The final Camping World Truck Series practice at Iowa Speedway was led by rookie Christopher Bell.
Bell put up a speed of 135.292 mph in the session as he recorded 35 laps around the short track.
The top five was filled out by Cameron Hayley, Ben Kennedy, Kaz Grala and Tyler Reddick.
John Hunter Nemechek had the best 10-lap average at 131.415 mph.
The first session was led by Ben Rhodes. The ThorSport Racing rookie was 19th fastest in the second session.
Speed chart
