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William Byron Wins Iowa Corn 350 With Fuel-Saving Masterclass to Lead Regular Season

Stretching his final tank 144 laps under 12 caution flags created a fuel-mileage masterclass that vaulted Byron 18 points clear atop the regular-season standings.

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Photo by Ron Olds for SpeedwayMedia.com
Ryan Blaney wins the inaugural Iowa Corn 350 at Iowa Speedway on June 16, 2024.
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Overview

  • Byron ran the last 144 of 350 laps without pitting and led a race-high 141 circuits to secure his second win of 2025.
  • Twelve caution flags in the final stage allowed teams to split fuel strategies and reshaped pit-stop timing.
  • Brad Keselowski won both opening stages and led 68 laps before slipping to third after stretching his pit window.
  • Byron’s victory gives him a commanding 18-point lead over Chase Elliott, with 13 of 16 playoff berths locked and three spots still up for grabs.
  • The Cup Series now heads to Watkins Glen on August 10, where contenders will vie for the remaining playoff positions.