USA Network earned a 1.10 rating and 1.929 million viewers for Sunday’s NASCAR Cup Series Iowa Corn 350, according to Adam Stern of Sports Business Journal.
The race was down 7% in rating and 11% in viewership from last year. The 2025 race averaged 2.174 million viewers on USA Network.
.@USANetwork got a 1.10 rating and 1.929 million viewers for Sunday's NASCAR Cup Iowa Corn 350, down 7 and 11% from last year respectively. pic.twitter.com/H29ZirEZe9
— Adam Stern (@A_S12) August 12, 2026