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.
Course Facts
📈 Elevation Profile
📊〰️
Interactive elevation chart coming soon
2,800m total gain • Mountainous profile
🗺️ Course Map
🗺️
Interactive course map coming soon
Chamonix, France • 42.195km road
🌤️ Weather on Race Day
🌡️
16°C
Temperature
💧
65%
Humidity
🌧️
35%
Rain Chance
📝
Early summer alpine conditions with cool mornings and mild afternoons. Occasional mountain showers possible, with significant temperature variation between valley floor and higher elevations.
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