From Beaulieu
Minor departmental road
Col de la Serre, 371 m, in Ardèche. Main climb: 3.3 km at 6.2% average, 206 m of climbing from Beaulieu.
Figures for the main climb (From Beaulieu). The other climbs are further down.
| Main climb | Distance | Elevation gain | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|
| From Beaulieu | 3.3 km | 206 m | 6.2 % | 8.3 % | 1.3 Easy |
| From Bessas | 1.5 km | 137 m | 9.0 % | 11.4 % | 1.2 Easy |
Scroll the table sideways to see every column.
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 Col de la Serre, from Beaulieu, is 3.3 km long for 206 m of ascent, i.e. 6.2% average.
The steepest 500 m sits at 8.3%, and the hardest kilometre is the 2th, at 7.0%.
Sleipnir recognises the cols you cross from the GPS trace of your rides: the col ticks itself off the day you ride over it.
Create an accountFree during the beta, no card required — places are limited.
A Polar watch syncs on its own; with any other watch, import your GPX or TCX files.