Pico el Arenal: Hiking Asturias’ Quiet Mountain Summit

Why Pico el Arenal Stands Out

Pico el Arenal rises in the eastern Asturian uplands, offering hikers a relatively uncrowded alternative to the busier Picos de Europa. Its rounded summit provides 360-degree panoramas that stretch from the limestone towers of the national park to the rolling green valleys of the Redes Biosphere Reserve. The mountain’s appeal lies in its accessible yet varied terrain, where ancient beech forests give way to open alpine meadows dotted with seasonal wildflowers.

Getting There

The trailhead lies near the village of Caso, reached by the AS-117 road that follows the Nalón River. Drivers park in small lay-bys beside the river before following a signed forestry track that climbs steadily. Public transport is limited; most visitors arrive by car or arrange a taxi from nearby towns such as Rioseco. The final approach to the summit is on foot only, preserving the mountain’s quiet character.

Recommended Route

The standard path begins in mixed woodland and ascends gently for the first hour before steepening through open pastures. After roughly three hours of walking, hikers reach a broad col from which the final rocky scramble leads to the summit cross. The round trip covers varied scenery without technical difficulty for fit walkers.

Best Time to Visit

Late spring through early autumn offers the most reliable conditions. Snow can linger on north-facing slopes into May, while July and August bring long daylight and reliable mountain weather. Autumn transforms the beech woods into a carpet of gold and red, though sudden mist is common. Winter visits require ice-axe and crampons and are best left to experienced mountaineers.

What to See and Do

• Observe chamois and golden eagles from the upper meadows.
• Picnic beside the small spring that emerges near the col.
• Extend the day with a side trip along the ridge toward nearby Peña del Arenal for additional viewpoints.
• Combine the hike with a visit to the cheese-producing villages of the Nalón valley on the descent.

Nearby Attractions

After descending, explore the traditional villages of Caleao and Veneros, known for their hórreos and cider houses. The nearby Lago de Ubales offers a shorter lakeside walk, while the larger town of Cangas de Onís provides access to the western Picos de Europa if you wish to extend your stay.