About Us

The I-35 Speedway is a 1/2 mile dirt track located at the North Iowa Fairgrounds in Mason City, IA.

Track Promoters:
Joe Ringsdorf
P.O. Box 659
Algona, IA 50511

Race Promotions: 515-320-0066

Track Phone: 641-424-6515

Tech Inspectors:
Tim Weiland  641-843-4230
Tim Sidles