Located near Chamonix, this race combines the difficulty and beautiful scenery of the Fiz and Mont-Blanc mountains. Starting from the village of Chedde, at an altitude of 600m, the route is 80% on trails and jeep tracks. The route immediately climbs towards the villages of La Motte and Sancellemoz on steep slopes. There is a respite before reaching Lac Vert by a path which offers a magnificent view of the entire Mont Blanc chain.
Runners then continue to climb through forest and meadows to the highest point of the race, located at Ayères des Rocs underneath the tall cliffs of the Fiz mountain range. As well as 1350m of uphill, there is 600m of descent. There is a short traverse before dropping down to the finish, via the main ski run of the Plaine-Joux ski resort, at 1360m. There are two aid stations on the route and a meal for all competitors at the finish.