5.0
(1)
33
riders
5
rides
Gravel biking around Nabarniz offers access to the diverse natural landscapes of the Urdaibai Biosphere Reserve. The region is characterized by high valleys, mountains, picturesque brooks, and green meadows, providing varied terrain for cycling. Extensive indigenous forests, such as the Oma and Basondo holm oak woods, contribute to the area's natural beauty and offer scenic paths. Mount Iluntzar, the highest point in the county, provides panoramic views of the reserve and the Oka River's valley.
Last updated: September 2, 2026
8
riders
39.6km
02:34
480m
480m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
124km
09:02
2,710m
2,710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
30.3km
02:43
870m
870m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
28.4km
02:07
660m
660m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
28.6km
02:27
810m
810m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Nabarniz
Recreation of Picasso's famous painting. The original can be seen in Madrid.
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Insane new paved road with beautiful turns and views on the coast. Renown for local bikers but not too busy with cars for us around lunchtime
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Long and fast road along the ocean, perfect tarmac and very smooth to ride
4
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That is NOT A FOREST! It is a single plantation of eucalyptus. In reality it is a disaster painted green, green as hell.
1
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Lonely coastal road for cycling with a beautiful beach and bars for a break.
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Completely destroyed by the German Condor Legion in the Spanish Civil War. https://de.wikipedia.org/wiki/Luftkampf_auf_Guernica A well-worth seeing exhibition in the central square shows the horrors of the civil war. The Spanish spelling with "ue" probably goes back to Picasso.
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Wall reproduction of Picasso's painting "Guernica" exhibited at the Reina Sofía Museum in Paris.
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Picturesque village not to be missed!
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There are 5 dedicated no-traffic gravel bike trails around Nabarniz listed in this guide. These routes offer a fantastic way to explore the region's diverse landscapes away from vehicle traffic.
Nabarniz, nestled within the Urdaibai Biosphere Reserve, offers a mix of terrains ideal for gravel biking. You'll encounter high valleys, mountains, picturesque brooks, and green meadows. The trails often traverse unsealed roads, forest tracks, and quiet secondary roads, providing a varied and engaging experience.
Yes, several routes are designed as loops. For example, the challenging Lekeitio Old Town and Basilica – Lekeitio loop from Lekeitio offers a substantial circular ride, and the Guernica Mural in Gernika – Artzubi Bridge loop from Gernika also provides a great circular option for exploring the area.
The region's climate generally makes spring and autumn ideal for gravel biking, with milder temperatures and lush scenery. Summer can also be pleasant, especially in the mornings or late afternoons, but be prepared for warmer conditions. Winter rides are possible but may involve cooler, wetter weather, especially on higher elevations like Mount Iluntzar.
Absolutely! The region is known for its stunning vistas. From Mount Iluntzar, you can enjoy panoramic views of the Urdaibai Biosphere Reserve and the Oka River's valley. You might also encounter highlights like the View from San Pedro de Atxarre or the Talaia (276 m) viewpoint, offering breathtaking perspectives of the landscape.
While all routes in this guide are rated as 'difficult' due to their length and elevation, the concept of 'no traffic' inherently makes them safer for families. For a family outing, consider shorter sections of these routes or look for dedicated cycling paths in nearby towns that might offer easier terrain. Always check the route details for elevation and distance to ensure it matches your family's capabilities.
Nabarniz and its surroundings are rich in history. You could visit the Monastery of Santa María de Zenarruza, or explore Gernika, home to the iconic Guernica Mural and the historic Old Tree of Gernika (Gernikako Arbola). The Artzubi Bridge is another notable landmark you might encounter on your ride.
Yes, for experienced riders seeking a significant challenge, the Lekeitio Old Town and Basilica – Ondarroa Bay loop from Muxika is an excellent option. This route covers over 120 km with substantial elevation gain, offering a full day of demanding gravel biking through diverse landscapes.
The trails often wind through the beautiful Urdaibai Biosphere Reserve, offering glimpses of the Oka River's valley and the charming Oma brook. You'll also ride through extensive indigenous forests, such as the Oma Forest and Basondo holm oak woods, providing a truly immersive natural experience.
While specific permits for general gravel biking are not typically required, it's always important to respect the protected status of the Urdaibai Biosphere Reserve. Stick to marked trails, do not disturb wildlife, and carry out all your waste. Always check local regulations before your ride, especially if venturing into very sensitive areas.
Many of the routes start from towns like Gernika, Lekeitio, or Muxika, which typically offer public parking facilities. For example, routes like the Guernica Mural in Gernika – Artzubi Bridge loop from Gernika begin in Gernika, where you can usually find parking options. It's advisable to check specific parking availability for your chosen starting point before you head out.


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