Aizkorri-Aratz parke naturala/Parque Natural de Aizkorri-Aratz
Aizkorri-Aratz parke naturala/Parque Natural de Aizkorri-Aratz
4.1
(199)
16,317
riders
218
rides
Road cycling routes around Aizkorri-Aratz parke naturala/Parque Natural de Aizkorri-Aratz traverse a diverse landscape characterized by striking limestone karstic formations, extensive beech and oak forests, and significant elevation changes. The park, located in the Basque Country, features impressive ridges, sinkholes, and ravines, offering a challenging environment for cyclists. Routes often wind through dense woodlands and open pasturelands, with views of the region's highest peaks like Aitxuri and Aizkorri. This terrain provides varied road cycling experiences, from demanding climbs to scenic…
Last updated: July 11, 2026
4.3
(11)
171
riders
85.7km
04:09
1,130m
1,130m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
53
riders
69.1km
03:58
1,530m
1,530m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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49
riders
121km
06:25
2,220m
2,220m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
23
riders
63.3km
03:30
1,260m
1,260m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
18
riders
16.0km
01:03
500m
500m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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The Ormaiztegi Viaduct (inaugurated on August 15, 1864) is the town's most emblematic symbol. Designed by engineer Alexander Lavalley, a predecessor of Gustave Eiffel, it stands in a beautiful landscape overlooking the Eztanda River. It is the most important structure on the Madrid-Paris railway line, spanning 289 meters in length and 34 meters in height. Its 18,000 tons are supported by four pillars. The double track was installed in 1912 and electrified in 1928. It is currently disused and forms part of the Basque Country's cultural heritage.
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This walk is beautiful but we did it in April and it was very wet and slippery. There was a part with lots of stones and mud and leaves where you sank half a meter. Not very steep until the sanctuary. There we had to zigzag very steeply up the rock. Better to walk up than down but that part is strenuous and not average.
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The Plaza de los Fueros is a large rectangular pedestrian street that forms the center of the city and features several good taverns and restaurants with terraces under the arcades. Designed in the mid-19th century, it is a colonnaded square, enclosed on three sides, opening onto a small garden area, behind which is a large esplanade used for a street market on Saturdays. In this square of simple neoclassical buildings, the Town Hall building is particularly striking for its lavish and exuberant decoration.
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Every time I see it I am more impressed.
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An architectural marvel, very, very original.
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I know the area very well and I recommend it.
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From the port of Mandubia, located 532 meters high, there are magnificent views of the Arriarán reservoir surrounded by green mountains. There is a restaurant right next door.
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Aizkorri-Aratz Natural Park is characterized by a dramatic limestone karstic landscape, featuring impressive ridges, sinkholes, and ravines. Road cycling routes often involve significant elevation changes, offering rewarding climbs and descents through dense beech and oak forests, as well as open pasturelands. You'll find a mix of challenging mountain passes and more gentle valley rides.
Yes, while the park is known for its challenging terrain, there are options for easier rides. For instance, the Zalduondo – Agurain/Salvatierra loop from Araia is an easy 37.6 km path that offers a more gentle ride through the region's valleys and open areas, suitable for those looking for a less strenuous experience.
The park offers breathtaking vistas of its karstic formations and highest peaks like Aitxuri and Aizkorri. You can cycle through extensive beech and oak forests, such as the Altzania beech forest. Notable natural features include the basin of La Lece and the Urbia depression. For a unique historical and natural landmark, consider visiting the San Adrián Tunnel, an ancient medieval pass.
Absolutely. The spectacular Sanctuary of Arantzazu, perched over a deep gorge, is a significant cultural site that can be incorporated into a ride, such as the Sanctuary of Arantzazu – Monument to the Basque Shepherd loop from Komentua. The historic San Adrián Tunnel, part of the Camino Real and St. James' Way, is another important cultural landmark.
Spring and autumn generally offer the most pleasant conditions for road cycling in Aizkorri-Aratz. During these seasons, the weather is typically milder, and the natural landscapes, especially the beech forests, display vibrant colors. While summer can be good, some routes might be more exposed to heat. Winter can bring snow to higher elevations, potentially closing some passes.
Parking is generally available at common starting points for routes, such as near towns like Araia or Komentua. Many routes are designed as loops, making it convenient to park your vehicle at the start and finish at the same location. Specific parking information can often be found in the details of individual komoot Tours.
Generally, road cycling on established roads within Aizkorri-Aratz Natural Park does not require special permits. However, it's always advisable to respect park regulations, stay on designated roads, and be mindful of other park users and wildlife. For specific inquiries, you can contact one of the park's visitor centers located in Arantzazu, Araia, or Zegama.
The area is highly rated by the komoot community, with an average score of 4.1 stars from over 117 reviews. Cyclists often praise the diverse and dramatic landscapes, the challenging climbs with rewarding panoramic views, and the opportunity to combine scenic rides with visits to cultural landmarks like the Sanctuary of Arantzazu.
Yes, for experienced cyclists seeking a challenge, the park offers routes with significant elevation gains. An example is the Panoramic view of Eskoriatza – Udana Pass Ascent loop from Brinkola, a difficult 118 km route with over 1,600 meters of elevation gain, providing a demanding and rewarding experience.
Yes, towns and villages surrounding and within the park, such as Oñati, Zegama, and Araia, offer various amenities including cafes, pubs, restaurants, and accommodation options. Many routes are designed to pass through or near these settlements, allowing for convenient stops to refuel and rest.
There are over 180 road cycling routes available in Aizkorri-Aratz Natural Park, catering to various skill levels. This includes 41 easy routes, 87 moderate routes, and 57 difficult routes, ensuring there's something for every road cyclist.


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