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UTMB is a 174km ultra trail of HOKA UTMB Mont-Blanc 2026 in Chamonix, France. The race starts on August 28, 2026 at 07:45 PM. It starts and finishes in Chamonix. The time limit is 45 h 30 min.
The course climbs 9700m+ and descends 9699m−. With 56m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 39% of the distance is uphill, 40% downhill and 20% flat. The longest climb runs 6.3km at an average 14.2% grade (898m of vertical). The longest descent runs 6.9km at 15.9% (1092m of vertical). The steepest climb averages 38.9% over 0.2km. The steepest descent drops at 36.6% over 0.4km. Surface: 71% trail, 17% road, and 7% smooth. Flat-equivalent effort: 250.8 FlatKM.
The highest summit on the course is Arête du Mont Favre (2442m), 70.6km from the start. Other named summits along the route: Le Béchar (1720m).
Trekking poles are strongly recommended: about 22.7km of the course is steep enough for them to pay off.
Quad damage risk is high (index 79 of 100), with 43% of the load in the first half: 5 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.
Historically on race day, start temperatures range from 11°C to 21°C, around 11°C at the highest point; the chance of precipitation is about 44%. Heavy rain of 10.0mm or more falls on about 11% of days around this date.
1,681 finishers completed the 2026 edition. Men's winner: Ben Dhiman (United States) in 18:16:29. Women's winner: Blandine L Hirondel (France) in 21:54:49.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for UTMB.
Other distances of HOKA UTMB Mont-Blanc 2026·····
Other editions of UTMB
Official websitemontblanc.utmb.world
