Welcome to the Racing America On SI Live Race Updates page for the 2025 NASCAR Cup Series Iowa Corn 350 Powered by Ethanol at Iowa Speedway. Be sure to refresh ...

William Byron used a flurry of cautions to stretch his fuel over the final 140 laps to win Sunday's NASCAR Cup Series race at Iowa Speedway.

William Byron utilized fuel strategy to claim his second NASCAR Cup Series win of the season at Iowa Speedway Sunday evening.

The third time was the charm on Sunday for William Byron. After running out of fuel at both Michigan (while leading) and ...

William Byron admitted he was nervous as he headed into the final laps of the NASCAR Cup Series race Sunday at Iowa Speedway.

Ryan Preece leaves Iowa Speedway as the biggest beneficiary of points, now just 23 back of the final transfer into the ...

William Byron took his second win of the 2025 NASCAR Cup Series season in dramatic fashion as he was running on fumes in the closing laps of Sunday's Iowa Corn ...

The Zane Smith Iowa Speedway incident escalated after a heated crash late in the Iowa Corn 350, when a crew member from Smith ...