From Châtel
Minor departmental road
Col de Bassachaux, 1,778 m, in Haute-Savoie. Main climb: 10.1 km at 6.5% average, 659 m of climbing from Châtel.
Figures for the main climb (From Châtel). The other climbs are further down.
Opening Fermé l'hiver. Ouverture en général courant juin selon le déneigement.
| Main climb | Distance | Elevation gain | Elevation loss | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|---|
| From Châtel | 10.1 km | 659 m | — | 6.5 % | 11.6 % | 5.0 Moderate |
| From Monthey (Schweiz/Suisse/Svizzera/Svizra) | 30.7 km | 1,657 m | 290 m | 5.4 % | 14.7 % | 6.9 Sustained |
Scroll the table sideways to see every column.
Minor departmental road
Departmental road
2 ascents proposed here — other ways up this col remain possible.
Distances and elevation gains derived from the OpenStreetMap road network and a digital terrain model, measured on the very profile shown here.
Figures computed on 7 September 2026.
Cols one of the climbs above actually rides over — not merely neighbours as the crow flies.
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
The hardest climb of Col de Bassachaux, from Châtel, is 10.1 km long for 659 m of ascent, i.e. 6.5% average.
The steepest 500 m sits at 11.6%, and the hardest kilometre is the 6th, at 10.2%.
Fermé l'hiver. Ouverture en général courant juin selon le déneigement.
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