Jeremy Chambers led from the pole and held off several challenges Matt Johnson and Jon Sheets to take the USRA Modified win while Riley Whitworth captured the Out-Pace USRA B-Mod race.

USRA Weekly Racing Series results for Friday, April 22, 2016, from the Humboldt Speedway in Humboldt, Kan.

Lucas Isaacs dominated the Out-Pace USRA B-Mod main event on the final night of the Iron Man Challenge during King of America VI presented by Chix Gear at the Humboldt Speedway.

Steve Muilenburg patched together 20 flawless laps Friday night at the Humboldt Speedway and claimed a $1,500 paycheck with a win in the Iron Man Challenge Out-Pace USRA B-Mod main event.

Shawn Strong held true to his name Thursday at the Humboldt Speedway as he led from start to finish to capture the Out-Pace USRA B-Mod victory on opening night of King of America VI presented by Chix Gear.

You can watch every lap of every race during the King of America VI presented by Chix Gear live on RacinDirt.com all weekend long.

Kyle Falck and Mike Striegel fired the opening shots in the 2016 USRA Iron Man Challenge with victories at the Humboldt Speedway on Saturday night.

The USRA Iron Man Challenge will launch its 2016 campaign this Friday, March 19, at the Humboldt Speedway in Humboldt, Kan., and I-35 Speedway in Winston, Mo., on Sunday, March 20.

On Thursday, Friday and Saturday, USRA Modifieds headlined the program each night during the 2nd Annual B-Mod Battle at the Bullring at the Humboldt Speedway.

All remaining reserved seat tickets for this year’s King of America VI presented by Chix Gear are now available to the general public.

A record 228 people attended Saturday night’s annual USRA Awards Banquet in the Star Pavilion located at the Ameristar Casino Hotel in Kansas City as the USRA closed the curtain on the 2015 season.

Entering its seventh season, the USRA Holley Iron Man Series once again features a combination of both new venues and familiar facilities at 18 of the finest dirt ovals in Iowa, Kansas, Iowa, Minnesota and Missouri.