Heart O' Texas Speedway is a 1/4-mile, high-banked clay oval located seven miles north of Waco on Interstate 35. The speedway hosts racing events every Friday night from March through September and has been in continuous operation for more than 50 years. Dirt track racers from throughout Texas compete in eight weekly racing divisions:  IMCA Modifieds, IMCA SportMods, IMCA Hobby Stocks, Street Stocks, Pure Stocks, Cruisers, Junior Mini Stocks and Twisters. Special Event classes include ASCS Sprint Cars, Sprint Series of Texas, Mini Sprints, Texas Wing Modifieds, IMCA Stock Cars and   USMTS Modifieds.

Dirt track racing in Waco dates back to 1916 at the 1/2-mile Texas Cotton Palace Fairgrounds oval. Racing continued at the fairgrounds until the 1940s when the Suicide Bowl opened where Lake Waco now sits.  The original Heart O' Texas Speedway opened in 1955 and was in operation until the current facility was built in 1966.