From Nancy-sur-Cluses
Minor departmental road
Col de Romme, 1,297 m, in Haute-Savoie. Main climb: 6.6 km at 9.0% average, 597 m of climbing from Nancy-sur-Cluses. The Tour de France has been over it 3 times since 2009.
Figures for the main climb (From Nancy-sur-Cluses). The other climbs are further down.
| Main climb | Distance | Elevation gain | Elevation loss | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|---|
| From Nancy-sur-Cluses | 6.6 km | 597 m | — | 9.0 % | 14.6 % | 5.7 Sustained |
| From Cluses | 17.9 km | 875 m | 60 m | 4.9 % | 10.8 % | 4.0 Moderate |
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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.
| Year | Stage | Cat. | First over the top |
|---|---|---|---|
| 2021 | Stage 8 Oyonnax → Le Grand-Bornand | Category 1 | Michael Woods |
| 2018 | Stage 10 Annecy → Le Grand-Bornand | Category 1 | Julian Alaphilippe |
| 2009 | Stage 17 Bourg-Saint-Maurice → Le Grand-Bornand | — | Fränk Schleck |
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
The hardest climb of Col de Romme, from Nancy-sur-Cluses, is 6.6 km long for 597 m of ascent, i.e. 9.0% average.
The steepest 500 m sits at 14.6%, and the hardest kilometre is the 2th, at 10.7%.
The Tour de France has crossed Col de Romme 3 times, from 2009 to 2021.
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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