NASCAR TV viewership numbers for Iowa Speedway
On Sunday, the NASCAR Cup Series races at Iowa Speedway. This was only the second-ever NCS race at the track in Newton, Iowa.
View NASCAR TV numbers from Iowa Speedway below.
William Byron drove to victory lane. He claimed his second win of the 2025 season.
The race broadcast via USA brought in 2.2M viewers on average per a release from NBC Sports PR. It was the most-watched sporting event of the weekend.
Last year, the NASCAR Cup Series made their debut at the track. 2.6M tuned in on average for the July 2024 event.
Iowa Results: August 3, 2025 (NASCAR Cup Series)
Iowa Speedway
TV Ratings
Date | Avg Viewers | Network
August 3, 2025
Viewers: 2.2M
Network: USA
June 16, 2025
Viewers: 2.693M
Network: USA
This weekend, NASCAR heads to Watkins Glen International in New York.
Links
Iowa Speedway | NASCAR