42.195 km
Distance
2,800 m
Elevation Gain
5:45:00
Average Finish Time
650
Total Finishers
2004
Established
Mountainous
Profile
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Course & Elevation
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.
🌤️ Weather
Early summer alpine conditions with cool mornings and mild afternoons. Occasional mountain showers possible, with significant temperature variation between valley floor and higher elevations.
🏆 Course Record
03:15:42
Kilian Jornet (2013)
Registration
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🎯 Fun Facts
- ▸ The race traverses four valleys and crosses the Chamonix Valley multiple times with over 2,800m of climbing—more elevation than most ultra-marathons.
- ▸ The finish elevation of 2,385m at the base of Mont-Blanc makes this marathon one of the highest-finishing point standard marathons in Europe.
- ▸ Named after Europe's highest peak, Mont-Blanc (4,808m) is visible throughout much of the race course.
- ▸ The race attracts elite trail and fell runners who treat it as a training objective for larger ultramarathons and alpine challenges.
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