WorldwideUnited StatesColoradoBoulder County57th StreetWorldwideUnited StatesColoradoBoulder County57th StreetCycling Climbs in 57th Street There are 3 cycling climbs in 57th Street.Clicking on the climb category column will toggle between category and difficulty score.NameDistanceAvg GradientTotal ElevationClimb Category1.N 57th Hill of Doom0.39 km5.3%20 mN/A2.Flyby2.6 km0.6%15 mN/A3.Airport Hill0.49 km2.1%10 mN/A