Grigne Skymarathon

Race facts

• The course covers 42 km with 3,600 m of elevation gain.
• It takes place on a Sunday, September 20, 2026 — autumn in this part of the world.
• The closest comparable trail running event is Occ in Orsières, 178 km away, on August 30, 2026.
• 3 of the 12 most similar events take place in the same month.