William Byron fought off fuel worries in the closing laps to win the NASCAR Cup Series race Sunday at Iowa Speedway.

NASCAR Cup Series drivers and officials are optimistic the series will return to Iowa Speedway for years to come.

Follow along for live updates and highlights from the second NASCAR Cup Series race at Iowa Speedway, the Iowa Corn 350, today.

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’s Iowa Corn 350 victory gave him the distinction of being the only driver to have won at Iowa Speedway in all ...

NEWTON, Iowa — A look at the winners and losers from Sunday’s Cup race at Iowa Speedway.

NEWTON, Iowa — Sunday's Iowa Corn 350 capped off a three-race weekend for NASCAR fans at Iowa Speedway. 30,000 from near and ...

Listen to the best soundbites during the NASCAR Cup Series Iowa Corn 350 at Iowa Speedway.

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.

The NASCAR Cup Series has raced only twice at Iowa Speedway: last year was its debut and then Sunday, when William Byron ...

Mike Forde, NASCAR’s managing director of racing communications, is not sure if the governing body will return to Iowa ...