Kyle Busch has the fastest practice speed during practice 1 of 172.695 mph for the 2017 NASCAR Cup Series Ford EcoBoost 400 at Homestead-Miami Speedway.
The practice speeds table shows the fastest lap during practices.
|Driver||From Lap||To Lap||Average Speed|
|Ricky Stenhouse Jr||1||10||163.402|
Cars must run 10 consecutive laps on the track to be included in this table.