Col de l'Iseran from Val-d'Isère
Col de l'Iseran from Val-d'Isère: 15.7 km at 5.8% average and 915 m of climbing, up to 2,764 m.
Opening Fermé l'hiver. La route du col est déneigée au printemps et rouvre en général entre fin mai et fin juin selon l'enneigement — vérifier l'état de la route avant de partir.
- Distance
- 15.7 km
- Elevation gain
- 915 m
- Average gradient
- 5.8 %
- Start altitude
- 1,854 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 9.9 %
- Hardest 2 km
- 7.2 %
- Hardest kilometre
- km 12 · 7.4%
- Above 8%
- 2.8 km (18% of the climb)
- Difficulty index
- 7.0 Sustained
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 | 1h36 | 9.7 km/h |
| 3.0 W/kg — 210 W | 1h07 | 14.1 km/h |
| 4.0 W/kg — 280 W | 52 min | 18.0 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 | 2.8 % | 1,882 m |
| 2 | 6.2 % | 1,943 m |
| 3 | 6.8 % | 2,011 m |
| 4 | 4.7 % | 2,058 m |
| 5 | 2.3 % | 2,082 m |
| 6 | 7.3 % | 2,154 m |
| 7 | 6.3 % | 2,217 m |
| 8 | 6.9 % | 2,286 m |
| 9 | 3.5 % | 2,321 m |
| 10 | 5.6 % | 2,377 m |
| 11 | 5.6 % | 2,433 m |
| 12 | 7.4 % | 2,507 m |
| 13 | 6.5 % | 2,573 m |
| 14 | 6.6 % | 2,639 m |
| 15 | 7.2 % | 2,711 m |
| 16 (partial) | 7.3 % | 2,759 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Bonneval-sur-Arc 13.2 km · 7.4 %
Frequently asked questions
How long is the climb to Col de l'Iseran?
The hardest climb of Col de l'Iseran, from Val-d'Isère, is 15.7 km long for 915 m of ascent, i.e. 5.8% average.
What is the steepest part of Col de l'Iseran?
The steepest 500 m sits at 9.9%, and the hardest kilometre is the 12th, at 7.4%.
How long does it take to climb Col de l'Iseran from Val-d'Isère?
Col de l'Iseran from Val-d'Isère takes about 1h07 at 3.0 W/kg, i.e. 14.1 km/h on average. The page gives three levels and their assumptions.
Is Col de l'Iseran open all year round?
Fermé l'hiver. La route du col est déneigée au printemps et rouvre en général entre fin mai et fin juin selon l'enneigement — vérifier l'état de la route avant de partir.
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