4.8
(7)
123
riders
14
rides
No traffic gravel bike trails around Castro-Urdiales traverse a diverse landscape characterized by a rugged coastline, green mountains, and historical routes. The region features dramatic cliffs, secluded coves, and expansive beaches along the Cantabrian Sea. Inland, riders encounter green mountains with scenic forest paths and varied terrain, including Atlantic and Mediterranean vegetation. This environment provides a dynamic setting for gravel biking, blending coastal views with challenging mountain ascents.
Last updated: May 5, 2026
5.0
(1)
25
riders
49.1km
03:14
850m
850m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
30
riders
56.2km
03:27
910m
910m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
7
riders
50.5km
03:44
830m
830m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
8
riders
67.9km
05:04
1,300m
1,300m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
7
riders
38.8km
02:53
890m
890m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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.
1
0
Short and easy quiet route
0
0
An alternative climb to the road with a couple of challenging sections. The condition varies depending on the logging; by 2025, it's suitable for a gravel bike. On the way down, be careful of some water passages.
0
0
no kidding. 32 miles of this round trip of 40 miles was on gorgeous bike trails
0
0
Classic local spot with stunning panoramic views
0
0
Great cycling route to Bilbao or the coast
0
0
The detour to the mill and forge is a must 🤩
0
0
There are over 15 dedicated no-traffic gravel bike trails around Castro-Urdiales. While many are rated as difficult, offering significant climbs and distances, there are also a few moderate options for those looking for a less strenuous ride.
The no-traffic gravel trails in Castro-Urdiales offer a diverse mix of landscapes. You'll find routes that traverse green mountains, scenic forest paths, and coastal stretches. The region is known for its rugged coastline with dramatic cliffs and secluded coves, as well as inland areas with varied vegetation including beech, oak, and pine forests. Expect challenging climbs and rewarding views.
Yes, many of the no-traffic gravel routes around Castro-Urdiales are designed as loops, allowing you to start and end at the same point. For example, the El Sobaco Tunnel – A & C Tunnel Entrance loop offers a substantial circular ride through varied terrain.
Many quiet gravel routes in the region pass by or offer access to stunning natural features. You might encounter the impressive Devil's Eye, a natural rock window offering panoramic views, or the beautiful Descent to Faro del Caballo (700 Steps) leading to wild turquoise waters. The diverse coastline itself is a major highlight.
While many routes are rated difficult, the region does offer some easier options. The Greenway of the Montes del Hierro is highlighted as an exemplary cycle path with an easy-to-roll surface, connecting La Arena beach to Barakaldo, which could be suitable for a more relaxed ride. The Vía Verde del Piquillo also offers a short, scenic coastal ride.
The komoot community highly rates the no-traffic gravel trails around Castro-Urdiales, with an average score of 4.75 out of 5 stars. Reviewers often praise the challenging yet rewarding terrain, the stunning coastal and mountain views, and the sense of tranquility found on these car-free paths. The diverse landscapes and historical elements are also frequently mentioned as highlights.
Yes, gravel biking in Castro-Urdiales can easily blend physical activity with cultural exploration. The region's historical routes, including sections of the Camino del Norte, often pass by landmarks. While specific routes are not detailed here, the town itself boasts historical sites like the Santa Ana Lighthouse and Hermitage, and the Medieval Bridge, which can be incorporated into your rides.
Yes, some routes in the broader area can lead you to serene water features. For instance, the El Sobaco Tunnel – Lago de Galdames loop includes a lake, and you can find highlights like Pozo Hostión and the Lakes of the Old Iron Mines in the vicinity, offering picturesque stops.
Castro-Urdiales benefits from a mild climate, making gravel biking enjoyable for much of the year. Spring and autumn generally offer the most pleasant temperatures and lush scenery. Summers can be warm, especially inland, but coastal breezes provide relief. Winters are mild, though some higher mountain paths might be more challenging due to weather conditions.
Absolutely. Many of the no-traffic gravel routes around Castro-Urdiales are designed for experienced riders, featuring significant distances and elevation gains. Tours like the A & C Tunnel Entrance – El Sobaco Tunnel loop cover over 50 km with substantial climbing, providing a challenging and rewarding experience for those with very good fitness.
Many routes start from towns or villages like Castro-Urdiales, Putxeta, or Muskiz, where public parking is generally available. For specific trailheads, it's advisable to check the individual route details on komoot, as they often provide information on suitable starting points and parking facilities.
Yes, the region is rich with stunning viewpoints. Given its mountainous and coastal terrain, many trails offer spectacular panoramic views of the Cantabrian Sea and the green inland landscapes. The Devil's Eye is a prime example of a natural viewpoint you might encounter.


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