WEBSTER CITY, Iowa -- The Iron Man Challenge returns to action on Saturday, Aug. 20, at the Hamilton County Speedway in Webster City, Iowa, followed by a date at the Nobles County Speedway in Worthington, Minn., on Sunday, Aug. 21.

Both events will be held in conjunction with the USMTS Modifieds.

USRA Karl Chevrolet Stock Car drivers will be racing for $700 to win each night while a $500 top prize awaits the USRA Karl Performance Parts B-Mod winner at the end of each program.

Justin Temeyer leads the points for the Stock Cars by a mere four points over defending Iron Man Challenge champion Nathan Wood. Mike Van Genderen is third, followed by Steve Jackson and Jeff Joldersma.

Matt Lettow leads the B-Mod rankings, but defending USRA B-Mod National Champion Brandon Hare is close behind. Parker Hale is third, Jared Timmerman sits in the fourth spot and four-time winner Cayden Carter holds the fifth spot.

Nineteen dates at thirteen dirt ovals comprise the 2011 schedule for the second season of the Iron Man Challenge. Points for both classes will be awarded based on a driver’s 10 best nights. Licensed USRA drivers in both classes also earn national points in the American Racer USRA Weekly Racing Series, and some tracks may also award track points.

The Iron Man Challenge points fund for the Stock Cars carries a $2,000 top prize with the tenth-place finisher earning $200. In the B-Mod class, the points champion will earn $700 with tenth-place taking home $100.

On Saturday, hot laps begin at 7 p.m. with racing to follow. Race fans can pick up coupons good for $2 off adult admission at both Casey’s General Stores locations in Webster City.

The Hamilton County Speedway is located 1.2 miles north of US 20 at exit 140, then 0.5 mile east on Bank St., then 5 blocks south on Bluff St. For more information, call the track office at 515-899-2222 or 515-832-5382 on race day or check out www.hamiltoncospeedway.com online.

On Sunday, hot laps are set for 5:30 p.m. with the first heat race at 6. Race fans can pick up coupons good for $2 off adult admission at both Casey’s General Stores locations in Worthington.

The Nobles County Speedway is a 1/4-mile semi-banked clay oval located off of I-90 at Exit 43, then 0.4 mile south on SR 59, then 0.4 mile west on Oxford St., then 0.2 mile north on McMullan (Pioneer Village). For more information, call the track hotline at (507) 360-3825 or check out www.noblescountyspeedway.net online.

To learn more about the USRA, visit www.usraracing.com or call 515-832-6000. You can also like us on Facebook, join us on MySpace or follow us on Twitter.

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USRA OFFICIAL SPONSORS: American Racer Racing Tires, Awesome Race Suits, Intercomp, Karl Chevrolet, Karl Performance Parts, KEVKO Oil Pans & Components, NITROQUEST, RACEceiver, RHS – Racing Head Service, Western Flyer Race Cars.

USRA PARTICIPATING SPONSORS: Boubin Tire & Automotive, BRODIX Cylinder Heads, DAY Motor Sports, DirtKnights.com, SpeedNet Direct.

USRA CONTINGENCY SPONSORS: COMP Cams, Dirthead.com, Eibach Springs, Forty9Designs.com, Genesis Shocks, Hooker Custom Harness, KSE Racing Products, Marsh Racing Wheels, New Vision Graphics, PBM Performance Products, Real Racing Wheels, Wehrs Machine & Racing Products.