The Mason City Motor Speedway is a 3/8 clay oval track, racing USRA modifieds, USRA stock cars, USRA B-mods, USRA Hobby Stocks, plus USRA Tuners or Outlaw Mini-Mods, located 5.1 miles east of I-35 at exit 194 on Hwy 122. Sunday nights –See website for race times
