Col de la Croix-de-Fer from Saint-Jean-de-Maurienne
Col de la Croix-de-Fer from Saint-Jean-de-Maurienne: 29.1 km at 5.7% average and 1,669 m of climbing, up to 2,067 m.
Opening Fermé l'hiver. Ouverture en général courant mai selon le déneigement.
- Distance
- 29.1 km
- Elevation gain
- 1,669 m
- Elevation loss
- 144 m
- Average gradient
- 5.7 %
- Start altitude
- 541 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 13.0 %
- Hardest 2 km
- 9.7 %
- Hardest kilometre
- km 24 · 10.1%
- Above 8%
- 8.8 km (30% of the climb)
- Difficulty index
- 9.1 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 | 2h56 | 9.9 km/h |
| 3.0 W/kg — 210 W | 2h02 | 14.3 km/h |
| 4.0 W/kg — 280 W | 1h36 | 18.2 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 | 2.4 % | 565 m |
| 2 | 4.2 % | 607 m |
| 3 | -0.0 % | 607 m |
| 4 | 4.7 % | 655 m |
| 5 | 3.8 % | 692 m |
| 6 | 4.0 % | 733 m |
| 7 | 8.7 % | 820 m |
| 8 | 6.6 % | 886 m |
| 9 | 9.5 % | 981 m |
| 10 | 9.7 % | 1,078 m |
| 11 | 8.7 % | 1,165 m |
| 12 | 8.1 % | 1,247 m |
| 13 | 7.1 % | 1,318 m |
| 14 | -1.9 % | 1,299 m |
| 15 | 6.5 % | 1,364 m |
| 16 | 4.9 % | 1,413 m |
| 17 | 6.3 % | 1,477 m |
| 18 | 5.7 % | 1,533 m |
| 19 | 1.6 % | 1,550 m |
| 20 | -1.3 % | 1,536 m |
| 21 | -4.6 % | 1,490 m |
| 22 | 2.0 % | 1,510 m |
| 23 | 5.3 % | 1,563 m |
| 24 | 10.1 % | 1,664 m |
| 25 | 8.3 % | 1,747 m |
| 26 | 8.8 % | 1,834 m |
| 27 | 7.3 % | 1,907 m |
| 28 | 7.9 % | 1,986 m |
| 29 | 7.6 % | 2,063 m |
| 30 (partial) | 3.5 % | 2,067 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Saint-Étienne-de-Cuines 23.1 km · 6.9 %
Frequently asked questions
How long is the climb to Col de la Croix-de-Fer?
The hardest climb of Col de la Croix-de-Fer, from Saint-Jean-de-Maurienne, is 29.1 km long for 1,669 m of ascent, i.e. 5.7% average.
What is the steepest part of Col de la Croix-de-Fer?
The steepest 500 m sits at 13.0%, and the hardest kilometre is the 24th, at 10.1%.
How long does it take to climb Col de la Croix-de-Fer from Saint-Jean-de-Maurienne?
Col de la Croix-de-Fer from Saint-Jean-de-Maurienne takes about 2h02 at 3.0 W/kg, i.e. 14.3 km/h on average. The page gives three levels and their assumptions.
Is Col de la Croix-de-Fer open all year round?
Fermé l'hiver. Ouverture en général courant mai selon le déneigement.
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