A collection of images from the pits, grandstands and around the Red Dirt Raceway in Meeker, Okla., prior to the Friday, May 13, event for the Summit USMTS National Championship presented by RacinDirt.

Here's a collection of USMTS sponsors and marketing partners who were on hand at the 2021 Performance Racing Industry (PRI) Trade Show, Dec. 9-11, at the Indiana Convention Center in downtown Indianapolis.

Images from the 13th Annual USMTS Nordic Nationals presented by PBM Performance Products at the Upper Iowa Speedway in Decorah, Iowa, on Sunday, May 30, 2021.

Images from the 18th Annual USMTS Southern Minnesota Spring Challenge presented by Boomtest Well Service at the Deer Creek Speedway in Spring Valley, Minn., on Saturday, May 29, 2021.

Images from the 13th Annual USMTS Rapid Rumble driven by Real Racing Wheels at the Rapid Speedway in Rock Rapids, Iowa, on Friday, May 28, 2021.