USA Wyoming [10] Campbell County Fairgrounds dirt flat oval Gillette Wyoming aka: CamPlex Casper Speedway dirt flat oval Casper Wyoming Central Wyoming Fairgrounds dirt flat oval Casper Wyoming Douglas Motorsports Park paved airport drag strip Douglas Wyoming Gillette Thunder Speedway dirt oval Gillette Wyoming Rawlins Speedway dirt flat oval Rawlins Wyoming Ripple Ridge Raceway dirt oval Rawlins Wyoming Thunder Speedway dirt oval Gillette Wyoming Valentine Speedway dirt oval Glenrock Wyoming