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Spain
Basque Country
Gipuzkoa
Goierri
Ataun

Tour of Aralar

Hard

5.0

(1)

1

hikers

Tour of Aralar

07:24

22.0km

880m

Hiking

This difficult 13.7-mile hike in Aralar Natural Park features the Lareo Reservoir, dense forests, and views from Sarastarri Summit.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Aralar parke naturala/Parque Natural de Aralar

Waypoints

A

Start point

Parking

Get Directions

1

11.2 km

Lareo Reservoir

Highlight • Lake

Nice reservoir surrounded by a beech forest and a track that makes it very comfortable to go around it. Especially cool in the fall.

Translated by Google •

Tip by

2

12.6 km

Sarastarri Cave

Highlight • Cave

Cave of karstic origin that houses a lagoon inside, highly recommended to visit.

Translated by Google •

Tip by

3

13.1 km

Sarastarri Summit

Highlight • Summit

Summit of the Sierra de Aralar located in the natural park of the same name. In its surroundings there are a good number of cavities and caves that attract archaeologists …

Translated by Google •

Tip by

B

22.0 km

End point

Parking

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Way Types & Surfaces

Way Types

8.30 km

6.76 km

5.50 km

797 m

295 m

236 m

Surfaces

12.6 km

5.50 km

1.89 km

1.20 km

290 m

241 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (960 m)

Lowest point (210 m)

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Weather

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Monday 25 May

32°C

19°C

0 %

Additional weather tips

Max wind speed: 7.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to complete this hike?

This challenging hike, covering approximately 22 kilometers with an elevation gain of 880 meters, typically takes around 7 hours and 24 minutes to complete. Hikers should be prepared for strenuous sections and allow ample time.

What is the starting point for the trail, and is there parking available?

The trail begins at Lizarrusti Pass. This location offers an interpretation center for the Aralar Natural Park and is the primary starting point. Parking is generally available here, making it convenient for hikers arriving by car.

What is the terrain like on the Sarastarri through the Lareo reservoir trail?

The terrain is varied and demanding. You'll encounter mostly accessible paths, but also sections requiring sure-footedness. The initial part through the Lizarrusti Gorge is steep, with some vertical cuts that may require using a solitary chain as a handrail. The route includes passing through a tunnel, along a river, and through thick beech and pine forests. As you approach the Sarastarri Summit, the path can become less defined.

What are the main points of interest along the route?

This trail offers several notable points of interest. You'll pass by the beautiful Lareo Reservoir, an artificial lake integrated into the natural environment. Near the summit, you can explore the Sarastarri Cave, which is described as not dangerous and enjoyable to explore (though sufficient light is recommended). The route also features ancient megalithic monuments, including dolmens and menhirs, showcasing the region's rich history.

Is this trail suitable for beginners or families with young children?

No, this trail is classified as 'difficult' and requires 'very good fitness' and 'sure-footedness'. It is not recommended for beginners or families with young children due to its length, significant elevation gain, and challenging terrain, including steep sections and potentially less defined paths.

What is the best time of year to hike this route?

The trail is particularly beautiful in autumn when the dense beech and pine forests display vibrant colors. However, it can be hiked in other seasons too, provided weather conditions are favorable. Always check the forecast before heading out, especially given the trail's difficulty.

Are dogs allowed on the Sarastarri through the Lareo reservoir trail?

While the Aralar Natural Park generally welcomes dogs, it's crucial to keep them on a leash to protect local wildlife and livestock, and to respect other hikers. Always follow park regulations regarding pets.

Do I need a permit or is there an entrance fee for the Aralar Natural Park?

Generally, there are no specific permits or entrance fees required to hike this trail within the Aralar Natural Park. However, it's always a good idea to check the official Aralar Natural Park website or the interpretation center at Lizarrusti Pass for any updated regulations or seasonal restrictions before your visit.

Does this trail intersect with any other well-known paths?

Yes, parts of this route follow sections of the GR20 long-distance path, which is well-marked with white, red, and green markers. The trail also intersects with other local paths such as Aralarko bira and Arkaka - Lareo ibilbidea for significant portions.

What kind of wildlife might I encounter in Aralar Natural Park?

The Aralar Natural Park is home to diverse wildlife. While specific sightings are never guaranteed, you might encounter various bird species, deer, wild boars, and other small mammals. The park's rich forests and varied habitats provide a home for many creatures.

Are there any facilities like cafes or restaurants near the trailhead?

The starting point at Lizarrusti Pass, where the Aralar Natural Park interpretation center is located, may offer some basic facilities or information about nearby services. For more extensive options like cafes or restaurants, you would likely need to venture into the closest towns or villages surrounding the park.

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