Trail Running50K

Occ

27 August 2026

Orsières, Valais, France

Race details

Modality

Individual

Organizer

UTMB Mont-Blanc

Distance

57 km

Elevation

+3,500 m

Capacity

1,200

Start time

08:15

Terrain

Trail

Difficulty

Advanced

Course profile

Mountainous

Minimum age

20+

Certified

Yes

Circuit

UTMB World Series

Event description

The OCC is a cornerstone event of the UTMB Mont-Blanc, taking runners on a 57km journey from Orsières in Switzerland to Chamonix. Featuring 3500m of elevation gain, this demanding race showcases the stunning beauty of the Valais region and serves as a world-class challenge for trail running enthusiasts.

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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

50K

Country

France

Region

Valais