WorldwideNamibiaErongo Region4x4 onlyWorldwideNamibiaErongo Region4x4 onlyCycling Climbs in 4x4 only There are 3 cycling climbs in 4x4 only.Birkenfels (3)All Cycling Climbs in 4x4 onlyClicking on the climb category column will toggle between category and difficulty score.NameLocationDistanceAvg GradientTotal ElevationClimb Category1.D1991 ClimbBirkenfels 2.91 km3.6%103 mCat. 42.Keep left climbBirkenfels 0.73 km4.5%33 mN/A3.Sandy patch climbBirkenfels 0.49 km3.5%17 mN/A