4.6
(1361)
10,953
hikers
117
hikes
Hiking trails around Aizkorri-Aratz parke naturala/Parque Natural de Aizkorri-Aratz traverse a diverse landscape featuring the highest massifs in the Basque Country, including peaks like Aitxuri (1,551 m) and Aizkorri (1,544 m). The region is characterized by a spectacular limestone karst landscape, dense beech and oak forests, and expansive Urbia Grasslands dotted with ancient dolmens. This second-largest protected area in the Basque Country offers varied terrain from high mountain flora to deep ravines, providing a range of experiences for hikers.
Last updated: July 7, 2026
4.8
(25)
185
hikers
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.5
(35)
107
hikers
7.64km
02:21
250m
250m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4.8
(4)
39
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
4.0
(3)
29
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(1)
19
hikers
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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A delightful summit, and the final arrival is not complicated, despite the karst.
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A delightful summit, and safe on the way up, despite the karst.
1
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This year with the heavy rainfall, some mud and water obstacles are a challenge or a lot of work to clean the shoes 😁
0
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One of the highest points in the Basque Country, let yourself be enveloped by the fog and it will seem like a magical place.
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This walk is beautiful but we did it in April and it was very wet and slippery. There was a part with lots of stones and mud and leaves where you sank half a meter. Not very steep until the sanctuary. There we had to zigzag very steeply up the rock. Better to walk up than down but that part is strenuous and not average.
2
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You can climb on foot, gravel and MTB.
0
0
A place to remember, a joy to visit.
4
0
Aizkorri-Aratz Natural Park offers a diverse range of landscapes, from the highest massifs in the Basque Country, including peaks like Aitxuri (1,551 m) and Aizkorri (1,544 m), to spectacular limestone karst formations. You'll also find extensive beech and oak forests, such as the monumental Iturrigorri beech forest, and the expansive Urbia Grasslands dotted with ancient dolmens. The park's topography includes deep ravines and high mountain flora, providing varied scenery for every hike.
Yes, Aizkorri-Aratz Natural Park offers several easy routes. While many trails are moderate to difficult, there are 7 routes classified as easy. These typically involve less elevation gain and shorter distances, making them suitable for a more relaxed outing or for families with children. Look for paths that traverse the lower forest areas or the gentler sections of the Urbia Grasslands.
The park is rich in natural and historical landmarks. You can explore the historic San Adrián Tunnel, which was part of the Camino Real and Way of St. James. The Aizkorri Summit (1,523 m) and Aratz Summit (1,445 m) offer breathtaking views. Don't miss the Sanctuary of Arantzazu, perched over a deep gorge, which is a significant architectural and cultural site.
Yes, the park features many excellent circular hiking routes. One popular option is the Circular hike from Urkulu reservoir, which leads through scenic reservoir areas and surrounding forests. Another is the challenging Aizkorri via the San Adrián pass, offering stunning views of the Aizkorri massif.
The best time for hiking in Aizkorri-Aratz Natural Park is generally from spring to autumn (April to October). During these months, the weather is milder, and the trails are more accessible. Spring brings vibrant flora, while autumn showcases stunning fall foliage in the extensive beech and oak forests. Winter hiking is possible but requires appropriate gear and experience due to snow and potentially challenging conditions in higher elevations.
Absolutely. Aizkorri-Aratz Natural Park is home to the highest massifs in the Basque Country, offering numerous challenging routes. For instance, the Aratz and the integral cordal of the Montes de Altzania route is a difficult 12.2 km trail with significant elevation gain, ideal for experienced hikers seeking a strenuous adventure.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 400 reviews. Reviewers often praise the park's diverse terrain, from high mountain peaks to extensive beech forests, and the unique limestone karst formations. Many appreciate the well-maintained trails and the sense of immersion in nature, along with the historical and cultural points of interest like the San Adrián Tunnel.
While specific public transport routes directly into all trailheads can be limited, visitor centers in Araia, Zegama, and near the Arantzazu Sanctuary can provide more detailed information on local transport options. For those traveling by car, parking facilities are available at various popular starting points, including near the Urkulu reservoir and the Arantzazu Sanctuary, making many trails accessible.
Many trails in Aizkorri-Aratz Natural Park offer spectacular viewpoints, especially those leading to higher elevations. The routes ascending to peaks like Aizkorri Summit or Aratz Summit provide panoramic vistas of the surrounding Basque Country. The Urbia Grasslands also offer expansive, open views, particularly at sunrise or sunset.
Generally, dogs are permitted on hiking trails within Aizkorri-Aratz Natural Park, but it's crucial to keep them on a leash to protect wildlife and ensure the safety of other hikers. Always check for specific signage at trailheads, as some sensitive areas or protected zones might have restrictions. Remember to carry water for your dog and clean up after them.
There are over 120 hiking routes documented in Aizkorri-Aratz Natural Park, catering to a wide range of abilities and preferences. This extensive network ensures that whether you're looking for a short, easy stroll or a multi-hour challenging ascent, you'll find a suitable path to explore the park's diverse natural beauty.


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