Valle di Chamonix — Val Montjoie
Tour du Mont Blanc — Stage 10: Les Houches → Les Contamines-Montjoie
14.5 km
+965 m
−983 m
7.5 h
Fitness level
Map & route
GPX track — verify on the ground before hiking
Description
From Les Houches climb to the Col de Voza (1,653 m), where the Tramway du Mont-Blanc rack railway crosses the pass, then descend into the green Val Montjoie through the hamlets of Bionnassay and La Villette to Les Contamines-Montjoie (1,167 m).
A linking stage between the loop’s two great French valleys. From the centre of Les Houches climb — on foot, or shortened by gondola — to the Col de Voza, where the rack rails of the Tramway du Mont-Blanc cut across the pass meadow: the little 1909 train still runs to the Nid d’Aigle, gateway to the French normal route up Mont Blanc. The descent crosses Bionnassay, a jewel of rural Savoyard architecture with its hanging glacier behind, then rolls gently through forest to Les Contamines-Montjoie, the last full-service village before the Bonhomme.
Key points
Col de Voza
1653 m · 4.3 km from start
Earth sciences
Geology & landscape
The Mont Blanc massif is a Hercynian granite batholith (~300 million years old) uplifted by the Alpine orogeny: the pale Mont Blanc granite — the “protogine” — forms the Peuterey and Géant spires. At its feet the tour walks on older crystalline basement rocks (gneiss and micaschist) and, in Val Veny, on the Mesozoic limestones of the Pyramides Calcaires, a sliver of sedimentary cover pinched between the granites. The Miage and Brenva moraines are textbook examples.
History & culture
The Tramway du Mont-Blanc, opened in 1909, was meant to reach the summit of Mont Blanc: it stopped at the Nid d’Aigle because of the Great War. Bionnassay is today a protected hamlet with no new building.
Water sources
Water at the stage's support points (Les Houches, Les Contamines-Montjoie). On the high ground and at the passes springs are not guaranteed: fill bottles in the valley and at the huts.
Getting there
Cross-border stage: on the foreign sides local public transport applies (PostAuto in Switzerland, line buses in France/Piedmont). Check seasonal timetables; in peak season several access links run by reservation only.
Warnings
- Book overnight stops in peak season
Start & end
Start
Les Houches
1005 m
Finish
Les Contamines-Montjoie
1164 m
Adjacent stages
ACurated and verified by Andrea
Data source: Tour du Mont Blanc — itinerario internazionale segnalato · Traccia calcolata su rete sentieri OpenStreetMap (ODbL); verificare sul terreno
Last verified:
Valle di Chamonix — Val Montjoie
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