Route
One loop, three countries.
Counter-clockwise from Les Houches: over the big French cols into Val Veni, along the Italian side of the massif, up over Grand Col Ferret into the Swiss Val Ferret, then back into France via Col de Balme and the Grand Balcon Sud.
The loop
Counter-clockwise around the Mont Blanc massif — hover a marker for the day.
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Border crossings
- Day 3 — 🇫🇷 France → 🇮🇹 Italy at Col de la Seigne
- Day 5 — 🇮🇹 Italy → 🇨🇭 Switzerland at Grand Col Ferret
- Day 8 — 🇨🇭 Switzerland → 🇫🇷 France at Col de Balme
The cols
- Col du BonhommeD2 · 2329 m
- Col de la Croix du BonhommeD2 · 2483 m
- Col de la Seigne 🇫🇷→🇮🇹D3 · 2516 m
- Grand Col Ferret 🇮🇹→🇨🇭D5 · 2537 m
- Fenêtre d'Arpette (variant)D7 · 2665 m
- Col de Balme 🇨🇭→🇫🇷D8 · 2191 m
- Tête aux VentsD9 · 2132 m
Ascent profile
Meters climbed per stage. Day 9 is the biggest.
D1
Les Contamines+1797 m
D2
Les Chapieux+934 m
D3
Col Chécrouit+1702 m
D4
Bonatti / Elena (decision pending)+1928 m
D5
La Fouly+633 m
D6
Champex-Lac+805 m
D7
Trient+1010 m
D8
Argentière+1274 m
D9
Chamonix+2211 m
Maps to load offline
- • IGN 1:50,000 TMB paper map + Cicerone guidebook
- • TMBmap.com — dedicated offline app
- • Gaia GPS with the TMB GPX loaded