Bisaurri Forests Trail

The estimated completion time for this mountain biking route ranges from 2 hours 15 minutes to 4 hours, depending on your pace and experience level.

This trail is generally rated as having a moderate physical and technical difficulty. While some sections feature gentle ups and downs, riders should be prepared for technical sections, especially on descents, where dismounting might be necessary. It's not typically recommended for absolute beginners.

This is a circular loop trail, starting and ending in Castejón de Sos.

The trail starts from Castejón de Sos. As it's a popular mountain biking hub and part of the Puro Pirineo center, parking should be available within the village, though specific parking areas are not detailed in the trail information.

The terrain is varied, winding through diverse Pyrenean forests. Approximately 44% of the route is asphalt, 20% consists of unpaved tracks or fire roads, and 36% is traditional singletrack pathways. You'll encounter a mix of surfaces, including a technical descent from Gabás to El Run and sections with gentle ups and downs.

Along the route, you can experience deep immersion in wild Pyrenean forests with pines, boxwoods, birches, centenary oaks, and ashes. Notable points include the Waterfall of the Barranco de Liri, the Gabás - El Run Green Tunnel, and the charming village of Castejón de Sos. The trail also passes through several other villages like Bisaurri, Gabás, El Run, Arasán, and Urmella, and runs alongside the Ésera River.

Yes, this route intersects with several other paths. It covers sections of the La Ribagorza. BTT. Ruta 19. Transpirenaica de Bonansa a Castejon de Sos (25%), Castejón de Sos - Bisaurri - Urmella - Arasán (24%), and Castejón de Sos - Arasán - Liri - Sos - Castejón de Sos (19%) trails, among others.

While the trail passes through natural areas and villages, specific regulations regarding dogs are not provided. It's generally advisable to keep dogs on a leash, especially in areas with wildlife or near livestock, and to carry waste bags.

No, there are no specific permits or entrance fees required to ride this mountain biking route, as it is part of the publicly accessible Puro Pirineo network.

Yes, there are water points available in the villages of Arasán and Bisaurri, which are along the route.

This trail is recommended for year-round riding, offering different experiences depending on the season. However, always check local weather conditions, especially for snow in winter or extreme heat in summer, before heading out.

Yes, there is an alternative, shorter route known as the Montisiello variant (signaled as 1a, red). This variant offers a direct and entertaining descent from Bisaurri to Castejón de Sos, featuring tight curves through the forest.