Martin Truex Jr has the fastest practice speed during practice 1 of 124.178 mph for the 2017 NASCAR Cup Series Toyota Owners 400 at Richmond International Raceway.
The practice speeds table shows the fastest lap during practices.
|Driver||From Lap||To Lap||Average Speed|
|Ricky Stenhouse Jr||3||12||119.082|
Cars must run 10 consecutive laps on the track to be included in this table.