Trail Running100K

90km du Mont-Blanc

26 June 2026

Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes, France

Race details

Modality

Individual

Organizer

Marathon du Mont-Blanc

Distance

92 km

Elevation

+6,330 m

Participants

7,494

Capacity

1,000

Start time

04:00

Terrain

Trail

Difficulty

Elite

Course profile

Mountainous

Minimum age

20+

Certified

Yes

Circuit

Marathon du Mont-Blanc

Event description

The 90km du Mont-Blanc is renowned as one of the most technical and demanding trail races in France, featuring a stunning course with breathtaking views of the Mont-Blanc massif. Starting from Chamonix, this race challenges athletes with 6330m of elevation gain across high-altitude alpine terrain.

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In the news

⛰️ Trail Running22 Jun 2026

Chamonix Under Pressure: Golden Trail Series Braces for Rémi Bonnet’s Record Attempt

Rémi Bonnet threatens the historic Mont-Blanc Marathon record in an edition defined by extreme speed and a race against the clock in Chamonix.

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Sport

Trail Running

Distance

100K

Country

France

Region

Auvergne-Rhône-Alpes