The Mont-Blanc Marathon races are organized by the Club des Sports de Chamonix association with the support of the CMBM association. Under the name Marathon du Mont-Blanc 8 races are organized: 80km from Mont-Blanc, 42km from Mont-Blanc, 23km from Mont-Blanc, KM Vertical du Mont-Blanc, Star Race, Young Race Marathon, Blanc and Mini cross of Mont Blanc (800m to 3km reserved for children according to their age categories). For 4 days, the Chamonix Valley will vibrate with the rhythm of the races, 30 000 people will be present on Chamonix to attend or participate in this event, and everything is done to welcome runners, accompanying people and spectators in the best conditions.
The event has become significant in a few years, however our organization is nonprofit and voluntary and the will of local communities.
Faced with the enthusiasm, it is necessary to organize to improve the well-being and safety of all, with races taking place in the mountains in a sometimes difficult environment (in particular the 80 km of Mont Blanc), runners Must be conscious of this particularity and prepare themselves correctly. Each rider will be able to find a race adapted to his level of practice which will allow him to discover this unique environment that is the Valley of Chamonix-Mont-Blanc.