Passo de Giau is in the Dolomites in the province of Belluno, in Northeast Italy. The Passo de Giau reaches its peak elevation at 2,238 meters, and the climb itself has an elevation gain of 1,250 metres if you start climbing in Caprile. The climb is open all year round, and is about 16 km long. It has an average gradient of 7.9% and the highest gradient is 14.2%, but it does comprise of 29 (!) hairpin bends, which makes for some stunning views. The bends are also numbered. Here is a good video impression, although the views were limited on this rainy day.