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Col de Joux Plane
From Samoëns. Length and gradient from an official source; times from the climb time calculator.
- Start
- Samoëns
- 703 m
- Length
- 11.5 km
- Average gradient
- 8.5%
- Max gradient
- 11%
- Elevation gain
- 991 m
- Summit
- 1,691 m
Source: Route des Grandes Alpes, checked 15 October 2026.
South side from Samoëns. RGA gives an 11% maximum and 15% over about a hundred metres. The Morzine side on the same page is 10.7 km at 7.5% (747 m).
Time at your watts
| W/kg | Power | Time | Speed | VAM |
|---|---|---|---|---|
| 2.0 | 140 W | 1:35:34 | 7.2 km/h | 612 m/h |
| 2.5 | 175 W | 1:16:56 | 9.0 km/h | 760 m/h |
| 3.0 | 210 W | 1:04:35 | 10.7 km/h | 905 m/h |
| 3.5 | 245 W | 55:49 | 12.4 km/h | 1,047 m/h |
| 4.0 | 280 W | 49:18 | 14.0 km/h | 1,186 m/h |
| 5.0 | 350 W | 40:15 | 17.1 km/h | 1,452 m/h |
| 6.0 | 420 W | 34:19 | 20.1 km/h | 1,703 m/h |
Model estimate in calm air at steady power (Martin et al. 1998). 70 kg rider + 8 kg bike, tops position (CdA 0.358), Crr 0.0032, 15 °C, air density at the climb's mid-elevation. Mid-elevation 1,197 m (air density 1.063 kg/m³). Calculate yours / All climbs
Climb time calculator (prefilled) / All famous climbs