Col du Joncin from Porte des Pierres Dorées
Col du Joncin from Porte des Pierres Dorées: 12.4 km at 4.2% average and 527 m of climbing, up to 698 m.
- Distance
- 12.4 km
- Elevation gain
- 527 m
- Elevation loss
- 38 m
- Average gradient
- 4.2 %
- Start altitude
- 210 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 10.9 %
- Hardest 2 km
- 7.7 %
- Hardest kilometre
- km 7 · 8.5%
- Above 8%
- 1.2 km (10% of the climb)
- Difficulty index
- 1.9 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 | 1h00 | 12.5 km/h |
| 3.0 W/kg — 210 W | 43 min | 17.5 km/h |
| 4.0 W/kg — 280 W | 34 min | 21.8 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 | 5.7 % | 266 m |
| 2 | 1.5 % | 281 m |
| 3 | 2.4 % | 305 m |
| 4 | 4.0 % | 345 m |
| 5 | 4.5 % | 390 m |
| 6 | 2.1 % | 410 m |
| 7 | 8.5 % | 495 m |
| 8 | 6.8 % | 563 m |
| 9 | 7.1 % | 634 m |
| 10 | 7.0 % | 704 m |
| 11 | -2.3 % | 681 m |
| 12 | 2.4 % | 705 m |
| 13 (partial) | -1.6 % | 698 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Létra 6.3 km · 6.8 %
- From Chamelet 5.7 km · 6.8 %
- From Chambost-Allières 8.2 km · 4.5 %
Frequently asked questions
How long is the climb to Col du Joncin?
The hardest climb of Col du Joncin, from Porte des Pierres Dorées, is 12.4 km long for 527 m of ascent, i.e. 4.2% average.
What is the steepest part of Col du Joncin?
The steepest 500 m sits at 10.9%, and the hardest kilometre is the 7th, at 8.5%.
How long does it take to climb Col du Joncin from Porte des Pierres Dorées?
Col du Joncin from Porte des Pierres Dorées takes about 43 min at 3.0 W/kg, i.e. 17.5 km/h on average. The page gives three levels and their assumptions.
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