Col du Gerbier de Jonc from Saint-Martial
Col du Gerbier de Jonc from Saint-Martial: 12.3 km at 5.9% average and 729 m of climbing, up to 1,417 m.
- Distance
- 12.3 km
- Elevation gain
- 729 m
- Elevation loss
- 16 m
- Average gradient
- 5.9 %
- Start altitude
- 699 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 12.1 %
- Hardest 2 km
- 7.7 %
- Hardest kilometre
- km 9 · 9.2%
- Above 8%
- 2.8 km (23% of the climb)
- Difficulty index
- 4.6 Moderate
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 | 1h17 | 9.6 km/h |
| 3.0 W/kg — 210 W | 53 min | 13.9 km/h |
| 4.0 W/kg — 280 W | 41 min | 17.8 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 | 7.7 % | 776 m |
| 2 | 5.0 % | 825 m |
| 3 | 6.1 % | 886 m |
| 4 | 6.2 % | 948 m |
| 5 | 4.1 % | 989 m |
| 6 | 4.5 % | 1,034 m |
| 7 | 9.0 % | 1,124 m |
| 8 | 1.3 % | 1,137 m |
| 9 | 9.2 % | 1,229 m |
| 10 | 5.6 % | 1,284 m |
| 11 | 5.9 % | 1,343 m |
| 12 | 6.0 % | 1,403 m |
| 13 (partial) | 3.6 % | 1,413 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Saint-Pierre-de-Colombier 30.7 km · 3.8 %
- From Asperjoc (Vallées-d'Antraigues-Asperjoc) 33.4 km · 3.5 %
Frequently asked questions
How long is the climb to Col du Gerbier de Jonc?
The hardest climb of Col du Gerbier de Jonc, from Saint-Martial, is 12.3 km long for 729 m of ascent, i.e. 5.9% average.
What is the steepest part of Col du Gerbier de Jonc?
The steepest 500 m sits at 12.1%, and the hardest kilometre is the 9th, at 9.2%.
How long does it take to climb Col du Gerbier de Jonc from Saint-Martial?
Col du Gerbier de Jonc from Saint-Martial takes about 53 min at 3.0 W/kg, i.e. 13.9 km/h on average. The page gives three levels and their assumptions.
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