The annual event at the Iowa Speedway has room for more than 30,000 fans but less than 6,000 tickets were sold for the 2025 INDYCAR race.

IndyCar had average audiences over 1 million after the Indy 500, but the last four races haven't come close to that. Here's the latest.

Fans of the IndyCar races at Iowa Speedway are worried about its future after a smaller crowd attended the event this year.