WorldwideUnited StatesGeorgiaWalker CountyFlintstoneWorldwideUnited StatesGeorgiaWalker CountyFlintstoneCycling Climbs in Flintstone There are 4 cycling climbs in Flintstone.Clicking on the climb category column will toggle between category and difficulty score.NameDistanceAvg GradientTotal ElevationClimb Category1.Happy Valley & Core Anne3.73 km2.2%80 mCat. 42.Happy Valley hill1.02 km3.2%32 mN/A3.Happy Valley Up 'n' Down Eastbound2.14 km0.6%14 mN/A4.If you're happy and you know it.......ride a bike!3.28 km0.2%7 mN/A