4.6
(131)
1,577
riders
70
rides
Mountain biking around Quirós, located in Asturias, Spain, features a mountainous terrain with significant elevation changes, including passes over 1,500 meters like Puerto de Ventana and Puerto de San Lorenzo. The landscape includes dramatic geological formations such as the Teverga and Peñas Juntas Gorges, alongside the Valdemurio reservoir. This region, part of the "Valles del Oso," offers a diverse environment for mountain bikers.
Last updated: May 3, 2026
5.0
(3)
44
riders
61.6km
05:27
1,810m
1,810m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
33
riders
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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31
riders
30.8km
02:40
680m
680m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
1
riders
28.7km
02:50
920m
920m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4.5
(24)
328
riders
35.4km
03:07
630m
630m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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It's very interesting to take a look at
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0
Very interesting to visit
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It's an ideal starting point for tours in the region. Hotels and restaurants are available. However, the bears have retreated.
2
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Quirós offers a diverse and challenging mountainous terrain. You'll encounter significant elevation changes, including passes over 1,500 meters like Puerto de Ventana and Puerto de San Lorenzo. The landscape features dramatic geological formations such as the Teverga and Peñas Juntas Gorges, alongside the picturesque Valdemurio reservoir. Trails often have mixed surfaces and varied gradients, providing both physical challenges and scenic rewards.
There are over 70 mountain bike trails available in Quirós, catering to various skill levels. The komoot community has explored more than 1,600 mountain biking adventures in the area.
Quirós offers a range of difficulty levels. While the majority of routes are classified as difficult (over 50 trails), there are also around 15 moderate and 5 easy options. The Bear's Path Greenway, for example, is known for its accessibility and suitability for various fitness levels.
Yes, the Senda del Oso (Bear Trail) is particularly well-suited for families. Built on an old mining railway line, it's mostly paved and accessible, offering a pleasant experience for riders of all ages. You can even see bears in an enclosure along the trail.
Many trails in Quirós pass by impressive natural features. You can explore the dramatic Desfiladero de Peñas Juntas, the scenic Valdemurio reservoir, and the Huerta Cave. Some routes also lead to beautiful spots like the Guanga Waterfalls or offer expansive views from mountain passes such as Ventana Pass.
Yes, the Xiblu Waterfall and Huerta Cave Loop is a great option if you're looking to incorporate waterfalls into your ride. This route offers a chance to see the Xiblu Waterfall amidst the natural beauty of the area.
The mountain bike trails in Quirós are highly rated by the komoot community, with an average score of 4.5 out of 5 stars from over 130 reviews. Riders frequently praise the diverse and scenic landscapes, the challenging climbs, and the unique experience of riding through areas like the Senda del Oso.
Yes, there are several circular routes available. A popular option is the Ventana Pass and Senda del Oso Loop, which combines challenging climbs with sections of the greenway. Another is the Peñas Juntas Gorge – Stone Bridge of Proaza loop from Villanueva.
The mountainous terrain of Quirós means that spring and autumn generally offer the most pleasant conditions for mountain biking, with milder temperatures and vibrant scenery. Summer can also be good, but be prepared for warmer weather, especially on exposed sections. Winter riding might be possible at lower elevations, but higher passes could be affected by snow or colder temperatures.
Parking is generally available in the villages and towns along the Senda del Oso, such as Tuñón, Proaza, and Villanueva. These points often serve as convenient starting points for accessing the greenway and other nearby trails.
While Quirós is nestled in a mountainous region, some public transport options might connect to the main towns or trailheads. However, services can be limited, especially for transporting bikes. It's advisable to check local bus schedules in advance if you plan to rely on public transport.
For experienced riders seeking a longer challenge, the Ventana Pass and Senda del Oso Loop covers over 61 kilometers with significant elevation gain. Another demanding option is the Virgen de Alba, Embalse de Valdemurrio, Desfiladero de Peñas Juntas, Proaza – ida y vuelta, which is nearly 40 kilometers long and features over 1200 meters of climbing.


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