Col de Jambaz from Saint-Jeoire
Col de Jambaz from Saint-Jeoire: 14.6 km at 3.8% average and 552 m of climbing, up to 1,027 m.
- Distance
- 14.6 km
- Elevation gain
- 552 m
- Elevation loss
- 48 m
- Average gradient
- 3.8 %
- Start altitude
- 530 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 8.9 %
- Hardest 2 km
- 6.3 %
- Hardest kilometre
- km 4 · 7.0%
- Above 8%
- 1.2 km (8% of the climb)
- Difficulty index
- 1.8 Easy
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 | 1h05 | 13.5 km/h |
| 3.0 W/kg — 210 W | 47 min | 18.7 km/h |
| 4.0 W/kg — 280 W | 38 min | 23.0 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 | 2.2 % | 553 m |
| 2 | 6.1 % | 614 m |
| 3 | 3.9 % | 652 m |
| 4 | 7.0 % | 722 m |
| 5 | 3.6 % | 759 m |
| 6 | 3.7 % | 795 m |
| 7 | 4.3 % | 838 m |
| 8 | 2.2 % | 860 m |
| 9 | 1.0 % | 871 m |
| 10 | 1.2 % | 883 m |
| 11 | 0.2 % | 886 m |
| 12 | 2.2 % | 907 m |
| 13 | 4.5 % | 952 m |
| 14 | 5.6 % | 1,008 m |
| 15 (partial) | 4.6 % | 1,034 m |
Download the GPX track All climbs of this col
Frequently asked questions
How long is the climb to Col de Jambaz?
The hardest climb of Col de Jambaz, from Saint-Jeoire, is 14.6 km long for 552 m of ascent, i.e. 3.8% average.
What is the steepest part of Col de Jambaz?
The steepest 500 m sits at 8.9%, and the hardest kilometre is the 4th, at 7.0%.
How long does it take to climb Col de Jambaz from Saint-Jeoire?
Col de Jambaz from Saint-Jeoire takes about 47 min at 3.0 W/kg, i.e. 18.7 km/h on average. The page gives three levels and their assumptions.
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