Col de Chamrousse from Séchilienne
Col de Chamrousse from Séchilienne: 18.2 km at 7.8% average and 1,417 m of climbing, up to 1,800 m.
- Distance
- 18.2 km
- Elevation gain
- 1,417 m
- Average gradient
- 7.8 %
- Start altitude
- 368 m
- Road
- Minor departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 13.1 %
- Hardest 2 km
- 11.2 %
- Hardest kilometre
- km 3 · 11.5%
- Above 8%
- 8.4 km (46% of the climb)
- Difficulty index
- 11.8 Very hard
FIETS index: Δaltitude² / (10 × distance) + max(0, summit altitude − 1,000) / 1,000, lengths in metres. How this index works (article in French)
How long does it take?
| Level | Estimated time | Average speed |
|---|---|---|
| 2.0 W/kg — 140 W | 2h23 | 7.6 km/h |
| 3.0 W/kg — 210 W | 1h37 | 11.2 km/h |
| 4.0 W/kg — 280 W | 1h15 | 14.6 km/h |
Estimated for a 70 kg rider on a 9 kg bike, in still air, at a steady effort and without stopping. Wind, a stop at the fountain or a wheel to sit on move these figures by several minutes.
The route
Climb profile
- 10% and above
- 8 to 10%
- 6 to 8%
- 4 to 6%
- under 4%
Kilometre by kilometre
| Km | Gradient | Altitude at the top of the km |
|---|---|---|
| 1 | 8.8 % | 456 m |
| 2 | 9.5 % | 551 m |
| 3 | 11.5 % | 666 m |
| 4 | 8.3 % | 749 m |
| 5 | 10.6 % | 855 m |
| 6 | 8.9 % | 943 m |
| 7 | 9.4 % | 1,037 m |
| 8 | 10.7 % | 1,145 m |
| 9 | 10.7 % | 1,252 m |
| 10 | 2.2 % | 1,274 m |
| 11 | 4.7 % | 1,321 m |
| 12 | 6.7 % | 1,388 m |
| 13 | 6.1 % | 1,449 m |
| 14 | 6.8 % | 1,517 m |
| 15 | 7.9 % | 1,596 m |
| 16 | 7.4 % | 1,670 m |
| 17 | 5.2 % | 1,722 m |
| 18 | 5.5 % | 1,777 m |
| 19 (partial) | 5.0 % | 1,785 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Vaulnaveys-le-Bas 19.4 km · 7.5 %
- From Saint-Martin-d'Uriage 23.6 km · 5.9 %
Frequently asked questions
How long is the climb to Col de Chamrousse?
The hardest climb of Col de Chamrousse, from Séchilienne, is 18.2 km long for 1,417 m of ascent, i.e. 7.8% average.
What is the steepest part of Col de Chamrousse?
The steepest 500 m sits at 13.1%, and the hardest kilometre is the 3th, at 11.5%.
How long does it take to climb Col de Chamrousse from Séchilienne?
Col de Chamrousse from Séchilienne takes about 1h37 at 3.0 W/kg, i.e. 11.2 km/h on average. The page gives three levels and their assumptions.
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