Marathon du Mont-Blanc
Chamonix-Mont-Blanc, France • 25-28 Jun 2026
Marathon du Mont-Blanc
The Marathon du Mont-Blanc is a trail running event organized by the Club des Sports de Chamonix. Held annually in the Mont-Blanc massif, the event brings together 10,000 runners across various trails surrounding Chamonix. The 2026 edition is scheduled to take place over four days in late June.
The event features a wide range of race distances and formats to accommodate different participants:
- 90km du Mont-Blanc
- 42km du Mont-Blanc
- 23km du Mont-Blanc
- 10km du Mont-Blanc
- Duo Étoilé (Night race for pairs)
- KM Vertical (Vertical kilometer)
- The Young Race
- Mini Cross (Distances of 800m, 2km, and 3km)
The event infrastructure includes a Trail Camp located at Place du Mont-Blanc, which hosts an exhibitor salon throughout the first three days. Bib collection is organized by appointment at the EMC2 hall. Most races start from Chamonix town center at locations such as Place du Triangle de l'Amitié or Aire des parapentes, with finishes occurring at various altitudes including Planpraz or back in the town center.
The organization is managed by a non-profit association founded in 1905, focusing on heritage and solidarity. For the 2026 edition, most race categories reached full capacity shortly after opening. Visit the organization's website for the most recent information.