La Marmotte is seen internationally by many cyclists as the tour of tours. With about 5000 altimeters (16500 ft), this event is a big challenge and the sprawling climbs give the Marmotte a hero status. The route sequentially climbs the Glandon + Croix de fer, Télégraphe, Galibier and ends at the summit of the infamous Alpe d'Huez. Due to its enormous popularity, enrolling on time is really a must as it is fully booked every year.
La Marmotte height profile