56,000 are expected at the NASCAR Nationwide Series Aug. 4 at Iowa Speedway in Newton.

20,000 are expected at the NASCAR K&N Pro Series Aug. 3 at Iowa Speedway in Newton.

12,000 are expected at the 22nd Annual Arnold Motor Supply 360 Aug. 2-3 at Knoxville Speedway in Knoxville.

Click here for more events, courtesy of the Greater Des Moines Convention and Visitors Bureau.