4.5
(2060)
19,312
hikers
102
hikes
Hiking in Valles Occidentales, located in the Aragonese Pyrenees, offers diverse landscapes characterized by majestic peaks, glacial valleys, and extensive Atlantic forests. The region features impressive summits exceeding 2,600 meters, such as Bisaurín, alongside U-shaped valleys and karstic formations. Lush beech, fir, and black pine forests, including the dense Oza Forest, contribute to a rich environment. Numerous high mountain lakes, known as "ibones," also dot the landscape, providing scenic resting spots.
Last updated: May 10, 2026
4.8
(56)
451
hikers
10.9km
04:27
650m
650m
Hike the moderate 6.8-mile Ibón de Acherito Loop in the Aragonese Pyrenees, featuring a pristine glacial lake and stunning mountain views.
4.6
(23)
447
hikers
16.5km
07:52
1,190m
1,190m
Hike the difficult Mesa de los Tres Reyes from Linza Trail, a 10.3-mile route with 3891 feet of elevation gain and panoramic summit views.

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4.9
(27)
324
hikers
12.9km
05:46
1,150m
1,150m
Hike the challenging 8.0-mile (12.9 km) Castillo d'Acher from la Selva de Oza, gaining 3760 feet (1146 metres) in under 6 hours.
4.6
(22)
156
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
4.9
(8)
151
hikers
11.6km
06:00
1,100m
1,100m
Hike the difficult Punta Bisaurin circular trail from Refugio de Lizara, covering 7.2 miles with 3595 feet of gain in 6 hours.
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After breakfast, it closes for a while for cleaning. Fill up your water bottle before heading up, as it's a scarce resource up there.
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No cell phone reception in or around the hut. There's a free hot shower!
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A refuge located in the Aragüés-Jasa Valley, one of the four valleys of the Natural Park declared in 2006. Located at the western end of the Aragonese Pyrenees and covering an area of 34,000 hectares, it encompasses a great diversity and richness of both fauna and geology, making it a great place for studying and practicing nature activities.
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Lizara - 1540 m Access by car Open all year 75 places Llanos de Lizara, Aragües del Puerto , La Jacetania, Huesca Tel. : 974 348 433 • rlizara@gmail.com • www.refugiodelizara.com The refuge is located at the end of the Aragüés - Jasa valley, in the Valles Occidentales Natural Park, on the so-called Lizara plain and under the imposing Bisaurín. Due to its accessibility by vehicle and its surroundings, the refuge is a magnificent point for the development of introductory activities to the different mountain sports. The Lizara refuge has been certified with ISO 14001 since October 2004, thus supporting an environmental management model. The Valles Occidentales Natural Park, where the refuge is located, was declared in 2006, in an environment that combines medium and high mountains. In winter, a cross-country track is set up on the Llano de Lizara, which is managed from the refuge itself. Certification according to ISO 14001 was a pioneering experience in Spain and the Pyrenees in terms of mountain refuges, where a model of environmental management is supported with the installation of renewable energy sources, the regular practice of selective waste collection and environmental awareness campaigns.
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The Mesa de los Tres Reyes is the highest peak in Navarra with 2444 meters. It starts from the Linza refuge, being a hard and demanding climb due to the distance (17 km round trip) and the difference in altitude (1309 meters); and the last climb to reach the top in which you inevitably have to put your hands down on a steep slope with loose stones, although it is even more impressive on the way down. But the effort is rewarded by the areas that are crossed and the views throughout the journey.
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It is best to put the bag down before climbing to the table.
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One of the "must do" summits if you live "not so far" from it.
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Small temporary deviation from the GR, to continue towards the East.
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Valles Occidentales offers a wide range of hiking opportunities, with over 100 routes documented on komoot. These trails cater to various skill levels, from moderate forest walks to challenging high-altitude ascents.
The terrain in Valles Occidentales is highly diverse. You'll encounter majestic peaks, U-shaped glacial valleys, karstic formations, and extensive Atlantic forests of beech, fir, and black pine. Many routes also feature serene high mountain lakes, known as 'ibones', and dramatic rock formations.
Yes, Valles Occidentales provides options suitable for families and those seeking easier walks. While many routes are moderate or difficult, there are 6 easy trails available. The region research mentions family-friendly options through the Selva de Oza and to Aguas Tuertas, offering accessible natural beauty.
For experienced hikers seeking a challenge, Valles Occidentales has 55 difficult routes. Notable challenging trails include the Mesa de los Tres Reyes from Linza Trail, which ascends to a prominent peak, and the Punta Bisaurín Loop from Lizara Refuge, both offering significant elevation gain and expansive views.
Valles Occidentales is rich in natural beauty and landmarks. You can explore impressive peaks like Table of the Three Kings (Hiru Erregen Mahaia) and Castillo d'Acher. The region also features lush forests such as the Oza Forest, numerous glacial lakes like Ibón de Acherito, and unique valleys like Aguas Tuertas with its striking zigzag water currents.
The region experiences a humid and cool climate, contributing to its lush environment. While specific recommendations depend on the trail, generally, late spring to early autumn (May to October) offers the most favorable conditions for hiking, avoiding heavy snow at higher elevations and enjoying the vibrant flora.
Yes, there are circular routes available. An example is the Ibón de Acherito Loop, which takes you to a picturesque glacial lake and brings you back to your starting point. Another is the Boca del Infierno – circular by the Calzada Romana and the Senda de Los Ganchos – Valle de Hecho, offering a varied experience.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 700 reviews. Hikers often praise the diverse landscapes, from majestic peaks to lush forests and serene glacial lakes, as well as the extensive network of routes suitable for various abilities.
Access to trailheads in Valles Occidentales primarily relies on personal vehicles due to the remote nature of many starting points. While some villages in the valleys might have limited bus services, direct public transport to specific trailheads is generally not extensive. Planning for car access or local taxi services is advisable.
Valles Occidentales is part of the Aragonese Pyrenees, and while many areas are dog-friendly, it's crucial to adhere to regulations, especially within the Natural Park of the Western Valleys. Dogs are generally permitted on trails but should be kept under control, often on a leash, to protect wildlife and ensure the safety of other hikers. Always check specific local signage for any restrictions.
Yes, Valles Occidentales offers several refuges and huts for hikers. Notable options include Lizara Refuge, Gabardito Refuge, and Linza Refuge. These provide essential services and accommodation, especially for longer treks or multi-day excursions in the high mountains.
Generally, permits are not required for day hiking on established trails within Valles Occidentales. However, as it is a Natural Park, certain activities like camping, lighting fires, or accessing specific protected areas might require authorization. It's always recommended to check with the park authorities for the latest regulations, especially if planning an overnight stay or off-trail exploration.


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