4.6
(89)
1,819
riders
60
rides
No traffic touring cycling routes around Kortezubi are set within the Urdaibai Biosphere Reserve, a region characterized by the Oka river basin, estuary, and a mix of green hills and coastal cliffs. The landscape offers diverse topography, from tranquil estuary views to more challenging mountainous terrain. Cyclists can explore routes that wind through inland valleys and along the coast, providing varied scenic backdrops. The area features both gentle gradients and significant elevation changes, catering to different cycling preferences.
Last updated: May 5, 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.
9
riders
31.3km
02:11
590m
590m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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38
riders
78.5km
05:41
1,650m
1,650m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(4)
34
riders
45.1km
02:59
620m
620m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
35
riders
45.6km
03:53
1,310m
1,310m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Kortezubi
Recreation of Picasso's famous painting. The original can be seen in Madrid.
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A beautiful vantage point. If the season is right, there's also the opportunity to watch whales. The path further to Gaztelugatxe, however, requires pushing because it's very overgrown. We didn't go far, but turned around and drove back along the road.
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From the lighthouse you have a 270° view on the coast, very clear on st juan de Gaztelugatxe, perfect spot for some scenic pictures!
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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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There are always great views from the street
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A low point on the tour. It was a Sunday and all the restaurants were packed. When I politely expressed my wish to be able to charge the battery in Spanish, we were literally thrown out. Spaniards drive long distances to eat out on Sundays. It has never happened to us that the battery was not allowed to be charged. Of course we would have eaten and drank. The whole place was almost entirely made up of holiday apartments, with the blinds down and totally dead without the lunch guests. No hotel, no guesthouse, but with a train station. Cheers to the Euskotren regional train in the Basque Country, on time, super helpful staff. So take the train back to Gernica!!!
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Komoot offers over 50 dedicated no-traffic touring cycling routes around Kortezubi. These routes are designed to provide a serene cycling experience away from vehicular traffic, allowing you to fully immerse yourself in the stunning landscapes of the Urdaibai Biosphere Reserve.
The terrain around Kortezubi is incredibly diverse, ranging from tranquil estuary views and coastal paths to challenging climbs through green hills and mountainous formations. You'll find routes that follow the Oka river, wind through lush forests, and offer spectacular views of the Mundaka estuary and beaches like Laida and Laga. While many routes are paved, some may include well-maintained gravel sections, especially those venturing deeper into the natural reserve.
Yes, while many routes are more challenging, there are options suitable for families. Look for routes with less elevation gain and shorter distances, often found closer to the estuary or within flatter valley areas. These paths provide a safe and enjoyable environment for cyclists of all ages to explore the natural beauty of the Urdaibai Biosphere Reserve.
The best seasons for touring cycling in Kortezubi are typically spring (April to June) and autumn (September to October). During these months, the weather is generally mild and pleasant, with less extreme heat than summer and fewer rainy days than winter. The natural scenery is also particularly vibrant, making for a more enjoyable ride.
Many routes will take you past significant natural landmarks. You can cycle near the unique Oma Forest, also known as the Painted Forest, or enjoy expansive Views over the Urdaibai marsh. The entire region is part of the Urdaibai Biosphere Reserve, offering stunning natural beauty at every turn. Some routes also provide glimpses of the Old Tree of Gernika (Gernikako Arbola).
Absolutely. Kortezubi and its surroundings are rich in cultural heritage. You can cycle to areas near the Santimamiñe Cave, a World Heritage site with prehistoric paintings. The region also features historical sites like the Gothic-style Santiago Church and the ancient Monastery of Santa María de Zenarruza, which sits along the Way of St. James. Many routes will pass through charming villages, offering a glimpse into Basque culture.
Yes, many of the no-traffic touring cycling routes around Kortezubi are designed as circular loops, allowing you to start and end your journey in the same location. For example, the challenging Tour of Biscay: Urdaibai Coast Loop offers a fantastic circular experience along the coast. Another option is the Montecalvo Loop from Gernika, which provides a scenic circular ride inland.
The routes vary significantly in difficulty. While there is one easy route, the majority are classified as moderate (11 routes) or difficult (48 routes). The difficult routes often involve significant elevation gains, such as the 1312m ascent on the Sollube Summit – Guernica Mural in Gernika loop from Institutoa. Cyclists should be prepared for varied terrain and climbs, especially when exploring the mountainous areas.
Yes, as you cycle through the charming villages and towns within the Urdaibai Biosphere Reserve, you will find opportunities to stop at local cafes and pubs. These establishments are often cyclist-friendly and provide a great chance to refuel and experience local Basque hospitality. Planning your route in advance can help identify suitable stops.
The area is highly rated by the komoot community, with an average score of 4.6 stars. Reviewers often praise the stunning natural beauty of the Urdaibai Biosphere Reserve, the diverse and challenging terrain, and the opportunity to explore quiet, traffic-free roads. The blend of coastal views, lush forests, and cultural landmarks makes for a truly memorable cycling experience.
Public transport options, including bus and train services, connect various towns and villages within the Urdaibai Biosphere Reserve. Some routes may allow for bicycle transport, but it's advisable to check specific service providers and their policies regarding bikes in advance. This can be a convenient way to reach starting points or return from longer rides.
Parking is generally available in the main towns and villages around Kortezubi, such as Gernika-Lumo, which often serve as popular starting points for cycling routes. Look for designated parking areas or public car parks. It's always a good idea to check local signage for any restrictions or fees.


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