Occ 56K Chamonix 2026

Race facts

• The course covers 56 km with 3,500 m of elevation gain.
• It takes place on a Thursday, August 27, 2026 — summer in this part of the world.
• The closest comparable trail running event is Hoka UTMB Mont-Blanc — Occ 55K in Orsières, 0 km away, on August 29, 2026.
• 12 of the 12 most similar events take place in the same month.