From Rey, go up to the Champillon mountain pasture (2057 m) and continue on towards the Létey-Champillon mountain hut (2375 m) and the Champillon Pass (2709 m). Go down to Ponteilles Damon (2046 m) and Desot (1807 m) and continue on towards the village of Saint-Rhémy (1621 m). Take the path that leads to the village of Laval (1624 m) and follow the tarmac road through the neighbourhoods of Couchepache and Mottes, then go up to the Merdeux Desot mountain pasture (1950 m) and then Tsa de Merdeux (2273 m). From the Lac de Merdeux plateau (2540 m), go up to the Malatrà Pass (2925 m), and from there down to the Bonatti mountain hut (2025 m) and along the long balcony that looks out over the Val Ferret and leads to the Arminaz mountain pasture (2009 m). Continue towards the Bertone mountain hut (1989 m) and descend towards the Val Sapin and Villair Superiore (1389 m). From there you can reach the church square in Courmayeur (1224 m), where the race ends.