4.5
(51)
513
riders
30
rides
Mountain biking around Eibar offers a diverse landscape within the mountainous Basque Country. The region is characterized by a series of surrounding peaks like Arrate, Urko, and Kalamua, providing varied gradients and technical challenges. Trails often wind through forests, valleys, and open mountain areas, with picturesque water bodies such as the Aixola Reservoir and Ariola Lake. This topography supports a range of mountain biking experiences, from moderate rides to technical descents.
Last updated: May 6, 2026
4.6
(9)
79
riders
25.5km
02:04
540m
540m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(3)
32
riders
49.4km
04:17
1,180m
1,180m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

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4.3
(3)
27
riders
51.1km
03:57
910m
910m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(1)
21
riders
44.7km
03:58
1,240m
1,240m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
3.6
(5)
22
riders
16.9km
01:11
270m
270m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Edwin, I've been drinking water from that spring for over 30 years. In fact, all of us in Berriz drink water from the springs in Oiz. I'd say it's some of the best water you can drink in the Basque Country, hehe.
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There is a fountain here and the views are quite good of the valley below. I'm not sure if the water is drinkable. It probably is, but I'm not sure I'd risk it.
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The Aixola reservoir is located between the provinces of Vizcaya and Guipúzcoa. It is surrounded by a beautiful landscape made up of shady pine, oak and beech forests.
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On a clear day the views from here are very beautiful. Here is a large radio antenna with a service building next to it. There are also several trail signs pointing out your different options.
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Kurutzebakarra is the highest of the three peaks right in this area at 902 meters. There is a beautiful tree next to the peak marker and a nice field around the area.
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From the dam you have beautiful views in both directions. Looking at the lake and the mountains behind it is very nice, but looking into the small valley is also nice.
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The path around the lake is very nice. In this place you will find beautiful views of the lake and a small fountain that almost always has water.
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There are over 30 mountain bike trails around Eibar, catering to various skill levels. You'll find a mix of moderate and difficult routes, with 13 moderate and 18 difficult options.
Eibar's mountain bike trails offer a diverse landscape within the mountainous Basque Country. You can expect varied gradients and technical challenges, with routes winding through forests, valleys, and open mountain areas. Some trails are particularly well-suited for enduro riding, featuring very vertical sections.
While many trails around Eibar are moderate to difficult, requiring good fitness and advanced skills, the region does offer some options that might be suitable for families with older, experienced riders. For instance, routes around picturesque water bodies like the Aixola Reservoir can offer a more tranquil setting, though specific easy, family-friendly routes are less common in this challenging terrain.
Yes, many of the mountain bike trails around Eibar are designed as loops. For example, the Aixola Fountain – Aixola Reservoir loop from Ardantza is a popular moderate circular route, and the Aixola Dam – Ariola Lake Trail loop from Eibar offers a more difficult circular challenge.
The trails often lead to stunning natural features and viewpoints. You can ride past picturesque water bodies like the Aixola Reservoir and Ariola Lake. For panoramic views, consider routes that pass near the Balcón de Bizkaia Viewpoint, or summits like Udalaitz Peak (1,119 m) and Kalamua Summit, which offer expansive vistas of the surrounding mountains and valleys.
The mountain bike trails around Eibar are highly rated by the komoot community, with an average score of 4.5 stars from over 40 reviews. Riders often praise the diverse landscape, the challenging nature of the routes, and the scenic views, particularly around the reservoirs and from the various peaks.
Absolutely. Eibar is well-known for its challenging terrain, with 18 difficult routes available. Trails like the Kurutzebakarra Summit – Gorla Recreation Area loop from Eibar, which covers over 49 km with significant elevation gain, are perfect for experienced riders seeking demanding climbs and technical descents. The region is particularly suited for enduro mountain biking with 'endurera' descents.
Yes, several trails provide expansive views of the Basque Country. The View of Bergara loop from Eibar offers scenic vistas, and routes leading to summits like Udalaitz Peak or Kurutzebakarra Summit provide panoramic outlooks over Eibar and its mountainous surroundings.
The mountainous Basque Country offers good riding conditions through much of the year. Spring and autumn generally provide pleasant temperatures and lush scenery. While winter riding is possible, be prepared for cooler, potentially wetter conditions, especially at higher elevations. Always check local weather forecasts before heading out.
Beyond the trails themselves, the area boasts several interesting landmarks. You can find the Balcón de Bizkaia Viewpoint, the historic Hermitage of San Miguel de Arretxinaga, and the Monastery of Santa María de Zenarruza. The Alto de Karabieta pass is also a scenic point of interest.
Yes, for those looking for longer rides, Eibar offers several extensive routes. The Kurutzebakarra Summit – Gorla Recreation Area loop from Eibar is a substantial 49.3 km trail, and the Garai Village View – Mount Oiz Summit loop from Amaña is another challenging long-distance option at 44.7 km.


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