4.3
(10)
141
riders
13
rides
Gravel biking around Aiarako kuadrilla/Cuadrilla de Ayala offers diverse topography in Spain's Basque Country, characterized by the rugged Sierra Sálvada and intricate valleys. The region features extensive meadows, rural paths, and forested areas with pine, oak, and beech. This landscape provides varied terrain for gravel routes, including challenging ascents and descents. The area is part of the Cantabrian hydrographic basin, contributing to its natural features.
Last updated: May 11, 2026
20
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(3)
13
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3.0
(1)
14
riders
25.6km
02:02
670m
670m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
50.6km
04:02
1,170m
1,170m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
17.7km
01:10
330m
330m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.8
(5)
72
riders
78.7km
04:38
1,020m
1,020m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
16.6km
01:42
680m
680m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
52.7km
04:04
890m
890m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
26.8km
02:15
710m
710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
29.7km
02:23
730m
730m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Great view from up here at the cross!
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Bridge on the cycle superhighway over the motorway junction, for cyclists and pedestrians
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Already pretty much at the end/beginning of the railway line, here it is even asphalted, before/later not anymore, but always easy to ride.
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The bridge was built in the 11th century and served as an important crossing point on the old road to Castile. It crosses the Cadagua River and is one of the city's landmarks. The bridge consists of three arches and has a Gothic tower added in the 15th century. This tower was formerly used to collect tolls.
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Amurrio was traditionally known as "El Crucero," a meeting point for routes between Castile and the Cantabrian ports. In the town center, the Ugarte Tower House (18th century), now the Cultural Center, the San Antón de Armuru Chapel (16th century), and the Church of Santa María with its 25-bell carillon, one of the largest in the Basque Country, stand out.
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Mikel Landa's training ground. The climb to La Barrerilla from Orduña is beautiful, offering a natural view of the Orduña Valley.
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Short and easy quiet route
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The region offers a diverse and challenging topography, characterized by the rugged Sierra Sálvada, intricate valleys, extensive meadows, rural paths, and forested areas with pine, oak, and beech. You'll encounter varied terrain, including significant ascents and descents, making for demanding rides.
The gravel biking routes in Aiarako kuadrilla/Cuadrilla de Ayala are primarily designed for experienced riders seeking challenging routes. All 21 available routes are rated as 'difficult' due to significant elevation gains and varied terrain.
You can experience stunning natural beauty, including the prominent Sierra Sálvada mountain range. Several routes offer views of impressive waterfalls like the Nervión Waterfall and the Delika Canyon Waterfalls. You might also catch views of Pico del Fraile or Ganekogorta Summit.
Yes, many of the gravel routes in Aiarako kuadrilla/Cuadrilla de Ayala are designed as loops. For example, you can try the challenging A & C Tunnel Entrance – El Sobaco Tunnel loop from Balmaseda, which covers 78.7 km.
The komoot community highly rates the gravel biking experience here, with an average score of 4.2 stars from over 12 reviews. Over 200 gravel bikers have used komoot to explore the varied and challenging terrain, often praising the scenic views and demanding ascents.
Yes, some routes provide excellent views towards Bilbao and its estuary. Consider the Riverside Cycle Path to Bilbao – Views of the Bilbao estuary loop from Santimami/San Mamés, a difficult 35.5 km path that follows a riverside cycle path with estuary views. Another option is the View of Bilbao and Rest Area – Hirumugarrieta Megalithic Site loop from Basarrate.
While the region is suitable for outdoor activities year-round, spring and autumn generally offer the most pleasant conditions for gravel biking, with milder temperatures and vibrant natural scenery. Summers can be warm, and winters may bring colder, wetter weather, especially at higher elevations.
Yes, the region research mentions the "Bucle del Embalse de Maroño – Vista de Amurrio desde Amurrio" as a picturesque 26.8 km trail around the Maroño reservoir, offering a scenic setting for a ride.
Given that all 21 gravel routes are rated as 'difficult' and involve significant elevation, they are generally more suited for experienced riders. For family-friendly activities or rides with dogs, you might consider the more relaxed Parque Lineal del Nervión, which is ideal for walking or less strenuous cycling, though it may not be a dedicated gravel route.
The duration varies significantly depending on the route's distance and elevation. For example, the View of Bilbao and Rest Area – Hirumugarrieta Megalithic Site loop from Basarrate (29.5 km) takes approximately 2 hours 25 minutes, while the longer A & C Tunnel Entrance – El Sobaco Tunnel loop from Balmaseda (78.7 km) can take around 4 hours 37 minutes.
Absolutely. The region is known for its challenging climbs and rewarding views. The "Bucle del Puerto de La Barrerilla – Mirador del Salto del Nervión desde Amurrio" is a difficult 52.5 km trail that features a mountain pass and panoramic viewpoints, including the impressive Salto del Nervión.


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