Vallée Blanche: the legendary off-piste ski descent from the Aiguille du Midi
Written by Victor Michel — history enthusiast and passionate alpinist based in Chamonix. Publié le 16 juillet 2026
The Vallée Blanche is the most famous off-piste ski descent in the Alps: about 20 km and over 2,000 m of elevation loss, starting from the Aiguille du Midi (3,842 m), across several glaciers of the Mont Blanc massif. It is done with a high-mountain guide, due to crevasses and glacier navigation.
À retenir
- About 20 km, over 2,000 m of elevation loss, 3 to 4 hours of descent
- Ski start from the Aiguille du Midi, above 3,800 m altitude
- Black-level skiing required, comfortable in variable or powder snow
- High-mountain guide strongly recommended: crevasses, glacier navigation, access ridge
What is the Vallée Blanche?
The Vallée Blanche is an off-piste ski route crossing several glaciers of the Mont Blanc massif, between the Aiguille du Midi and Chamonix. It is one of the most famous off-piste descents in the Alps, reachable in half a day via the Aiguille du Midi cable car.
The most technical part: the Aiguille du Midi ridge
The most technical part comes right at the start: descending the summit ridge of the Aiguille du Midi is done on foot, skis in hand, roped up. If the ridge is not fitted with a fixed handrail, crampons are essential.
Required level and guiding
A good black-level ski standard is needed, with genuine comfort in variable or powder snow on a glacier. A high-mountain guide is strongly recommended: only a guide knows the current position of crevasses, which varies with conditions and season.
À lire ensuite
FAQ
What is the distance and elevation loss of the Vallée Blanche descent?
About 20 km with over 2,000 m of elevation loss, from the Aiguille du Midi (above 3,800 m) down to Chamonix, in 3 to 4 hours of descent.
What ski level is needed for the Vallée Blanche?
A good black-run level, with genuine comfort in variable or powder snow on a glacier. This is not a descent for beginner or intermediate skiers.
Is a guide mandatory for the Vallée Blanche?
Not legally mandatory, but strongly recommended: crevasse positions vary with conditions and season, and only a high-mountain guide knows the safe route on any given day.
Why is the start of the Vallée Blanche descent unusual?
Because descending the summit ridge of the Aiguille du Midi is done on foot, skis in hand, roped up, with crampons essential if the ridge has no fixed handrail.
Where does the Vallée Blanche descent start and end?
It starts at the Aiguille du Midi, reachable by cable car from Chamonix, and ends in the Chamonix valley after crossing several glaciers of the massif.