On the north-western side, starting from
Beaufort, the climb is 20.3 km long. Over this distance, the climb is 1227 m. (an average percentage of 6.0%), with the steepest sections at 9.06%. From
Bourg-Saint-Maurice to the south-east, the Cormet de Roselend is 19.3 km long. Over this distance, the climb is 1154 m. (an average percentage of 6.0%), with the steepest sections at 8.9%. ==Appearances in Tour de France==