Iowa Corn 350

Prior to 2024, NASCAR's lower two series, the NASCAR Xfinity Series and the NASCAR Craftsman Truck Series, had races held at the track from 2009 (Trucks)/2011 (Xfinity) until 2019;^[6][7] the races were removed from both series' 2020 calendars as a result of the COVID-19 pandemic-induced realignment, and did not return for either series' 2021 calendar.^[8] Initially, there were no plans of hosting the Cup Series at the track, due to lack of room in the schedule;^[9] following a management change in 2018, expansion plans were drawn up in order to make the track as part of the Cup Series calendar.^[10]

When Iowa Speedway finally became part of the Cup calendar in 2024, it replaced the Pala Casino 400 due to planned construction at the Auto Club Speedway.^[11] It was a late decision to race at Iowa Speedway as NASCAR were in discussions to race at Montreal, but no deal was made in time.^[12] The Xfinity Series also returned to the track with the Hy-Vee PERKS 250, although the Truck Series did not.