The mountain is crossed by the D41/D110 road near to the Crêt de Chatillon at an altitude of 1,660 m (5,446 ft).

[1] The mountain has featured in the Tour previously, but this was during a neutralized stage in the wake of the 1998 Festina affair.

The total climb is 11.3 km (7.0 mi) long gaining 922 m (3,025 ft) in height at an average gradient of 8.2%.

[5] This is the route used on Stage 20 of the 2013 Tour de France and is ranked as an Hors catégorie climb.

[1][6] The route to the summit from the start at Annecy crosses the Col de Leschaux (944 m (3,097 ft)) after 17.5 km (10.9 mi) before descending to Saint-Jean-d'Arvey.