Col du Grand Ballon from Lautenbach
Col du Grand Ballon from Lautenbach: 25.0 km at 4.2% average and 1,049 m of climbing, up to 1,343 m.
- Distance
- 25.0 km
- Elevation gain
- 1,049 m
- Elevation loss
- 71 m
- Average gradient
- 4.2 %
- Start altitude
- 359 m
- Road
- Departmental road
- Surface
- Paved throughout
- Steepest 500 m
- 11.9 %
- Hardest 2 km
- 8.1 %
- Hardest kilometre
- km 12 · 8.7%
- Above 8%
- 3.6 km (15% of the climb)
- Difficulty index
- 4.2 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 | 1h59 | 12.6 km/h |
| 3.0 W/kg — 210 W | 1h25 | 17.6 km/h |
| 4.0 W/kg — 280 W | 1h09 | 21.9 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 | 1.9 % | 378 m |
| 2 | 2.3 % | 401 m |
| 3 | 2.5 % | 425 m |
| 4 | 3.3 % | 459 m |
| 5 | 2.8 % | 486 m |
| 6 | 3.8 % | 525 m |
| 7 | 4.3 % | 568 m |
| 8 | 5.7 % | 624 m |
| 9 | 4.4 % | 668 m |
| 10 | 8.0 % | 748 m |
| 11 | 7.0 % | 818 m |
| 12 | 8.7 % | 904 m |
| 13 | 6.2 % | 967 m |
| 14 | 0.0 % | 967 m |
| 15 | 1.4 % | 981 m |
| 16 | 6.8 % | 1,050 m |
| 17 | 8.1 % | 1,131 m |
| 18 | 4.3 % | 1,174 m |
| 19 | -0.1 % | 1,173 m |
| 20 | -0.7 % | 1,166 m |
| 21 | 3.1 % | 1,197 m |
| 22 | 0.5 % | 1,202 m |
| 23 | 2.4 % | 1,227 m |
| 24 | 3.2 % | 1,259 m |
| 25 | 7.4 % | 1,333 m |
| 26 (partial) | 10.5 % | 1,337 m |
Download the GPX track All climbs of this col
The other climbs of this col
- From Wuenheim 17.5 km · 6.0 %
- From Willer-sur-Thur 14.9 km · 6.3 %
Frequently asked questions
How long is the climb to Col du Grand Ballon?
The hardest climb of Col du Grand Ballon, from Lautenbach, is 25.0 km long for 1,049 m of ascent, i.e. 4.2% average.
What is the steepest part of Col du Grand Ballon?
The steepest 500 m sits at 11.9%, and the hardest kilometre is the 12th, at 8.7%.
How long does it take to climb Col du Grand Ballon from Lautenbach?
Col du Grand Ballon from Lautenbach takes about 1h25 at 3.0 W/kg, i.e. 17.6 km/h on average. The page gives three levels and their assumptions.
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