Mississippi Thunder Speedway
Driving Directions: Three miles north of Fountain City on SR 35.
Latest Headlines
AERO Race Wheels rolls back into USMTS for 2026
The United States Modified Touring Series is proud to welcome back Aero Race Wheels as a contingency sponsor for the 2026 season. Aero Race Wheels will once again reward the driver r…
Brinn Steps Up for the Grinders as USMTS Adds New 2026 Partner
The United States Modified Touring Series (USMTS) is proud to welcome Brinn Incorporated as a brand-new marketing partner for the 2026 season. As part of the partnership, Brinn Incor…
Callies returns to honor USMTS engine builders
The United States Modified Touring Series is proud to announce that Callies Performance Products has renewed its commitment as one of the Engine Builders of the Year sponsors for the 20…
FK Rod Ends Returns as USMTS Hard Charger Title Sponsor
FK Rod Ends continues to step up in a big way for the 2026 season by putting $100 CASH on the line after every A-Main to reward the hard charger of the race.…
Videos
Jerry Hejna Memorial set for Mason City
The USMTS road warriors return to the Pritchard Family Auto Stores Mason City Motor Speedway at the North Iowa Fair in Mason City, Iowa, on Sunday, May 25, for the Jerry Hejna Memorial presented by Rookies Rockin' Sports Bar. The Summit U
USMTS heads for Hobo 100k Nickel Nationals
USMTS Memorial Day Weekend May 22-25