50
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5
hikes
Mountaineering routes around Arbizu are situated in the scenic Sakana valley of Navarre, Spain, serving as a gateway to the Urbasa and Andía Natural Park. The region is characterized by challenging mountain peaks like Monte Beriain and the Sierra de Sarbil, featuring impressive rock faces and diverse terrain. This area offers a variety of landscapes, from demanding ascents to paths through beech forests and open plains.
Last updated: July 12, 2026
17
hikers
11.8km
05:49
970m
970m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
16
hikers
9.87km
04:57
810m
810m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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6
hikers
5.75km
02:47
540m
540m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
4
hikers
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.
5
hikers
21.4km
07:35
880m
880m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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From one of the access parking lots.
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Right next to the famous San Donato hermitage.
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The Lareo reservoir is a small reservoir in a beautiful environment. The sheet of water creates a beautiful visual game with the dense forest that surrounds it.
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This spectacular path through the beech forest is just a small sample of the incredible beauty of Aralar. The path runs pristine under the forest and, in some sections, looks out like a balcony from the cliffs.
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The route connects again with the PR-NA 201 at the milestone where the Vertical Kilometer appears on the right, continuing straight through the panoramic mountain meadow to the popular hermitage of San Donato. Part of the sanctuary is converted into a mountain refuge and is delicious when there is a blizzard or bad weather, as was the case the day we did the route. The geodesic vertex of Beriain is next door, on the rocky tip of a cliff that concentrates the kingdom of abysses and cliffs that float above the towns of the Sakana.
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Artificial lake going up the Sierra de Aralar.
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The Lareo reservoir is located in the Aralar Natural Park, near the border with Navarra. It is a small swamp and is surrounded by beech and larch trees, which take on bright colors in the fall. The tour starts from the Parketxe de Lizarrusti interpretation center.
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The Labeo dolmen is located near Lareoko urtegia, and Malkorburu. Of religious or funerary origin, it belongs to the Neolithic, Chalcolithic-Eneolithic and Bronze periods.
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There are 5 mountaineering routes detailed in this guide, all offering unique experiences in the scenic Sakana valley and Urbasa and Andía Natural Park. The region is known for its challenging mountain peaks and diverse terrain.
The routes listed in this guide are primarily rated as difficult. However, the region offers a variety of trails, and while this guide focuses on more challenging mountaineering, you might find some moderate options like the Larrunarri - Txindoki loop from Amezketa or the Amezti loop from Amezketa, which still require a good level of fitness but are less demanding than the most difficult ascents.
The best time for mountaineering in Arbizu generally depends on the specific route and conditions. Spring and autumn offer pleasant temperatures and vibrant scenery, making them ideal. Summer can be warm, especially at lower altitudes, while winter mountaineering is possible but requires appropriate gear and experience due to snow and ice conditions, particularly on higher peaks like Monte Beriain.
Yes, many of the mountaineering routes around Arbizu are circular, allowing you to start and end at the same point. Examples include the challenging Beriain loop from Uharte Arakil, which ascends Monte Beriain, and the Sierra de San Donato loop from Ergoiena, offering rugged terrain and panoramic views.
The mountaineering routes around Arbizu pass by several notable natural attractions and landmarks. You can encounter impressive geological features like the Portupekoleze Arch, ancient forests with Ancient Oak Trees, and serene bodies of water such as the Lareo Reservoir. Many routes also lead to significant summits like San Donato Summit, often crowned with hermitages like the Ermita de San Donato, offering expansive views.
Parking availability varies by trailhead. Many routes, especially those starting from villages or popular access points like Lizarrustiko lepoa, typically have designated parking areas. It's advisable to check specific route details on komoot for information regarding parking at your chosen starting point.
While Arbizu itself has some public transport connections, reaching specific mountaineering trailheads can be challenging without a car, as many are located in more remote natural areas. Some routes might be accessible via local bus services to nearby towns, but direct access to all trailheads via public transport is limited. Planning ahead and checking local bus schedules is recommended.
The mountaineering routes in this guide are generally rated as difficult or moderate, making them more suitable for experienced hikers. For families with younger children or those seeking easier walks, the broader Urbasa and Andía Natural Park offers a variety of less strenuous hiking trails, including routes through plains and greenways, which might be more appropriate than the challenging ascents featured here.
Generally, dogs are permitted on trails in the Urbasa and Andía Natural Park and surrounding areas, but it's crucial to keep them on a leash, especially in natural parks, to protect wildlife and ensure the safety of other hikers. Always check local regulations or signage at specific trailheads, as rules can vary.
For general mountaineering and hiking on established trails in the Urbasa and Andía Natural Park, permits are typically not required. However, if you plan to engage in specific activities like rock climbing in designated areas or access private lands, it's always best to verify with local authorities or park management for any specific requirements.
The terrain around Arbizu is highly varied, ranging from challenging mountain ascents with significant elevation gain, such as those found on Monte Beriain, to paths through dense beech forests and open plains. You can expect rugged, rocky sections, especially on higher peaks, and potentially muddy or uneven ground in forested areas, particularly after rain.
Given the varied terrain and potential for changing weather, it's essential to wear appropriate layers, including moisture-wicking base layers, insulating mid-layers, and a waterproof and windproof outer shell. Sturdy hiking boots with good ankle support are crucial, as are a backpack with water, snacks, a map, compass or GPS, and sun protection. Depending on the season, consider bringing gloves, a hat, and trekking poles.


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