Skiing in Chamonix–Mont-Blanc

The Vallée Blanche is the most famous off-piste run in the Alps, and the reason is scale.

From the top of the Aiguille du Midi cable car at 3,842 metres you ski roughly twenty kilometres and over two vertical kilometres down a living glacier, through the heart of the Mont Blanc massif, all the way back toward Chamonix.

It is not steep — a competent intermediate can ski the terrain — but it is genuine high-mountain glacier travel, threading between crevasses and beneath séracs and 4,000-metre walls, and it begins with a famously exposed knife-edge arête you down-climb on foot from the lift station.

What you get is not a piste but an expedition on skis: serious, beautiful, and utterly unlike a resort run. On a clear day it is one of the great days out in skiing.

A long off-piste glacier descent — around twenty kilometres — beginning with a walk down the exposed, roped arête from the Aiguille du Midi station, then skiing untracked snow through a landscape of crevasses, séracs and towering rock.

The skiing itself is not steep; the seriousness is the glaciated terrain, the altitude at the top, and the objective hazards you route around. Conditions vary from powder to ice to slush depending on the day and season.

It finishes near the Mer de Glace, from where you descend to Chamonix. This is a mountaineering day disguised as a ski run — a competent off-piste intermediate can do it, but not alone.

Hire an IFMGA mountain guide — effectively essential, both for the crevasse hazard and to read conditions on the day, and required for the roped arête at the start. Go in the winter-to-spring season, roughly December to April, with late winter often the most reliable snow.

Buy the Aiguille du Midi lift ticket and go early on a settled, clear day; the whole point is visibility and stable conditions. Come as a confident off-piste skier able to handle variable snow for a long descent.

Bring a harness and glacier gear as your guide advises, warm layers for 3,842 metres, and an early start to beat afternoon changes.