LIMESTONE 55.5 // Singlespeed Gravel Championships v.2026

LIMESTONE 55.5 is a singlespeed gravel championship held in Cumming, Iowa, beginning at 117 N 44th St. The primary men’s and women’s championship races cover 55.5 miles. Event listings also indicate a 89.3 km long course and a 53.6 km shorter option. LIMESTONE RACING presents this event, focusing on gravel racing with singlespeed bicycles. The Fun Ride is 33.3 miles and follows the championship course entirely, meaning non-competitive participants share the roads with the main competitors. While singlespeed bikes are recommended for this ride, geared bikes are permitted. This arrangement unites men’s and women’s championship racers, fun riders, and volunteers. Entry fees are listed as $0 for all race categories and the Fun Ride.