From Marlens (Val de Chaise)
Minor departmental road
Col de l'Épine, 947 m, in Haute-Savoie. Main climb: 6.4 km at 7.4% average, 476 m of climbing from Marlens (Val de Chaise).
Figures for the main climb (From Marlens (Val de Chaise)). The other climbs are further down.
| Main climb | Distance | Elevation gain | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|
| From Marlens (Val de Chaise) | 6.4 km | 476 m | 7.4 % | 12.3 % | 3.5 Moderate |
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Minor departmental road
1 ascent 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.
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
The hardest climb of Col de l'Épine, from Marlens (Val de Chaise), is 6.4 km long for 476 m of ascent, i.e. 7.4% average.
The steepest 500 m sits at 12.3%, and the hardest kilometre is the 2th, at 8.1%.
Sleipnir recognises the cols you cross from the GPS trace of your rides: the col ticks itself off the day you ride over it.
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