The third season of the Iron Man Challenge will kick off the 2012 campaign this weekend at the ‘7th Annual Spring Fling @ The Bullring’ this Friday and Saturday, March 16-17, at the Humboldt Speedway in Humboldt, Kan.

Officials from the United States Racing Association have released the 2012 schedule for the popular USRA Iron Man Challenge featuring USRA Karl Chevrolet Stock Cars and USRA Karl Performance Parts B-Mods.

In his 25th year of racing, Johnny Bone Jr. of Pea Ridge, Ark., put together a career year on the dirt tracks during the 2011 season. He didn't break his personal season wins record, but his 22 feature wins in 44 starts against some big fields and stiff comeptition was remarkable and earned the 45-year-old the title of USRA RHS Modified National Champion.

As the curtin drew to a close on Humboldt Speedway's regular season Friday night, 1993 track champion John Allen started the night with a chance to pass Justin “Whitey” Folk for the USRA RHS Modified points title.

Back after an absence of several weeks, Brian Bolin led all 20 laps of the USRA RHS Modified feature Friday night at the Humboldt Speedway.

John Allen wired the USRA RHS Modified feature field Friday at the Humboldt Speedway with an absolutely flawless performance.

Round 2 of the Humboldt Speedway "two-fer" weekend went off Saturday night. It was wire to wire for Terry Beckham II who recorded his second USRA RHS Modified win of the year at 'The Hummer.'

Due to the absense of a demo derby at this year's Allen County Fair, Humboldt Speedway offered up a rare "two-fer" with back-to-back race nights on Friday and Saturday.

Jess Folk Jr. seems to have hit on the winning set up in a big way as he powered his way through the USRA RHS Modified feature field on his way to his second win of the year Friday night at the Humboldt Speedway.

Johnny Bone Jr. tracked down and passed Terry Beckham II for the win in the USRA RHS Modifieds Friday night at the Humboldt Speedway.

Thirty-six USRA RHS Modifieds were on hand Friday night at the Humboldt Speedway as time trials were used to set the 30-lap, 22-car "A" Feature that paid the winner $1,500.

If you missed Friday night’s races at the Humboldt Speedway, you probably missed out on the best race ever at the track. With 27 USRA RHS Modifieds signing in for the evening, we knew it was going to be an outstanding show ... and it was.