Harrison Burton was the fastest in Saturday’s final Camping World Truck Series practice at Iowa Speedway.
Burton also had the best average over 10 consecutive laps at 130.603 mph.
Justin Haley led the way in the first of two Camping World Truck Series practices Saturday at Iowa Speedway.
Haley posted a lap of 134.294 mph. He was followed by Cody Coughlin (134.248 mph), Brett Moffitt (133.554), Dalton Sargeant (133.469) and Todd Gilliland (133.328). Stewart Friesen had the best average over 10 consecutive laps at 130.333 mph.
The Truck Series has a second practice and qualifying before its race at 7 p.m. ET today.