Portillo de la Sía

Cantabria, Spain

Gradient:

<4%

4–7%

7–10%

10–12%

>12%

Approach route

APPROACH ROUTES

Portillo de la Sía

from Cañedo

CAT 1

Distance

8.4km

Elevation

558m

Avg %

6.7%

Max %

11.6%

<4%4–7%7–10%10–12%>12%

Portillo de la Sía

from Las Machorras

CAT 2

Distance

7.4km

Elevation

413m

Avg %

5.6%

Max %

11%

<4%4–7%7–10%10–12%>12%

Portillo de la Sía is a Category 1 ascent in Cantabria, Spain, topping out at 1 200 m. The Cañedo approach is the hardest — 8.4 km at 6.7%, 558 m gained, maxing at 11.6%. The steepest kilometre averages 10.0%, around km 7.5. It can also be climbed from Las Machorras (7.4 km at 5.6%): 2 measured approaches in all, each profiled kilometre-by-kilometre against Copernicus GLO-30 elevation data. On the Fiets scale it rates 3.9. Late spring through autumn offers the most reliable conditions on the pass.