Trail Running100 Miles

UTMB

28 August 2026

Chamonix, Haute-Savoie, France

Race details

Modality

Individual

Organizer

UTMB Mont-Blanc

Distance

174 km

Elevation

+9,900 m

Capacity

2,300

Start time

18:00

Terrain

Trail

Difficulty

Elite

Course profile

Mountainous

Minimum age

20+

Certified

Yes

Circuit

UTMB World Series

Event description

The UTMB is the world's most prestigious trail running event, featuring an epic 174km loop around the Mont-Blanc massif starting and ending in Chamonix. With a staggering 9900m of elevation gain, this race is considered the pinnacle of ultra-endurance mountain running.

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In the news

⛰️ Trail Running24 Aug 2026

UTMB 2026: Chasing Jornet’s Record Amidst the Shadow of a Boycott

Chamonix experiences its tensest edition yet, with the 19-hour record under threat and an elite showdown shaped by sports politics and extreme weather.

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Sport

Trail Running

Distance

100 Miles

Country

France

Region

Haute-Savoie