The significant change for the NTT IndyCar Series in the 2025 season was the move to Network FOX for the entire season. The result? A massive win for the series. It was the most-watched season for the series in 17 years, and up 27% from 2024.

Here are the average TV numbers for all 17 races from the 2025 NTT IndyCar Series season.

• Long Beach – 552,000
• Saturday Iowa – 576,000
• Thermal – 704,000
• Portland – 708,000
• Indy GP – 710,000
• Sunday Iowa – 719,000
• Leguna Seca – 734,000
• Toronto – 734,000
• Mid-Ohio – 775,000
• Milwaukee – 779,000
• Road America – 781,000
• Barber – 914,000
• Gateway – 1,012,000
• Detroit – 1,061,000
• Nashville – 1,142,000
• St. Pete – 1,417,000
• Indianapolis 500 – 7,050,000

Image Credit: Julian Wayne/ Seriously Fast Media