Col de Portes
from Sault-Brénaz · Jura, France
Gradient:
<4%
4–7%
7–10%
10–12%
>12%
GRADIENT PROFILE
<4%4–7%7–10%10–12%>12%
Km-by-km average gradient from Copernicus GLO-30 elevation data along the road.
Starting in Sault-Brénaz, this side runs 9.8 km at 5.9% average — 581 m up to the 1 010 m summit, maxing at 14.6%. Its steepest kilometre averages 11.5% near km 2.5. On the Fiets scale this side rates 3.5. It is the tougher of the climb's two approaches.
Surface
Asphalt100%
Gravel0%
Verified from OpenStreetMap surface data along the climb.
FROM SAULT-BRÉNAZ
Distance
9.8km
Elevation gain
581m
Avg gradient
5.9%
Max gradient
14.6%
Summit
1010m
Category
CAT 1