
Bertone to Bonatti balcony traverse
The signature Tour du Mont Blanc day: a high traverse facing the Grandes Jorasses the whole way.
Hard
- Distance
- 12 km
- Ascent
- 1,000 m
- High point
- 2,025 m
- Walking, not counting the bus
- 5 to 6.5 h
Where it is
Reading your answers
How high
The top stands 801 m above Courmayeur, Piazzale Monte Bianco. Total ascent is higher, because the path rises and falls on the way.
Before you go
- Rifugio Giorgio Bertone · 1,989 mUsually open 12 June to 26 September 2026. Ring to be sure.+39 347 032 5785 · website
- Rifugio Walter Bonatti · 2,025 mOpen 26 May to 30 September 2026.+39 335 684 8578 · website
Where to stand
- Lavachey · 1,642 mA bench and the timetable on a post. No shelter from the weather.
What to carry. Boots, poles for the descent, food for the whole day, and a shell. Snow lies in the high cols into July.
If it goes wrong
112One number for mountain rescue, an ambulance, or the fire service. It is free, it works from a phone with no card and no credit, and it can put a translator on the line.
Worth reading before you leave. Soccorso Alpino Valdostano · The regional forecast · Wind and temperature up high
Worth knowing
Finish at Lavachey and ride line 924 home. The last bus down is 19:30 in high summer and 19:10 from 10 September.