NASCAR Camping World Truck Series at Knoxville Raceway

Clean Harbors 150
NASCAR Camping World Truck Series
VenueKnoxville Raceway
LocationKnoxville, Iowa
Corporate sponsorClean Harbors
First race2021
Last race2022
Distance75 miles (121 km)
Laps150
Stage 1: 40
Stage 2: 50
Final stage: 60
Previous namesCorn Belt 150 presented by Premier Chevy Dealers (2021)
Circuit information
SurfaceDirt
Length.5 mi (0.80 km)
Turns4

The Clean Harbors 150 was a NASCAR Camping World Truck Series racing event at Knoxville Raceway in Iowa. The inaugural running of the race was on July 9, 2021, the first NASCAR national touring event held at Knoxville Raceway, and was sponsored by Chevrolet. The second and final race was in June 2022 and was sponsored by Clean Harbors.