Sierra de la Filera Peaks Loop

This trail is rated as difficult on komoot, covering over 16 kilometers with an elevation gain of approximately 625 meters. While some sections are described as uncomplicated under good visibility, the descent from Peña Negra can be challenging due to extensive and high vegetation, potentially requiring some off-trail navigation.

The estimated duration for completing this circular hike is around 5 hours and 6 minutes, though this can vary based on your pace, breaks, and weather conditions.

The trail starts from the picturesque village of Abelgas de Luna. You should be able to find parking within the village itself, which serves as the primary access point for this route.

The trail features diverse terrain, starting from Abelgas de Luna at around 1300 meters and ascending into the Sierra de la Filera mountain range. You'll traverse a ridge connecting Peña Blanca and Pico Filera, experiencing a progressive climb. The landscape includes rough limestone mountain ridges, open high pastures, and potentially dense vegetation, especially on descents.

Along the route, you'll encounter several notable points. These include the Path from Abelgas to Mallo, near the Cuartero stream, Collado La Viesca, and Collado del Remansadero. From Pico Filera, the highest point at 1873 meters, you'll get exceptional panoramic views of the Cantabrian Mountains, the valleys around Abelgas de Luna, and often the Luna River reservoir in the distance.

The Babia y Luna Natural Park is a UNESCO Biosphere Reserve known for its rich biodiversity. You might see lush vegetation including oaks, gall oaks, beeches, birches, and numerous endemic plant species. The park is also home to diverse wildlife, such as the Cantabrian brown bear, the elusive Iberian desman, and various birds like the Egyptian vulture and peregrine falcon.

Given the 'high mountain landscape' feel and potential for challenging conditions, the best time to hike this route is typically during the warmer, drier months, from late spring through early autumn. This avoids snow and ice, and ensures better visibility and more manageable terrain.

While the Babia y Luna Natural Park generally welcomes visitors, it's always recommended to keep dogs on a leash to protect local wildlife and livestock, especially in a UNESCO Biosphere Reserve. Be prepared for varied terrain and potential encounters with dense vegetation.

As of current information, there are typically no specific permits or entrance fees required for day hiking on established trails within the Babia y Luna Natural Park. However, it's always a good practice to check with local tourism offices or park authorities for any updated regulations before your visit.

For this challenging hike, you should bring appropriate hiking boots, layers of clothing suitable for mountain weather, plenty of water, snacks, a map or GPS device (like komoot's app) for navigation, and sun protection. Trekking poles can be very helpful, especially for the descents through potentially dense vegetation.

This is a circular route, meaning you will start and end in Abelgas de Luna, completing a full loop through the various peaks and passes mentioned in the trail name.