Woman in blue and white bikini bottom on blue and white hammock

Chamonix - Auvergne-Rhône-Alpes - France

The super Bowl of mountain races, a trail race that challenges the limits of resistance, time and discipline of any athlete, through the beautiful French, Swiss and Italian Alps, with a distance of 171 km and a positive slope Seriously, a cult race that is not for everyone but that you have to run once in your life