4.7
(67)
1,588
riders
104
rides
Touring cycling routes around Urdaibai traverse a UNESCO Biosphere Reserve in the Basque Country, characterized by its diverse landscapes. The region features the Oka River estuary with extensive salt marshes, a rugged coastline with high cliffs and sandy beaches, and low mountains with steep slopes. These varied environments include Cantabrian holm-oak woods, oak groves, and meadowland, all contributing to a unique cycling experience.
Last updated: May 10, 2026
5.0
(1)
25
riders
34.8km
02:37
790m
790m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.4
(5)
19
riders
21.1km
01:35
460m
460m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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9
riders
31.3km
02:11
590m
590m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
30.5km
02:12
620m
620m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.8
(8)
74
riders
78.8km
05:30
1,500m
1,500m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Urdaibai
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Gravel biking around Urdaibai
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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When the Condor attacked, the residents of Guernica tried to protect the tree with their bodies because it is sacred to the Basques. Even today, elected politicians have to swear their loyalty to the Basque Country at an oak tree that stands a few meters away.
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Lonely coastal road for cycling with a beautiful beach and bars for a break.
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Urdaibai is an extraordinarily beautiful and varied natural space, which is why it was declared a Biosphere Reserve by UNESCO in 1984. Its heart is the Oka River that rises on Mount Oiz and transforms into an estuary upon reaching Mundaka, creating spectacular marshes full of life. We recommend you see them at different times of the day to be able to appreciate both low and high tide. But in addition to unique marshes, Urdaibai offers you some of the most beautiful and appreciated beaches in Euskadi, Laida, which constantly varies in shape and size or the spectacular Laga beach, located under the imposing Peñón de Ogoño, which many define as “the closest thing to paradise.”
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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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Gernikako Arbola is an oak tree in the Basque city of Gernika.
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3
Urdaibai offers a diverse range of touring cycling routes. While there are over 100 routes in total, the majority, around 77, are considered difficult. There are also about 24 moderate routes and a few easier options for those seeking a less challenging ride.
Yes, while many routes are challenging, there are a few easier touring cycling routes in Urdaibai, with about 4 classified as easy. These routes often traverse charming villages and offer gentler terrain, making them suitable for beginners or families. The region's varied landscape ensures options for different ability levels.
Touring cycling in Urdaibai features incredibly diverse terrain. You'll ride through the Oka River estuary with its salt marshes, along a rugged coastline with high cliffs and sandy beaches, and into low mountains with steep slopes. The landscape includes Cantabrian holm-oak woods, oak groves, and meadowland, providing a constantly changing backdrop for your ride.
Urdaibai is a UNESCO Biosphere Reserve, rich in natural beauty. You can expect to see the extensive salt marshes of the Oka River estuary, which are crucial for birdlife, especially migratory birds. The coastline offers dramatic cliffs and beaches like Laida and Laga. Inland, you'll find Cantabrian holm-oak woods, oak groves, and various river basins. Keep an eye out for diverse bird species, particularly around the estuary.
Absolutely! Urdaibai's routes pass by many interesting sights. You can visit the historic Artzubi Bridge, the unique Oma Forest with its painted trees, or enjoy panoramic views over the Urdaibai marsh. Coastal routes might take you past the Matxitxako Lighthouse or the picturesque Santa Catalina Hermitage and Mundaka Harbor. The Old Tree of Gernika is also a significant natural monument in the area.
The komoot community highly rates touring cycling in Urdaibai, with an average score of 4.7 stars from over 60 reviews. Cyclists often praise the region's diverse landscapes, from the stunning estuary views to the rugged coastline and forested mountains. The variety of routes, passing through charming villages and offering both challenging climbs and scenic coastal loops, is also frequently highlighted.
Yes, Urdaibai offers several excellent circular touring cycling routes. For example, the Mundaka – circular via Bermeo, Busturia and the Island of Chacharramendi is a popular option that takes you through charming coastal towns. Another well-liked circular route is the Montecalvo Loop from Gernika, which explores the inland mountains and valleys.
Urdaibai is generally pleasant for touring cycling for much of the year. The spring and autumn months offer mild temperatures and beautiful scenery, making them ideal. Summer can also be good, though it might be warmer, especially inland. Winter cycling is possible, but be prepared for cooler temperatures and potentially more rainfall, particularly along the coast.
Urdaibai has several charming towns like Mundaka, Bermeo, and Gernika that are well-connected and can serve as starting points for your cycling adventures. Public transport options, including local trains and buses, often link these towns, making it possible to reach various parts of the reserve without a car. It's advisable to check local transport schedules for specific routes and bike carriage policies.
Many of the towns and villages within Urdaibai, such as Mundaka, Bermeo, and Gernika, offer parking facilities. When planning your route, consider starting from one of these larger hubs where parking is more readily available. Specific trailheads or viewpoints might also have designated parking areas, though these can be smaller.
Yes, Urdaibai is part of longer historical routes. The 'Wine and Fish Route' (GR38), a path once used by muleteers, has its final stage connecting Gernika to Bermeo, offering a unique historical cycling experience through the reserve. Additionally, the Tour of Biscay: Urdaibai Coast Loop provides an extensive exploration of the coastal villages and diverse landscapes of the Biosphere Reserve.
Yes, Urdaibai's charming coastal and inland towns, such as Mundaka, Bermeo, and Gernika, offer numerous opportunities to stop for refreshments. You'll find cafes, restaurants, and traditional Basque taverns (pintxo bars) in these villages, perfect for a break during your ride. Many routes are designed to pass through or near these settlements, ensuring convenient access to amenities.


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