Alto de los Heros
Basque Country, Spain
Gradient:
<4%
4–7%
7–10%
10–12%
>12%
APPROACH ROUTES
Alto de los Heros is a Category 3 ascent in Basque Country, Spain, topping out at 372 m. The Artziniega approach is the hardest — 2.0 km at 8.7%, 174 m gained, maxing at 14.2%. The steepest kilometre averages 12.4%, around km 0.9. It can also be climbed from Valle de Mena (3.3 km at 5.5%): 2 measured approaches in all, each profiled kilometre-by-kilometre against Copernicus GLO-30 elevation data. On the Fiets scale it rates 1.5. Spring to autumn brings the steadiest riding, with snow possible in mid-winter.
ALTO DE LOS HEROS
Summit
372m
Approaches
2
Hardest
CAT 3
Hardest side
2.0km