Barrage de Mauvoisin from Sembrancher

Barrage de Mauvoisin from Sembrancher covers 24.6km and 1,283m of climbing, reaching 1,963m at the summit. The average gradient of 5.2% disguises ramps of 12.3% — the kind of gradient that turns plans into prayers. 16 hairpins punctuate the ascent, offering brief respite in the corners before the gradient bites again. The road reaches 1,963m — high enough to feel the altitude on tired legs. Located in Valais, Switzerland.