American Historic Motorcycle Association (AHRMA) racing at Heartland MotorSports Park Topeka, KS this weekend 6-28,29,30. Spectators: $15/day children under 12 are free (multi day pricing also available). Racing starts at 12pm Saturday and 10am Sunday. Same program runs both days - 13 races each day. Friday is racer practice day. Vintage bikes and Sidecar racing. Sound of Thunder and Sound of Singles racing.