4.0
(24)
276
riders
20
rides
Mountain biking around Fago offers diverse terrain within the Pyrenean foothills. The region is characterized by its natural parks, including the Parque Natural de los Valles Occidentales, featuring river valleys and mountainous landscapes. Riders can expect a mix of forest paths, open valley sections, and ascents through varied elevations. The area provides a natural setting for mountain biking, with routes traversing both established trails and more rugged paths.
Last updated: July 2, 2026
4.6
(7)
42
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
13
riders
35.0km
04:12
1,450m
1,450m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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12
riders
26.0km
03:21
1,370m
1,370m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5
riders
13.8km
01:33
450m
450m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(1)
4
riders
25.8km
02:38
750m
750m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Burgui is the starting point in the lower or southern part of the Roncal Valley, which ends in Belagua, at the foot of the Piedra de San Martín. It is a very pretty and peaceful village, with all kinds of services for staying for a few days and using it as a starting point for the various cycling excursions in the area. It is also highly recommended to reach Burgui via the road from Salvatierra de Esca, following the course of the Esca River through the Esca Gorge.
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Good introductory hike... only about 200 meters in elevation, beautiful scenery.
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It is a gorge that allows access to the Oza Valley. Its entire route is spectacular. It is a MUST of the Pyrenees, both for the tranquility of the area, for its landscapes, and for the beauty of the route with the river next to it. One of my discoveries this year. The climb is very steep, with some ramps, but always very easy, which allows you to enjoy the gorge even more.
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Great view at the summit of Agua Tuertas pista. There is an unguarded shelter before the Agua Tuertas section in which you can rest for the night, with tables, chairs and even a cheminée.
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Beautiful road that runs through the spectacular Foz de Burgui Nature Reserve
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A picturesque village located on the banks of the Ezka River and at the gateway to the Foz de Burgui Nature Reserve, a wonderful place that can be crossed by driving along the road parallel to the river.
3
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The valley that takes the road to the refuge of Aguas Tuertas, in its last meters, appears a zig-zag, with a slope, before reaching the refuge. Once there, the views towards both sides are spectacular, especially the Humedal de Aguas Tuertas where immense meanders occupy the foot of the valley.
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One of the most special places in the Western Valleys, where the Aragón Subordán River forms sinuous meanders that run through the extensive plain. Remember that the regulations of the Natural Park do not allow you to leave the trails with the bikes or ride them in those areas marked by signage.
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The Fago region, nestled in the Pyrenean foothills, offers diverse terrain within natural parks like the Parque Natural de los Valles Occidentales. You'll encounter a mix of forest paths, open river valleys, and ascents through varied elevations, providing a natural setting for mountain biking.
While Fago primarily features moderate to difficult mountain bike trails, some moderate routes might be suitable for families with older children or beginners looking for a challenge. For instance, the La Sierra – Puerto las Coronas loop from Burgui / Burgi is a moderate 8.5-mile (13.7 km) trail that takes about 1 hour 33 minutes to complete.
Given its location in the Pyrenean foothills, the best time for mountain biking in Fago is typically from late spring through early autumn (May to October). During these months, the weather is generally more stable, and trails are less likely to be affected by snow or heavy rain, offering optimal riding conditions.
Yes, Fago offers several excellent loop trails. A challenging option is the Achar of Aguas Tuertas – Aguas Tuertas Valley loop from Borda de Catarecha, a 21.7-mile (35.0 km) difficult path. Another is the Castillo d'Acher – Achar of Aguas Tuertas loop from Parking de la Mina, which is 16.1 miles (25.9 km) and also difficult.
The mountain bike trails around Fago cater to experienced riders, with 9 moderate and 10 difficult routes available. There are no easy trails listed, so riders should be prepared for varied ascents, descents, and technical sections.
Many routes traverse the Parque Natural de los Valles Occidentales, offering scenic views. You might encounter stunning lakes such as Ibón de Acherito or Estanés Lake. Mountain passes like Somport Pass and viewpoints like Achar of Aguas Tuertas also offer breathtaking vistas.
Trail durations vary significantly based on difficulty and distance. Moderate routes, like the Parque Natural de los Valles Occidentales – Aguas Tuertas desde Selva de Oza (R1-Oza), can take around 2 hours. More challenging and longer routes, such as the Monastery of Siresa – Hecho Village loop from Borda Chiquin, can extend to over 6 hours.
The mountain bike routes in Fago are highly rated by the komoot community, with an average score of 3.8 stars. Riders frequently praise the natural park landscapes, the beauty of the river valleys, and the varied elevation changes that make for engaging and challenging rides.
Yes, advanced riders will find several challenging options. The Monastery of Siresa – Hecho Village loop from Borda Chiquin is a particularly long and difficult route, covering 46.8 miles (75.3 km) with significant elevation changes. The Achar of Aguas Tuertas – Aguas Tuertas Valley loop from Borda de Catarecha is another difficult option at 21.7 miles (35.0 km).
There are nearly 20 mountain bike trails available around Fago, offering a range of moderate to difficult options for riders to explore the Pyrenean foothills.
While the focus is on natural landscapes, some routes pass near historical sites. For example, the challenging Monastery of Siresa – Hecho Village loop from Borda Chiquin includes the Monastery of Siresa, offering a glimpse into the region's heritage amidst your ride.


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