Greiner, Lettow score in USRA Iron Man Challenge opener at I-35 Speedway
The USRA Iron Man Challenge kicked off the 2011 season Saturday night at the I-35 Speedway in Winston, Mo., with the USRA Karl Chevrolet Stock Cars being joined by the USRA Karl Performance Parts B-Mods for the first time. … read more

Stock Cars, B-Mods take on I-35 Speedway Saturday in USRA Iron Man Challenge opener
On Saturday, April 2, the Iron Man Challenge for USRA Karl Chevrolet Stock Cars and USRA Karl Performance Parts B-Mods will kick off the season at the I-35 Speedway in Winston, Mo., for one huge event. Stock Cars will be racing for $700 to win and $125 to start while B-Mods will battle for $500 to win and $80 to start the main event. … read more

Seventeen dates comprise USRA Iron Man Challenge slate; B-Mods part of 2011 line-up
Seventeen dates at eleven dirt ovals comprise the 2011 schedule for the second season of the Iron Man Challenge for USRA Karl Chevrolet Stock Cars and USRA Karl Performance Parts B-Mods. … read more

Carpenter's Classics Sponsor Video

Hwy 36 Auto & Diesel Sponsor Video

Highlights: USRA Heartland Modified Tour 4/12/25
Highlights from the USRA Heartland Modified Tour presented by Real Racing Wheels featuring the Summit USRA Weekly Racing Series at the I-35 Speedway in Winston, Mo., on Saturday, April 12, 2025. Video provided by RacinDirt. Check us out at https://usraracing.… watch video