2025 Iowa Corn 350

2025 Iowa Corn 350 powered by Ethanol

Race details[1][2][3][4][5][6]
Race 23 of 36 in the 2025 NASCAR Cup Series
Date	August 3, 2025 (2025-08-03)
Location	Iowa Speedway in Newton, Iowa
Course	Permanent racing facility
Course length	0.875 miles (1.408 km)
Distance	350 laps, 306.25 mi (492.862 km)
Average speed	92.905 miles per hour (149.516 km/h)
Pole position
Driver	Chase Briscoe	Joe Gibbs Racing
Time	23.004
Most laps led
Driver	William Byron	Hendrick Motorsports
Laps	140
Fastest lap
Driver	Brad Keselowski	RFK Racing
Time	23.748
Winner
No. 24	William Byron	Hendrick Motorsports
Television in the United States
Network	USA
Announcers	Leigh Diffey, Jeff Burton and Steve Letarte
Nielsen ratings	2.2 million
Radio in the United States
Radio	MRN
Booth announcers	Alex Hayden and Mike Bagley
Turn announcers	Dave Moody (1 & 2) and Kurt Becker (3 & 4)

The 2025 Iowa Corn 350 was an NASCAR Cup Series race held on August 3, 2025, at Iowa Speedway in Newton, Iowa. Contested over 350 laps on the 0.875-mile (1.408 km) D-shaped oval, it was the 23rd race of the 2025 NASCAR Cup Series season.

William Byron won the race. Chase Briscoe finished 2nd, and Brad Keselowski finished 3rd. Ryan Blaney and Ryan Preece rounded out the top five, and Bubba Wallace, Alex Bowman, Carson Hocevar, Joey Logano, and Austin Dillon rounded out the top ten.

Iowa Speedway is a 7/8-mile (1.4 km) paved oval motor racing track in Newton, Iowa, United States, approximately 30 miles (48 km) east of Des Moines. The track was designed with influence from Rusty Wallace and patterned after Richmond Raceway, a short track where Wallace was very successful. It has over 25,000 permanent seats as well as a unique multi-tiered Recreational Vehicle viewing area along the backstretch. The track hosts the NTT IndyCar Series and NASCAR events.

After the 2020 race was canceled due to the pandemic, the race was removed from the 2021 schedule.^[7][8][9] In 2024, it was announced that the Xfinity Series would return to Iowa with a Cup Series race.^[10][11]

• (R) denotes rookie driver.
• (i) denotes driver who is ineligible for series driver points.

Christopher Bell was the fastest in the practice session with a time of 23.511 seconds and a speed of 133.979 mph (215.618 km/h).

Chase Briscoe scored the pole for the race with a time 23.004 of and a speed of 136.933 mph (220.372 km/h).^[12]

Stage One Laps: 70

Stage Two Laps: 140

Stage Three Laps: 140

• Lead changes: 10 among 6 different drivers
• Cautions/Laps: 12 for 72
• Red flags: 0
• Time of race: 3 hours, 17 minutes, and 47 seconds
• Average speed: 92.905 miles per hour (149.516 km/h)

USA covered the race on the television side. Leigh Diffey, Jeff Burton, and Steve Letarte called the race from the broadcast booth. Dave Burns and Kim Coon handled the pit road duties from pit lane.

Radio coverage of the race was broadcast by Motor Racing Network (MRN) and was also simulcast on Sirius XM NASCAR Radio.

Drivers' Championship standings Pos Driver Points 1 1 William Byron 770 1 2 Chase Elliott 752 (–18) 3 Kyle Larson 725 (–45) 4 Denny Hamlin 719 (–51) 5 Christopher Bell 684 (–86) 6 Tyler Reddick 673 (–97) 7 Ryan Blaney 665 (–105) 8 Chase Briscoe 640 (–130) 9 Alex Bowman 614 (–156) 1 10 Bubba Wallace 581 (–189) 1 11 Chris Buescher 574 (–196) 12 Joey Logano 560 (–210) 1 13 Ryan Preece 551 (–219) 1 14 Ross Chastain 544 (–226) 15 Kyle Busch 501 (–269) 16 Ty Gibbs 487 (–283) Official driver's standings

Manufacturers' Championship standings Pos Manufacturer Points 1 Chevrolet 845 2 Toyota 826 (–19) 3 Ford 764 (–81) Note: Only the first 16 positions are included for the driver standings. . – Driver has clinched a position in the NASCAR Cup Series playoffs.