WorldwideSpainCastile and LeónBoca de HuérganoSiero de la ReinaWorldwideSpainCastile and LeónBoca de HuérganoSiero de la ReinaCycling Climbs in Siero de la Reina There are 2 cycling climbs in Siero de la Reina.Clicking on the climb category column will toggle between category and difficulty score.NameDistanceAvg GradientTotal ElevationClimb Category1.Carretera De B.H. A Besande Climb2.94 km4.8%140 mCat. 42.Besande-Siero-Monteviejo-Besande19.77 km0.4%71 mN/A