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Spain
Aragon
Huesca
La Jacetania

Valles Occidentales

The best walks and hikes in Valles Occidentales

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.

Best hiking trails in Valles Occidentales

  • The most popular hiking route is Ibón de Acherito Loop, a 6.7 miles (10.9 km) trail that takes 4 hours 27 minutes to complete. This route leads to a picturesque glacial lake nestled in a high mountain setting.
  • Another top favourite among local hikers is Mesa de los Tres Reyes from Linza Trail, a difficult 10.3 miles (16.5 km) path. This challenging route ascends to one of the region's prominent peaks, offering expansive views of the Pyrenees.
  • Local hikers also love the Castillo d'Acher Trail, an 8.0 miles (12.9 km) trail leading through dramatic rock formations and high mountain terrain, often completed in about 5 hours 45 minutes.
  • Hiking in Valles Occidentales is defined by majestic peaks, lush Atlantic forests, and serene glacial valleys. The extensive network of routes offers options for various ability levels, from moderate forest walks to challenging high-altitude ascents.
  • The routes in Valles Occidentales are highly rated by the komoot community with an average score of 4.6 stars from over 700 reviews. More than 7000 hikers have used komoot to explore Valles Occidentales's varied terrain.

Last updated: May 10, 2026

4.8

(56)

451

hikers

#1.

Ibón de Acherito Loop

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.

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Moderate

4.6

(23)

447

hikers

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.

Hard
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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.

Hard

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

Moderate

4.9

(8)

151

hikers

Hike the difficult Punta Bisaurin circular trail from Refugio de Lizara, covering 7.2 miles with 3595 feet of gain in 6 hours.

Hard
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Hiking Collection by

Ana- Remoteana

Tips from the Community

maria ml
November 4, 2025, Refugio de Linza

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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Max
September 17, 2025, Refugio de Lizara

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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Gonzalo
August 29, 2024, Refugio de Lizara

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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5

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Small temporary deviation from the GR, to continue towards the East.

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Frequently Asked Questions

How many hiking trails are available in Valles Occidentales?

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.

What kind of terrain can I expect when hiking in Valles Occidentales?

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.

Are there easy or family-friendly hiking options in Valles Occidentales?

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.

What are the most challenging hikes in Valles Occidentales?

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.

What natural features or landmarks can I see along the hiking trails?

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.

What is the best time of year to hike in Valles Occidentales?

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.

Are there any circular hiking routes in Valles Occidentales?

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.

What do other hikers enjoy most about Valles Occidentales?

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.

Is public transport available to reach trailheads in Valles Occidentales?

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.

Are dogs allowed on the hiking trails in Valles Occidentales?

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.

Are there any refuges or huts available for hikers in Valles Occidentales?

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.

Do I need any permits to hike in Valles Occidentales?

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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