Col de Port from Surba
Col de Port from Surba: 15.5 km at 5.1% average and 786 m of climbing, up to 1,249 m.
- Distance
- 15.5 km
- Elevation gain
- 786 m
- Elevation loss
- 36 m
- Average gradient
- 5.1 %
- Start altitude
- 505 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 9.5 %
- Hardest 2 km
- 7.7 %
- Hardest kilometre
- km 10 · 8.3%
- Above 8%
- 2.0 km (13% of the climb)
- Difficulty index
- 3.9 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 | 1h25 | 10.9 km/h |
| 3.0 W/kg — 210 W | 1h00 | 15.6 km/h |
| 4.0 W/kg — 280 W | 47 min | 19.7 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 | 5.8 % | 562 m |
| 2 | 5.0 % | 612 m |
| 3 | 4.3 % | 655 m |
| 4 | -2.4 % | 632 m |
| 5 | 4.7 % | 678 m |
| 6 | 0.6 % | 685 m |
| 7 | 4.2 % | 726 m |
| 8 | 7.5 % | 801 m |
| 9 | 6.7 % | 869 m |
| 10 | 8.3 % | 952 m |
| 11 | 6.6 % | 1,018 m |
| 12 | 8.2 % | 1,100 m |
| 13 | 5.5 % | 1,155 m |
| 14 | 2.6 % | 1,181 m |
| 15 | 5.0 % | 1,231 m |
| 16 (partial) | 5.2 % | 1,255 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Massat 12.5 km · 5.1 %
Frequently asked questions
How long is the climb to Col de Port?
The hardest climb of Col de Port, from Surba, is 15.5 km long for 786 m of ascent, i.e. 5.1% average.
What is the steepest part of Col de Port?
The steepest 500 m sits at 9.5%, and the hardest kilometre is the 10th, at 8.3%.
How long does it take to climb Col de Port from Surba?
Col de Port from Surba takes about 1h00 at 3.0 W/kg, i.e. 15.6 km/h on average. The page gives three levels and their assumptions.
Col de Port: add this col to your collection
Sleipnir recognises the cols you cross from the GPS trace of your rides: the col ticks itself off the day you ride over it.
Create an accountFree during the beta, no card required — places are limited.
A Polar watch syncs on its own; with any other watch, import your GPX or TCX files.