UltramarathonChamonix, France
UTMB Mont-Blanc
From the field
Race reports
Overview
About this event
UTMB Mont-Blanc is one of the defining events in Ultramarathon, drawing athletes from around the world to Chamonix.
Chamonix, France
Location
2026-08-28
Date
171 km
Distances
10000 m
Elevation
Alpine trail
Terrain
Extreme
Difficulty
Route
The course
Route preview
Conditions
Weather history
Cool mornings, warming through the day. Afternoon storms possible at altitude.
Gallery
Photos
Athlete feedback
Reviews
Hannah K.★★★★★
One of the best-organized races I've ever done. The aid stations were generous and the volunteers kept me going through the hardest miles.
Marcus T.★★★★☆
Brutal but beautiful. The course delivers on every promise — just respect the elevation and start your fueling early.
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