William Byron wins Iowa Corn 350 by executing a careful fuel-saving strategy and withstanding pressure from Chase Briscoe at Iowa Speedway on Sunday, August 3. Byron, the reigning Daytona 500 champion, secured his second NASCAR Cup Series victory of the 2025 season with this dramatic win.
Byron Battles Fuel Pressure and Late-Race Cautions
The Iowa Corn 350 tested Byron’s ability to balance speed and caution in the closing laps, as a series of yellow flags shook up team strategies across the field. Despite various approaches to pit stops and fuel management, neither Chase Briscoe nor Brad Keselowski managed to overtake Byron during the intense final green-flag run. After navigating the closing laps under threat, Byron crossed the finish line first, adding another major win to his 2025 campaign.
Reflecting on his hard-fought success, Byron shared his thoughts on fuel management and team effort.
“How about that for some fuel mileage,”
he told USA Network.
“We’ve had our fair share of things not go our way with fuel mileage. Super thankful for Rudy and all these guys.”
—William Byron, Driver
Key Moments and Race Developments
Several caution periods shaped the direction of the race, with a total of twelve yellow flags flying throughout the afternoon. Shane van Gisbergen triggered the first yellow for cause on lap 170 after spinning into the wall in turn 1. Lap 204 saw Todd Gilliland make contact with Ty Dillon, sending Dillon into the outside wall in turn 2. Denny Hamlin spun on lap 220 while battling on the inside of AJ Allmendinger. Zane Smith found trouble on lap 229, hitting the wall hard in turn 1 following contact with Carson Hocevar. On lap 243, Briscoe made contact with Erik Jones, spinning him on the frontstretch, and with 53 laps to go, Christopher Bell and Tyler Reddick spun in turn 2 after Briscoe’s involvement. Another debris caution arrived with 69 laps remaining, compounding the race’s strategic complexity.
Throughout these developments, Brad Keselowski demonstrated strong pace, leading 68 laps and collecting wins in both stages one and two. Despite Keselowski’s speed and the multiple restarts, Byron managed his resources to perfection to maintain his advantage at the finish.
Finishing Order and Next Series Race
Chase Briscoe claimed second place, followed by Brad Keselowski, Ryan Blaney, Ryan Preece, Bubba Wallace, Alex Bowman, Carson Hocevar, Joey Logano, and Austin Dillon rounding out the top ten finishers. Key names such as Christopher Bell and Tyler Reddick were caught up in late-race incidents as the field battled for critical points.
The NASCAR Cup Series, and competitors including William Byron, will now look ahead to the next event at Watkins Glen, set for August 10. The race is scheduled to begin at 3 p.m. Eastern on USA Network, promising another action-filled contest for fans and teams alike.
This latest Iowa victory strengthens Byron’s position as a championship contender in the ongoing campaign, while adding urgency to rival teams hoping to disrupt his momentum in the weeks ahead.
