The Aiguilles Rouges National Nature Reserve

A part of the Mont-Blanc Marathon races go through the Aiguilles Rouges National Nature Reserve, site protected since 1972.

Races that cross the Nature Reserve : 


You run on a path through a botanical garden between Tré le Champ and the Col des Montets. All along it, there are some information about the most outstanding flowers you will find. At the top of the Col des Montets, behind the information cabin, you may see some ibex.

While running from the Aiguillette des Posettes to the Col des Montets, you also cross the AIguille Rouge Nature Reserve. Some chamois and wild board live in this area.

In the place known as "Les Ardoisières" there are some eagles.  Don't look at the sky but keep focused on the race !

23km and 42km:

You go through the Nature Reserve after crossing the road and going to la Flégère. Many ibex live in this area.


The Aiguilles Rouges National Nature Reserve begins after la Flégère until the Col des Montets. On these paths, you may meet many ibex. Thank you for not disturbing them.

 We ask runners to protect the nature reserve by running only on the paths and keeping their wastes.

 Download the Aiguilles Rouges Nature Reserve regulations "Ensemble, préservons la nature" (French).

reserve aiguille rouge