El Sierro: Hiking the Remote Peaks of Asturias

Why Visit El Sierro

El Sierro rises in the western Cantabrian Mountains of Asturias, offering hikers a quieter alternative to the busier Picos de Europa. Its slopes feature ancient oak and beech woods, open pastures, and rocky summits with long-distance views across the Narcea valley and into León. The mountain forms part of the Fuentes del Narcea, Degaña e Ibias natural park, a protected area known for its biodiversity.

How to Get There

Most visitors base themselves in the village of Degaña or the small town of Cangas del Narcea. From Cangas, a paved road leads toward the park entrance; continue on forest tracks to trailheads near the village of Cerredo. Public transport is limited, so a rental car or arranged transfer is essential. The final approach involves narrow, winding roads that require careful driving, especially after rain.

Best Time to Visit

Late spring through early autumn provides the most reliable conditions. May and June bring wildflowers and flowing streams, while September and October offer clear skies and fewer insects. Snow can linger on north-facing slopes into May, and winter visits demand ice axes and experience. Summer afternoons often bring thunderstorms, so early starts are advisable.

Trails and Activities

The main route to the summit follows a steady climb through mixed woodland before emerging onto open ridges. Expect a round-trip hike of six to eight hours from the lower trackheads, with some sections steep and rocky. Side paths lead to seasonal shepherd huts and viewpoints over the valley. Birdwatchers may spot golden eagles and griffon vultures, while patient observers have chances of seeing Cantabrian brown bears in the surrounding park. Bring binoculars and maintain a respectful distance from wildlife.

Flora, Fauna and Local Culture

Lower slopes support dense Atlantic forests rich in chestnuts and ferns. Higher ground transitions to heather and grasses grazed by Asturian cattle. Traditional brañas, or summer pastures, dot the landscape with stone corrals still used by local herders. Respect these working sites by staying on marked paths and leaving gates as found.

Practical Considerations

Facilities are minimal above the villages. Carry all water and food, and pack layers for rapid weather changes. Mobile coverage is patchy on the higher slopes. Always check local weather forecasts and inform someone of your planned route before setting out.