From Marlens (Val de Chaise)
Departmental road
Col du Marais — 843 m
Col du Marais, 843 m, in Haute-Savoie. Main climb: 12.6 km at 3.8% average, 478 m of climbing from Marlens (Val de Chaise). The Tour de France has been over it 1 times since 1994.
At a glance
- Distance
- 12.6 km
- Elevation gain
- 478 m
- Average gradient
- 3.8 %
- Difficulty index
- 1.1 Easy
Figures for the main climb (From Marlens (Val de Chaise)). The other climbs are further down.
Location
- Department
- Haute-Savoie
- Altitude
- 843 m
- Coordinates
- 45.82430, 6.33428
Map of the climbs
- From Marlens (Val de Chaise)
- From Thônes
Cycling ascents
| Main climb | Distance | Elevation gain | Elevation loss | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|---|
| From Marlens (Val de Chaise) | 12.6 km | 478 m | 98 m | 3.8 % | 9.7 % | 1.1 Easy |
| From Thônes | 6.1 km | 209 m | — | 3.4 % | 5.6 % | 0.7 Easy |
Scroll the table sideways to see every column.
- 10% and above
- 8 to 10%
- 6 to 8%
- 4 to 6%
- under 4%
From Thônes
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.
The Tour de France here
- Crossings
- 1
- Editions
- 1
- On the route
- from 1994 to 1994
| Year | Stage | Cat. | First over the top |
|---|---|---|---|
| 1994 | Stage 18 Moûtiers → Cluses | — |
Cols nearby
- Col de l'Épine 947 m · 5 km
- Col de la Forclaz 1,147 m · 7 km
- Col de Merdassier 1,500 m · 8 km
- Col de la Croix Fry 1,467 m · 8 km
- Col de L'Arpettaz 1,581 m · 8 km
- Col des Aravis 1,487 m · 11 km
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
Frequently asked questions
How long is the climb to Col du Marais?
The hardest climb of Col du Marais, from Marlens (Val de Chaise), is 12.6 km long for 478 m of ascent, i.e. 3.8% average.
What is the steepest part of Col du Marais?
The steepest 500 m sits at 9.7%, and the hardest kilometre is the 6th, at 7.6%.
How many times has the Tour de France been over Col du Marais?
The Tour de France has crossed Col du Marais 1 times, from 1994 to 1994.
Col du Marais: add this col to your collection
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