A steep dead end above the Serre-Ponçon lake in the Hautes-Alpes: from Remollon about 12 km at over 9 %, with ramps past 15 % and a wide view over the lake from the top.
It has never been in a major race.
Mont Colombis
1733 m · France
Mont Colombis is a 1733 m road climb in France. From Remollon: 11.7 km at an average of 9.1%, climbing 1063 m; the steepest 500 m is about 15.8%.
Open on the map →The side
| From | Length | Gain | Avg | Max | Cat |
|---|---|---|---|---|---|
| Remollon | 11.7 km | +1063 m | 9.1% | ≈15.8% | HC |
From Remollon
Every km of the Remollon side
| Km | From | To | Grade |
|---|---|---|---|
| 0–1 | 670 m | 717 m | 4.7% |
| 1–2 | 717 m | 790 m | 7.3% |
| 2–3 | 790 m | 877 m | 8.8% |
| 3–4 | 877 m | 1002 m | 12.5% |
| 4–5 | 1002 m | 1094 m | 9.2% |
| 5–6 | 1094 m | 1162 m | 6.8% |
| 6–7 | 1162 m | 1229 m | 6.7% |
| 7–8 | 1229 m | 1317 m | 8.8% |
| 8–9 | 1317 m | 1412 m | 9.4% |
| 9–10 | 1412 m | 1533 m | 12.1% |
| 10–11 | 1533 m | 1658 m | 12.5% |
| 11–11.7 | 1658 m | 1732 m | 11.0% |
Hors catégorie≈20 hairpin bendsfaces SW
0–4%4–7%7–10%10–12%12%+
The number under each km is its average grade. Flags mark the steepest stretches of about 500 m. Heights come from an elevation model, so grades are approximate.