4.6
(778)
3,954
hikers
200
hikes
Hiking around Añarbeko urtegia offers diverse landscapes centered around the largest reservoir in Gipuzkoa. The region is characterized by extensive native forests, including significant oak and beech groves, which are part of the Aiako Harria Natural Park. Elevated points like Urdaburu Summit and Aldura Mountain provide panoramic views of the surrounding area. The terrain features well-preserved woodlands and water-related features, ensuring a verdant environment for exploration.
Last updated: May 28, 2026
3.93km
01:16
110m
120m
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.
4.5
(2)
15
hikers
10.1km
03:28
430m
420m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4
hikers
7.76km
02:27
290m
290m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(3)
19
hikers
13.4km
04:09
480m
480m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
13
hikers
12.9km
04:19
580m
580m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
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Small rail that can be used as a shelter. Inside there are some benches and tables and it also has a fireplace.
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On this part of the trail, to your right, in the woods, there is a rock of gigantic proportions. Dans cette section, à votre droite, dans la forêt se trouve un rocher de proportion titanesque. On this section, to your right, in the forest, is situated a rock of gigantic proportions.
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A slight detour from the GR 121 allows you to reach the top of Mount Urdaburu, 600 meters high. From the top the views are fantastic.
2
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The Otraiz hut is a free refuge that has a couple of picnic areas.
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The Lizarregi pass is located at a height of 365 meters and offers beautiful panoramic views.
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It has magnificent views of the entire Donostialdea area and its surroundings
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There are over 200 hiking routes around Añarbeko urtegia, catering to a wide range of abilities. You'll find everything from easy strolls to more challenging ascents, allowing you to explore the diverse landscapes of the region.
The terrain around Añarbeko urtegia is quite varied. You can expect well-preserved native forests, including significant oak and beech groves, as well as paths that lead along the expansive reservoir. Some routes also involve mountainous terrain, offering ascents to elevated points like Urdaburu Summit and Aldura Mountain.
Yes, Añarbeko urtegia offers a selection of easy paths suitable for families. Out of over 200 routes, 28 are categorized as easy, providing gentle walks through the lush environment without significant elevation gain. These are perfect for casual strolls and enjoying nature with children.
Hikers can discover several natural attractions and enjoy panoramic views. The Malbazar hut – Mount Aldura loop from Aizpitarte, for instance, leads to Mount Aldura, which is renowned for its magnificent 360-degree views of the Donostialdea area. You can also find routes that lead to Urdaburu Summit, offering similar elevated perspectives. The Añarbe forest itself, with its ancient oak and beech trees, is a significant natural highlight.
Yes, many of the trails around Añarbeko urtegia are designed as circular routes, allowing you to start and end at the same point. Examples include the Collado de Lizarregi – Refugio Pagotzarte loop from Urdaburu and the Malbazar Pond – Malbazar hut loop from Aizpitarte, which takes you through the beautiful Añarbe forest.
Añarbeko urtegia experiences high annual precipitation, ensuring a lush and verdant environment year-round. While hiking is possible in most seasons, spring and autumn often offer pleasant temperatures and vibrant scenery. Summers are generally mild, and even in winter, the trails can be beautiful, though appropriate gear for wet conditions is advisable.
The hiking routes in Añarbeko urtegia are highly rated by the komoot community, with an average score of 4.6 stars from over 750 reviews. Hikers often praise the well-preserved natural environment, the tranquility of the forests, and the diverse landscapes that make each trail unique.
Beyond the reservoir itself, the region is known for offering 'waterfall hikes,' providing scenic beauty and varied terrain. While specific named waterfall trails are not detailed, the high annual precipitation ensures that water features are a common and beautiful aspect of the landscape, especially within the lush Añarbe forest.
While specific parking locations for every trailhead are not detailed, the area around Añarbeko urtegia is generally accessible for hikers. It is advisable to check individual route descriptions on komoot for specific parking information related to your chosen starting point.
Information regarding direct public transport access to all trailheads around Añarbeko urtegia is limited. While the reservoir is a significant regional feature, it's often more convenient to access hiking starting points by car. For specific routes, checking local public transport options to nearby towns and then planning onward travel might be necessary.
Yes, Añarbeko urtegia offers challenging routes for experienced hikers. Out of over 200 routes, 44 are categorized as difficult. These often involve significant elevation gain and longer distances, such as the Otraitz Hut – Malbazar hut loop from Otraitz borda, which features over 580 meters of ascent and descent.
Generally, dogs are welcome on many outdoor trails in natural areas like Añarbeko urtegia, especially within the Aiako Harria Natural Park. However, it's always recommended to keep dogs on a leash to protect wildlife and ensure a pleasant experience for all hikers. Specific regulations might apply in certain protected zones, so always observe local signage.


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