Jackson, Higley win Iron Man Challenge battles at Winston
The Iron Man Challenge invaded the I-35 Speedway in Winston, Mo., for the second time this season Thursday night with two new winners visiting victory lane at the 3/8-mile dirt oval. … read more

Final Four: Titles up for grabs as Iron Man Challenge charges into home stretch with four events in eight days
In just eight days, two new champions of the USRA Iron Man Challenge will emerge. With the final four events of the 2011 campaign between now and then, the racing action will be boiling hot as the USRA Karl Chevrolet Stock Car and USRA Karl Performance Parts B-Mod drivers battle it out for this year's titles. … read more

Six events dot July calendar for Iron Man Challenge
Six events are in the books for the Iron Man Challenge featuring USRA Karl Chevrolet Stock Cars and USRA Karl Performance Parts B-Mods, with 10 different winners emerging from 11 feature races so far. … read more

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