Matt Crafton was fastest in the first practice session for the Camping World Truck Series at Martinsville Speedway.
The No. 88 Chevrolet posted the top speed of 94.073 mph around the half-mile track.
Crafton was followed by Christopher Bell (93.775), Todd Gilliland (93.752), Johnny Sauter (93.687) and Ben Rhodes (93.576).
Jeffrey Abbey, who was 24th fastest, recorded the most laps with 52.
Chase Briscoe had the best 10-lap average at 92.770 mph. Harrison Burton had the second-best average at 91.880 mph.
The final Truck Series practice is set to run from 3-3:55 p.m. ET this afternoon on Fox Sports 1.