The Early Years
2004Established in 2004, the Marathon du Mont-Blanc is now 22 years old. From its first edition in Chamonix, it has evolved into a race that reflects the character of its host region in France.
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25. Juni 2026
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An iconic alpine marathon starting in Chamonix and finishing at the foot of Mont-Blanc, traversing the Chamonix Valley with relentless elevation changes through stunning mountain scenery. The course passes through classic alpine villages including Les Praz, Argentière, and Vallorcine before descending back toward Chamonix. This is one of the most challenging marathon courses in Europe, demanding significant climbing and technical trail management.
Early summer alpine conditions with cool mornings and mild afternoons. Occasional mountain showers possible, with significant temperature variation between valley floor and higher elevations.

The Race

Chamonix
Established in 2004, the Marathon du Mont-Blanc is now 22 years old. From its first edition in Chamonix, it has evolved into a race that reflects the character of its host region in France.
The fastest time ever recorded at the Marathon du Mont-Blanc is 03:15:42, set by Kilian Jornet in 2013. Every year, new contenders line up hoping to challenge that mark on the streets of Chamonix.
With 2800m of elevation gain, the Marathon du Mont-Blanc is not a course for the faint-hearted. The climbs are where races are won and lost — where the gap between training and undertrained reveals itself without mercy. Locals say the course doesn't beat you; it just waits for you to beat yourself.
The Marathon du Mont-Blanc carries an "extreme" difficulty rating for good reason. The combination of terrain, conditions, and distance creates an event where finishing is a genuine achievement. Drop-out rates are high, preparation requirements are serious, and the line between adventure and misadventure is thin.
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03:15:42
Kilian Jornet (2013)
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