Trail Grigne Sud - TGS Extreme 2026

Race facts

• It takes place on a Saturday, September 26, 2026 — autumn in this part of the world.
• The closest comparable trail running event is Swisspeaks 380 in Oberwald, 101 km away, on August 31, 2026.
• 4 of the 12 most similar events take place in the same month.