Col de Crans-Montana from Sierre

Col de Crans-Montana from Sierre is one of cycling's great tests — 15.4km of sustained climbing, gaining 1,278m from base to summit. The average gradient of 8.3% disguises ramps of 18.4% — the kind of gradient that turns plans into prayers. 13 hairpins punctuate the ascent, offering brief respite in the corners before the gradient bites again. The road reaches 1,823m — high enough to feel the altitude on tired legs. Located in Valais, Switzerland.