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 this post throughout Sunday's event as ...
The NASCAR Cup Series was back at Iowa Speedway on Sunday for the second straight year, and William Byron had just enough fuel to win the Iowa Corn 350 Powered by Ethanol. Bryon had to conserve his ...
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