4.5
(2)
21
riders
3
rides
No traffic gravel bike trails around Valle de Losa offer diverse terrain for cycling. The region features a varied landscape, from lower valleys with agricultural fields to higher northern areas with pastures and forests. The Jerea river valley carves out unique geological formations, providing scenic routes. This combination of rolling lands, mountain scenery, and distinct natural features creates an ideal environment for gravel biking.
Last updated: May 20, 2026
4.5
(2)
4
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
31.2km
02:51
800m
800m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
34.5km
02:32
310m
310m
Moderate gravel ride. 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.
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Built to span the Ebro River, this stone bridge is an impressive 143 meters long and features nine arches. The central section boasts a slender defensive tower, adorned with battlements and arrow slits, added in the 14th century. In medieval times, passage was controlled from this tower: anyone wishing to cross the bridge had to pay a toll of a few maravedís. The bridge offers one of the best views of the city of Frías.
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Beautiful medieval bridge over the Ebro River with views of Frias Castle
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One of the most beautiful bridges I know.
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Impressive on the outside, but no less so on the inside.
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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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One of the most beautiful bridges in Spain
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Very nice, it would be good to equip it and promote it.
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Valle de Losa offers a diverse mix of terrain perfect for gravel biking. You'll find tracks through lower valley cereal and potato fields, leading to higher northern areas with pastures and forests. The Jerea river valley also provides scenic routes. Expect a range from smoother agricultural tracks to more challenging paths in forested and mountainous regions, including limestone karstic landscapes with caves and sinkholes.
Yes, many of the gravel routes in Valle de Losa are designed as loops, allowing you to start and finish in the same location without retracing your path. For example, you could explore the challenging Ascent to Sierra Arcena loop from Villanañe or the Frías loop from Cadiñanos, which offers a moderate challenge.
The region is rich in natural beauty and historical sites. You can ride through the dramatic cuesta relief of Montes de la Peña and Sierra Salvada, or along the unique geological formations of the Jerea River Valley. Highlights include the picturesque San Pantaleón de Losa Hermitage, perched beneath a large calcareous rock, and the 19th-century Complacera Tunnel on the ascent to Pico del Fraile. You might also encounter the source of the Jerea River near Relloso.
Absolutely! The ascent to Pico del Fraile, accessible via a wide track from Relloso, rewards cyclists with magnificent views of the neighboring Valle de Mena and nearby Álava and Vizcaya valleys. Additionally, several viewpoints are scattered throughout the region, such as Trees above the abyss and Viewpoint, offering stunning vistas.
The trails in Valle de Losa cater to a range of abilities. While some routes, like the Ribera loop from Valderejoko parke naturala, are rated as difficult due to elevation changes, there are also moderate options such as the Frías loop from Cadiñanos. The varied landscape ensures you can find a route that matches your fitness and experience level.
Yes, several routes in and around Valle de Losa offer views of beautiful water bodies. The Maroño Reservoir loop from Amurrio is a great option, taking you past the scenic Maroño Reservoir. Other notable lakes in the wider area include Arceniega Reservoir and HoyaDeSanCebutre.
The komoot community highly rates the gravel biking experience in Valle de Losa, with an average score of 4.5 stars. Reviewers often praise the region's quiet, traffic-free tracks, the stunning natural landscapes, and the opportunity to discover historical landmarks and unique geological features away from crowded roads.
Yes, Valle de Losa features extensive pine forests, providing shaded and picturesque sections for gravel biking. Routes like the 'Sendero Valle de Losa' (a local trail mentioned in regional research) traverse these areas, offering a cooler and more immersive natural experience, especially during warmer months.
Valle de Losa is enjoyable for gravel biking across multiple seasons. Spring and autumn offer pleasant temperatures and vibrant landscapes, with blooming flora or rich fall colors. Summer can be warm, but routes through pine forests provide welcome shade. Winter conditions can vary, with higher elevations potentially experiencing colder weather or snow, so checking local forecasts is advisable.
Absolutely. Valle de Losa is dotted with historical points of interest that can be easily incorporated into your gravel rides. The Romanesque San Pantaleón de Losa Hermitage is a popular starting point for routes, and the 19th-century Complacera Tunnel offers a glimpse into the region's past. You can also visit the Torre de los Verona on a loop from Villanañe, or pass by the Frías Medieval Bridge.
Yes, the region around Valle de Losa features impressive gorges and canyons. You can find routes that take you near the Purón River Gorge, offering dramatic scenery. The area is also home to the stunning Nervión Waterfall, a significant natural attraction that can be a highlight of a longer ride.


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