4.6
(364)
3,121
riders
162
rides
Mountain biking around Mallabia offers a diverse landscape characterized by its strong rural essence, with green meadows and picturesque valleys. The region is situated at the foothills of Oiz Mountain, a prominent natural landmark, providing varied terrain for mountain bikers. The Debabarrena BTT Center, located nearby, enhances the experience with access to well-signposted routes for all skill levels.
Last updated: June 20, 2026
5.33km
00:27
100m
100m
This easy 3.3-mile mountain bike route circles the Ariola reservoir, offering tranquil waters and woodland views in the Debabarrena region.
4.4
(5)
36
riders
24.4km
02:14
560m
560m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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25
riders
73.6km
04:24
670m
670m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
18
riders
40.2km
02:49
630m
630m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
7
riders
61.4km
05:37
1,590m
1,590m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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Beautiful views . A few minutes from the parking lots
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The chapel is dedicated to Saint Ignatius of Loyola. It is known for its modern, triangular architecture.
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Nice views of the Anboto ridge
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Located in the Duranguesado region, the town of Ermua is known for its rich history and its beautiful natural landscape. Here you can enjoy the local gastronomy. The town's name may come from the Basque term Emuas, which means border area or terrain, due to its location on the dividing line between the provinces of Vizcaya and Guipúzcoa.
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Ermua is a medieval town located on the border between Vizcaya and Guipúzcoa. Located in the narrow valley of the Ego River and surrounded by mountains, this town has an interesting historical heritage, among which several palaces stand out.
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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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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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Mallabia and its surrounding area offer over 170 mountain bike trails, catering to all skill levels. These include 4 easy routes, 85 moderate, and 82 difficult trails, many accessible through the nearby Debabarrena BTT Center.
Yes, Mallabia has several family-friendly mountain bike trails. The Aixola Reservoir Loop is an easy 3.3-mile route with tranquil waters and woodland views, suitable for all skill levels.
While specific regulations for dogs on mountain bike trails in Mallabia are not universally posted, generally, dogs are welcome on trails in the Basque Country if kept under control, especially around livestock or wildlife. Always ensure your dog is well-behaved and respect local signage.
You can expect a diverse landscape ranging from verdant meadows and picturesque valleys to the foothills of Oiz Mountain. Trails vary from smooth paths around reservoirs to challenging ascents with significant elevation gain, offering woodland views and panoramic vistas.
For experienced riders seeking a challenge, the Pol-Pol Fountain – Besaide Monument loop from Ermua is a hard 38-mile route with over 1500 meters of elevation gain, requiring very good fitness and advanced skills. Some sections may even require pushing your bike.
Yes, many trails in the Mallabia area are designed as loops. Examples include the easy Aixola Reservoir Loop, the moderate Ariola Lake Trail – Areitio Climb loop from Ermua, and the more demanding Aixola Dam – Ariola Lake Trail loop from Errotabarri.
The best time for mountain biking in Mallabia is generally during the spring and autumn months when the weather is milder and the landscapes are lush. Summers can be warm, and winters may bring cooler temperatures and potentially more rain, though the region is accessible year-round.
Mallabia's trails offer access to stunning natural beauty and historical sites. You might encounter the tranquil Aixola Reservoir, ascend towards Oiz Mountain for panoramic views, or pass by the historic Artzubi Bridge, a 16th-century Romanesque structure. Other notable points include the Balcón de Bizkaia Viewpoint and various mountain passes like Alto de Muniketa (Montecalvo).
Parking availability varies by trailhead. For routes like the Aixola Reservoir Loop, you can typically find parking near the reservoir itself. For other trails, parking may be available in nearby towns such as Ermua or Zaldibar, which serve as starting points for several routes.
Mallabia, with its strong rural character, offers local cafes and accommodation options. You'll find places to refuel and rest in the main neighborhood of Areitio and surrounding villages. The nearby Debabarrena BTT Center also provides facilities like changing rooms and showers.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 350 reviews. Reviewers often praise the diverse terrain, from green valleys to challenging mountain ascents, and the well-signposted routes that cater to all abilities.
While Mallabia has a rural setting, public transport options exist to reach the general area. However, direct access to specific trailheads via public transport might be limited. It's advisable to check local bus schedules for connections to Mallabia or nearby towns like Ermua, from where some trails are accessible.


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