Col des Prés

from Thoiry · French Alps, France

Gradient:

<4%

4–7%

7–10%

10–12%

>12%

Approach route

GRADIENT PROFILE

<4%4–7%7–10%10–12%>12%

Km-by-km average gradient from Copernicus GLO-30 elevation data along the road.

The Thoiry approach to Col des Prés covers 8.7 km at 7.0% average, 611 m of ascent to the 1 134 m summit, with pitches to 11.7%. Its steepest kilometre averages 11.3% near km 4.7. On the Fiets scale this side rates 4.4. It is the tougher of the climb's two approaches.