Mont-Blanc Marathon

The Mont-Blanc Marathon is a legendary race on the trail circuit, immersing runners in the stunning views of the Mont-Blanc massif. With a demanding course of 42 km and over 2,500 meters of elevation gain, it challenges trail runners on technical trails between alpine forests, panoramic ridges, and altitudinal passages. The event extends beyond this main distance: it also offers a 90 km ultra-trail, a 23 km race, a vertical kilometer, and several formats accessible to mountain running enthusiasts. Each year, over 10,000 runners convene in Chamonix for this trail celebration where performance and wonder unite.