From Le Bourget-du-Lac
Minor departmental road
Mont du Chat, 1,486 m, in Savoie. Main climb: 13.5 km at 9.3% average, 1,256 m of climbing from Le Bourget-du-Lac.
Figures for the main climb (From Le Bourget-du-Lac). The other climbs are further down.
| Main climb | Distance | Elevation gain | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|
| From Le Bourget-du-Lac | 13.5 km | 1,256 m | 9.3 % | 12.9 % | 12.2 Very hard |
| From Meyrieux-Trouet | 12.0 km | 1,079 m | 9.0 % | 14.8 % | 10.2 Hard |
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Minor departmental road
Minor 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.
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
The hardest climb of Mont du Chat, from Le Bourget-du-Lac, is 13.5 km long for 1,256 m of ascent, i.e. 9.3% average.
The steepest 500 m sits at 12.9%, and the hardest kilometre is the 4th, at 11.0%.
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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