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • Phoenix Raceway 1.022 miles
    • Backstretch : 1,551 feet
    • Frontstretch : 1,179 feet

Accupredict Track Groupings

Flat Track

Indianapolis Motor Speedway
Indianapolis Motor Speedway

Indianapolis, IN

  • Backstretch : 9-degrees
  • Backstretch : 3,300 feet
  • Frontstretch : 9-degrees
  • Frontstretch : 3,300 feet
  • Short Straightaways : 600 feet
  • Turns 1 & 2 : 9-degrees
  • Short Chute : 660 feet
  • Turns 3 & 4 : 9-degrees
  • Surface Asphalt

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Rounded-off Rectangle Track

Indianapolis Motor Speedway
Indianapolis Motor Speedway

Indianapolis, IN

Indianapolis Motor Speedway

Rounded-off Rectangle

A typical oval track consists of two parallel straights connected by two 180° turns, usually labeled as four 90° turns. While many ovals follow this symmetrical design, asymmetrical tracks are not uncommon.

The "rounded-off rectangle" is a unique but now uncommon track shape. It resembles a rectangle with two long straights, two short straights, and four separate turns. Unlike traditional ovals with two continuous 180° radii, this shape has four distinct 90° curves, featuring "short chutes" between turns one and two and between turns three and four.

Homestead-Miami Speedway was originally designed as a rounded-off rectangle and called a "mini-Indy." However, its 1.5-mile length and sharp corners made it noncompetitive, leading to a reconfiguration into a traditional oval. Indianapolis Motor Speedway remains the only major track with this layout. These tracks are avoided due to poor sight lines, slow corners, and dangerous impact angles, though they are used by private manufacturers' test tracks. The only major short track with a rectangular layout resembles a rounded-off square with nearly identical straights and turns.

Rounded-off Rectangle Tracks

  • Indianapolis Motor Speedway
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet

NASCAR 'Size' Groupings

Superspeedway

Indianapolis Motor Speedway
Indianapolis Motor Speedway

Indianapolis, IN

2.5 miles

  • Backstretch : 3,300 feet
  • Frontstretch : 3,300 feet
  • Short Straightaways : 600 feet
  • Short Chute : 660 feet

Superspeedway

A superspeedway is an oval track of 2 miles or longer. The most famous are Indianapolis Motor Speedway and Daytona International Speedway, both 2.5 miles. Built in 1909 and 1959, they host the Indianapolis 500, Brickyard 400, and Daytona 500.

Talladega Superspeedway, 2.66 miles, holds the fastest stock car speed record. Daytona and Talladega use restrictor plates to reduce speeds due to steep banking.

Other NASCAR superspeedways include Michigan International Speedway, Auto Club Speedway, and Pocono Raceway. Auto Club and Michigan are similar to intermediate tracks; Pocono and Indianapolis are long, flat tracks.

Superspeedway Tracks

  • Daytona International Speedway 2.5 miles
    • Backstretch : 3,000 feet
    • Frontstretch : 3,800 feet
  • Indianapolis Motor Speedway 2.5 miles
    • Backstretch : 3,300 feet
    • Frontstretch : 3,300 feet
    • Short Straightaways : 600 feet
    • Short Chute : 660 feet
  • Michigan International Speedway 2 miles
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Pocono Raceway 2.5 miles
    • Back (Long Pond) Straightaway : 3,055 feet
    • Front (Main) Straightaway : 3,740 feet
    • Short (North) Straightaway : 1,780 feet
  • Talladega Superspeedway 2.66 miles
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet

Accupredict Track Groupings

Road Course Track

Watkins Glen International
Watkins Glen International

Watkins Glen, NY

  • Turn : Ranges from 6- to 10-degrees
  • Backstretch : 2,600 feet
  • Track Width Ranges from 36 to 48 feet
  • Frontstretch : 2,150 feet
  • Surface Asphalt
  • Turns 7

Road Course

Road Course Tracks are unique in NASCAR, incorporating both left and right turns, as well as elevation changes and technical sections. This diversity demands excellent car handling and driver skill. Prominent road courses include Watkins Glen and Sonoma. Road courses challenge drivers with a combination of speed, precision, and adaptability.

Road Course Track Group

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
    • : Virtually flat
  • Sonoma Raceway
  • Watkins Glen International
    • Turn : Ranges from 6- to 10-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Road Course Track

Watkins Glen International
Watkins Glen International

Watkins Glen, NY

Watkins Glen International

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
  • Sonoma Raceway
  • Watkins Glen International
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

NASCAR 'Size' Groupings

Road Course

Watkins Glen International
Watkins Glen International

Watkins Glen, NY

2.428 miles

  • Backstretch : 2,600 feet
  • Frontstretch : 2,150 feet

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course 2.28 miles
  • Circuit of The Americas 3.14 miles
  • Portland International Raceway 1.97 miles
  • Sonoma Raceway 1.99 miles
  • Watkins Glen International 2.428 miles
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

Accupredict Track Groupings

Large Oval Track

Kansas Speedway
Kansas Speedway

Kansas City, KS

  • Backstretch : 5.5-degrees
  • Backstretch : 2,207 feet
  • Frontstretch : 10-degrees
  • Frontstretch : 2,721 feet
  • Turns 1 & 2 : 17- to 20-degrees variable banking
  • Turns 3 & 4 : 17- to 20-degrees variable banking

Large Oval

Large Oval Tracks include tracks that do not fit neatly into the traditional oval categories but share similarities with larger, more challenging circuits. These tracks offer a mix of speed and technical driving. When first developed, the Accupredict Tracks in this category included Atlanta (prior to the 2021 reconfiguration), California (Auto Club Speedway prior to its reconfiguration to a Short Track), Chicagoland (now defunct), Michigan, Las Vegas, Kansas, Kentucky (now defunct), and Texas. These tracks require a blend of strategic racing and high-speed performance.

Front and backstretches range from 5° to 12°.

Turns range from 17° to 24°.

Large Oval Track Group

  • Charlotte Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Kansas Speedway
    • Backstretch : 5.5-degrees
    • Frontstretch : 10-degrees
    • Turns 1 & 2 : 17- to 20-degrees variable banking
    • Turns 3 & 4 : 17- to 20-degrees variable banking
  • Michigan International Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 12-degrees
    • Turns 1 & 2 : 18-degrees
    • Turns 3 & 4 : 18-degrees
  • Texas Motor Speedway
    • Backstretch : 5-degrees
    • Frontstretch : 5-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 24-degrees
    • : on Dogleg 5-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Kansas Speedway
Kansas Speedway

Kansas City, KS

Kansas Speedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Intermediate

Kansas Speedway
Kansas Speedway

Kansas City, KS

1.5 miles

  • Backstretch : 2,207 feet
  • Frontstretch : 2,721 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Steep Track

Homestead Miami Speedway
Homestead Miami Speedway

Homestead, FL

  • Backstretch : 4-degrees
  • Backstretch : 1,760 feet
  • Frontstretch : 4-degrees
  • Frontstretch : 1,760 feet
  • Turns 1 & 2 : 18 to 20-degrees
  • Turns 3 & 4 : 18 to 20-degrees
  • Track Width 55 feet

Steep

Steep Tracks have significant banking, allowing for higher speeds and better grip in the turns. This banking helps cars maintain higher cornering speeds, making races on these tracks particularly thrilling. Notable steep tracks include Bristol, Dover, and Darlington. Drivers' success on steep tracks often hinges on their ability to handle high-speed turns and maintain control under intense conditions.

Front and backstretches range from 2° to 9°.

Turns range from 18° to 30°.

Steep Track Group

  • Bristol Motor Speedway
    • Backstretch : 4- to 9-degrees
    • Frontstretch : 4- to 9-degrees
    • Turns 1 & 2 : 24- to 30-degrees
    • Turns 3 & 4 : 24- to 30-degrees
  • Darlington Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 3-degrees
    • Turns 1 & 2 : 1/2- to 25-degrees
    • Turns 3 & 4 : 1/2- to 25-degrees
  • Dover Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 24-degrees
    • Turns 3 & 4 : 24-degrees
  • Homestead Miami Speedway
    • Backstretch : 4-degrees
    • Frontstretch : 4-degrees
    • Turns 1 & 2 : 18 to 20-degrees
    • Turns 3 & 4 : 18 to 20-degrees
  • Las Vegas Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 20-degrees
    • Turns 3 & 4 : 20-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Stadium Oval Track

Homestead Miami Speedway
Homestead Miami Speedway

Homestead, FL

Homestead Miami Speedway

Stadium Oval

A typical oval track consists of two parallel straights connected by two 180° turns. Although most ovals have two radii curves, they are often labeled as four 90° turns. While many ovals follow a traditional symmetrical design, asymmetrical tracks are not uncommon.

A sub-classification of the traditional oval shape is the "stadium" oval. Unlike the paper clip oval, the straight sections are relatively short compared to the curves, making it closest in form to a circle. The curves usually have high banking, offering a unique challenge.

Stadium Oval Tracks

  • Bristol Motor Speedway
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Dover Motor Speedway
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • Homestead Miami Speedway
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Lucas Oil Indianapolis Raceway Park
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • New Hampshire Motor Speedway
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • North Wilkesboro Speedway
    • --

NASCAR 'Size' Groupings

Intermediate

Homestead Miami Speedway
Homestead Miami Speedway

Homestead, FL

1.5 miles

  • Backstretch : 1,760 feet
  • Frontstretch : 1,760 feet

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Flat Track

North Wilkesboro Speedway

North Wilkesboro, NC

  • --

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Stadium Oval Track

North Wilkesboro Speedway

North Wilkesboro, NC

North Wilkesboro Speedway

Stadium Oval

A typical oval track consists of two parallel straights connected by two 180° turns. Although most ovals have two radii curves, they are often labeled as four 90° turns. While many ovals follow a traditional symmetrical design, asymmetrical tracks are not uncommon.

A sub-classification of the traditional oval shape is the "stadium" oval. Unlike the paper clip oval, the straight sections are relatively short compared to the curves, making it closest in form to a circle. The curves usually have high banking, offering a unique challenge.

Stadium Oval Tracks

  • Bristol Motor Speedway
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Dover Motor Speedway
    • Backstretch : 1,076 feet
    • Frontstretch : 1,076 feet
  • Homestead Miami Speedway
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Lucas Oil Indianapolis Raceway Park
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • New Hampshire Motor Speedway
    • Backstretch : 1,500 feet
    • Frontstretch : 1,500 feet
  • North Wilkesboro Speedway
    • --

NASCAR 'Size' Groupings

Short Track

North Wilkesboro Speedway

North Wilkesboro, NC

0.625 miles

  • --

Short Track

A short track is an oval less than one mile (1.6 km), often 0.5 miles (0.8 km) or shorter. Drivers usually start their careers on these tracks, nicknamed "bullrings" for their short length and fast action. Professional NASCAR races on short tracks often cover 500 or 400 laps. Many have lights for night races.

Short tracks are crucial for NASCAR's feeder series. Three are in the Cup Series: Bristol, Martinsville, and Richmond. Tracks with potential for future Cup races include Iowa Speedway (built in 2006), Nashville Fairgrounds Speedway (used until 1984), and Memphis Motorsports Park (hosted Busch Series races until the 2000s).

Short Track Tracks

  • Bristol Motor Speedway 0.533 miles
    • Backstretch : 650 feet
    • Frontstretch : 650 feet
    • Turns 1 & 2 : 588 feet
    • Turns 3 & 4 : 588 feet
  • Iowa Speedway 0.875 miles
    • --
  • Los Angeles Memorial Coliseum 0.25 miles
    • --
  • Lucas Oil Indianapolis Raceway Park 0.685 miles
    • Frontstretch : 699-feet
    • Backstretch : 699-feet
  • Martinsville Speedway 0.526 miles
    • Backstretch : 800 feet
    • Frontstretch : 800 feet
  • North Wilkesboro Speedway 0.625 miles
    • --
  • Richmond Raceway 0.75 miles
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet

Accupredict Track Groupings

Road Course Track

Charlotte Motor Speedway Road Course
Charlotte Motor Speedway Road Course

Concord, NC

  • Turns 17

Road Course

Road Course Tracks are unique in NASCAR, incorporating both left and right turns, as well as elevation changes and technical sections. This diversity demands excellent car handling and driver skill. Prominent road courses include Watkins Glen and Sonoma. Road courses challenge drivers with a combination of speed, precision, and adaptability.

Road Course Track Group

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
    • : Virtually flat
  • Sonoma Raceway
  • Watkins Glen International
    • Turn : Ranges from 6- to 10-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Road Course Track

Charlotte Motor Speedway Road Course
Charlotte Motor Speedway Road Course

Concord, NC

Charlotte Motor Speedway Road Course

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
  • Sonoma Raceway
  • Watkins Glen International
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

NASCAR 'Size' Groupings

Road Course

Charlotte Motor Speedway Road Course
Charlotte Motor Speedway Road Course

Concord, NC

2.28 miles

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course 2.28 miles
  • Circuit of The Americas 3.14 miles
  • Portland International Raceway 1.97 miles
  • Sonoma Raceway 1.99 miles
  • Watkins Glen International 2.428 miles
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

Accupredict Track Groupings

Road Course Track

Circuit of The Americas
Circuit of The Americas

Austin, Texas

  • Turns 20
  • Surface Asphalt

Road Course

Road Course Tracks are unique in NASCAR, incorporating both left and right turns, as well as elevation changes and technical sections. This diversity demands excellent car handling and driver skill. Prominent road courses include Watkins Glen and Sonoma. Road courses challenge drivers with a combination of speed, precision, and adaptability.

Road Course Track Group

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
    • : Virtually flat
  • Sonoma Raceway
  • Watkins Glen International
    • Turn : Ranges from 6- to 10-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

Road Course Track

Circuit of The Americas
Circuit of The Americas

Austin, Texas

Circuit of The Americas

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course
  • Chicago Street Race
    • --
  • Circuit of The Americas
  • Portland International Raceway
  • Sonoma Raceway
  • Watkins Glen International
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

NASCAR 'Size' Groupings

Road Course

Circuit of The Americas
Circuit of The Americas

Austin, Texas

3.14 miles

Road Course

NASCAR road course tracks are unique, as they incorporate both left and right turns, unlike the traditional oval tracks. These tracks typically range from 2 to 4 miles (3.2 to 6.4 km) in length. Early in NASCAR history, road courses were less common, but they have gained popularity over the years.

Notable NASCAR road courses include Watkins Glen International, Sonoma Raceway, and the Charlotte Motor Speedway Roval. Watkins Glen and Sonoma have been mainstays in the NASCAR calendar, providing challenging layouts with elevation changes and technical turns. The Charlotte Roval, introduced in 2018, combines elements of the traditional oval with an infield road course, offering a unique hybrid experience.

Road courses require a different skill set, emphasizing braking, handling, and precision. These tracks add variety to the NASCAR schedule, challenging drivers with diverse racing conditions. Road course races often feature strategic pit stops and tire management, making them exciting and unpredictable events in the NASCAR season.

Road Course Tracks

  • Charlotte Motor Speedway Road Course 2.28 miles
  • Circuit of The Americas 3.14 miles
  • Portland International Raceway 1.97 miles
  • Sonoma Raceway 1.99 miles
  • Watkins Glen International 2.428 miles
    • Backstretch : 2,600 feet
    • Frontstretch : 2,150 feet

Accupredict Track Groupings

Flat Track

Nashville Superspeedway
Nashville Superspeedway

Lebanon, TN

  • Turns 1 & 2 : 14-degrees
  • Turns 3 & 4 : 14-degrees
  • Surface Concrete
  • Frontstretch : 9-degrees
  • Backstretch : 6-degrees

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • Nashville Superspeedway
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
    • Frontstretch : 9-degrees
    • Backstretch : 6-degrees
  • New Hampshire Motor Speedway
    • Backstretch : 2-degree
    • Frontstretch : 2-degree
    • Turns 1 & 2 : 12-degrees
    • Turns 3 & 4 : 12-degrees
  • North Wilkesboro Speedway
    • --
  • Phoenix Raceway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees
  • Pocono Raceway
    • Turn 1 : 14-degrees
    • Turn 2 : 8-degrees
    • Turn 3 : 6-degrees
  • Richmond Raceway
    • Backstretch : 2-degrees
    • Frontstretch : 8-degrees
    • Turns 1 & 2 : 14-degrees
    • Turns 3 & 4 : 14-degrees
  • World Wide Technology Raceway
    • Turns 1 & 2 : 11-degrees
    • Turns 3 & 4 : 9-degrees

This grouping of tracks show a strong correlation on key metrics in driver finishes and is used in my Accupredict Driver Odds and Finish Projections.

NASCAR 'Shape' Groupings

D-Shaped Oval Track

Nashville Superspeedway
Nashville Superspeedway

Lebanon, TN

Nashville Superspeedway

D-Shaped Oval

The tri-oval shape, conceived by Bill France, Sr. during the planning of Daytona, became popular during the construction booms of the 1960s and 1990s. It provided fans with superior sightlines, allowing an angular perspective of cars approaching and moving away, unlike traditional ovals that required fans to look back and forth like a tennis match. The tri-oval shape prevents the need to "lean" to see oncoming cars and creates more forward sight lines. However, modern tri-ovals are often called "cookie cutters" due to their nearly identical shapes and racing styles.

A variation of the tri-oval is the "D-shaped oval." Similar to a tri-oval, a D-shaped oval has a straight backstretch but features a long, sweeping frontstretch, giving it a layout resembling the letter D. This shape originated with Michigan International Speedway and Texas World Speedway, built in the 1960s. Initially used for superspeedways, this design now appears in some short tracks as well. For instance, Richmond Raceway was rebuilt in 1986 from a 0.542 mi stadium oval to a 0.750 mi D-shaped oval. The Iowa Speedway, explicitly designed as a D-oval, opened in 2006 and is another famous example of this layout.

D-Shaped Oval Tracks

  • Atlanta Motor Speedway
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Iowa Speedway
    • --
  • Kansas Speedway
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Michigan International Speedway
    • Backstretch : 2,242 feet
    • Frontstretch : 3,600 feet
  • Nashville Superspeedway
  • Richmond Raceway
    • Backstretch : 860 feet
    • Frontstretch : 1,290 feet
  • Talladega Superspeedway
    • Backstretch : 4,000 feet
    • Frontstretch : 4,300 feet
    • Turns 1 & 2 : 3,750 feet
    • Turns 3 & 4 : 3,750 feet
  • Texas Motor Speedway
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet

NASCAR 'Size' Groupings

Intermediate

Nashville Superspeedway
Nashville Superspeedway

Lebanon, TN

1.333 miles

Intermediate

These courses are 1 to 2 miles (1.6 to 3.2 km) long, particularly 1.5 miles (2.4 km). Early in NASCAR history, this size was rare. By 1990, only five existed. Two - Marchbanks Speedway (1.4 miles) and Trenton Speedway (1.5 miles) - were demolished, leaving Charlotte Motor Speedway, Atlanta Motor Speedway, and Darlington Raceway. Most others were built after 1994, often called "cookie cutter" tracks due to perceived similarities.

In 1992, Charlotte added lights for night racing, now common at these tracks. Intermediate tracks typically have moderate to steep banking. Most modern tracks used in NASCAR balance high speeds with good sightlines, especially 1.5-mile tri- and quad-ovals.

Intermediate tracks were designed for stock cars. They remain a key part of the NASCAR racing calendar.

Intermediate Tracks

  • Atlanta Motor Speedway 1.54 miles
    • Backstretch : 1,800 feet
    • Frontstretch : 2,332 feet
  • Charlotte Motor Speedway 1.5 miles
    • Backstretch : 1,360 feet
    • Frontstretch : 1,952.8 feet
    • Turns 1 & 2 : 2,400 feet
    • Turns 3 & 4 : 2,040 feet
  • Darlington Raceway 1.366 miles
    • Backstretch : 1,29 feet
    • Frontstretch : 1,229 feet
  • Homestead Miami Speedway 1.5 miles
    • Backstretch : 1,760 feet
    • Frontstretch : 1,760 feet
  • Kansas Speedway 1.5 miles
    • Backstretch : 2,207 feet
    • Frontstretch : 2,721 feet
  • Las Vegas Motor Speedway 1.5 miles
    • Backstretch : 1,572 feet
    • Frontstretch : 2,275 feet
  • Nashville Superspeedway 1.333 miles
  • Texas Motor Speedway 1.5 miles
    • Backstretch : 1,330 feet
    • Frontstretch : 2,250 feet
  • World Wide Technology Raceway 1.25 miles
    • Frontstretch : 1,922-feet
    • Backstretch : 1,976 ft-feet

Accupredict Track Groupings

Flat Track

Iowa Speedway
Iowa Speedway

Newton, IA

  • --

Flat

Flat Tracks feature minimal banking, making them unique in NASCAR. These tracks require drivers to rely more on skill and precision rather than speed. Key examples include Martinsville, New Hampshire, Phoenix, and Richmond. Performance on flat tracks is typically influenced by a driver's ability to handle tight turns and maintain consistent lap times.

Front and backstretches range from 0° to 9°.

Turns range from 7.5° to 14°.

Flat Track Group

  • Indianapolis Motor Speedway
    • Backstretch : 9-degrees
    • Frontstretch : 9-degrees
    • Turns 1 & 2 : 9-degrees
    • Turns 3 & 4 : 9-degrees
  • Iowa Speedway
    • --
  • Los Angeles Memorial Coliseum
    • --
  • Lucas Oil Indianapolis Raceway Park
    • Turns 1 & 2 : 7.5-degrees
    • Turns 3 & 4 : 7.5-degrees
    • Frontstretch : 2-degrees
    • Backstretch : 2-degrees
  • Martinsville Speedway
    • Backstretch : 0-degrees (flat)
    • Frontstretch : 0-degrees (flat)