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.

Fans of the Sukup INDYCAR race at Iowa Speedway are worried about its future after a smaller crowd attended the event this ...

NEWTON, Iowa — Things are quiet again at the Iowa speedway just a day after IndyCar made its annual pit stop in Newton.