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Aizkorri Mountain Trekking

  • San Sebastián
  • Nature et Sports

We head to the roof of Gipuzkoa to find a building covered in ‘thorns’, a walk more than 1,000 meters high among meadows and forests, and a breed of Rastafarian sheep from whose milk the most famous cheese in the region is made.

Reserve maintenant


2 à 7 persones


2 pax: 455€

Extra person: +105€

Child (10-17): +75€

Children under 10: free

For groups bigger than 6 people contact us 




Professional guide, transport, lunch box with local specialties and water.


Departure 9:00h


Medium level. 17km 


5-7 hours depending on your fitness level


Sanctuary of Aranzazu, Mountain Aizkorri, San Adrian

We go by van to the Arantzazu Sanctuary (90 km south of San Sebastián) and there we begin an ascent, walking, of 400 meters of slope, to the domains of Aizkorri-Aratz Natural Park.


The Arantzazu Sanctuary was built in the 1950s amid a great controversy: its architecture was considered so modern and bizarre at the time that even the church itself spoke out against it and prevented Oteiza’s sculpture of the 14 apostles from being installed, considering it heresy (according to the Bible there are officially only 12 apostles). The building imitates the thorns of the bush in which the Virgin appeared in the 15th century. In this building you’ll find, among other things, the first works of now consecrated Basque artists such as Chillida, and spaces that seem to have been taken from the film Alien (1979) by Ridley Scott.

Take me to the top

Once at the top of the Aizkorri mountain range, we cross the fields of Urbia, immense green meadows, groomed like golf courses and inhabited by herds of horses, cows and latxa sheep (you’ll recognize them by their primitive appearance and their wool that seems to form dreadlocks). After the walk, a well-deserved typically Basque lunch with km. 0: cured sausages, ham, tuna and Idiazabal cheese (made from the milk of the latxa sheep you, hopefully, have seen grazing).

Choose your own adventure

From Urbia you have two options: go down with the guide again to the Arantzazu sanctuary or cross the mountain to its eastern side to reach the Roman road (actually, it’s medieval - the Romans didn’t want to climb so high) and the famous tunnel of San Adrián, a natural cavity that served as a passage for travelers heading towards Castile and where there were taverns, inns and a hermitage that still stands today. From the tunnel to the van you’ll have a short walk.

Réservez l’expérience Aizkorri Mountain Trekking

Aizkorri Mountain Trekking: 2016-06-15

My husband and I spent 3 days with Ernes while we were in San Sebastian - one day he showed us round the city and we enjoyed a wide variety of pintos with him at five of his favorite places. The next day we enjoyed a private cooking class at a local gastronomy club and then he showed us his home village of Hundarribia. We spent our third day in the mountains; we visited the very interesting Sanctuary of Arantzazu and took a 9 mile hike in the beautiful Aizkorri-Aratz Natural Park. Ernes is a fantastic guide - enthusiastic, energetic, knowledgable and flexible. His focus on cultural, gastronomic and active adventure fit our interests perfectly. There is so much to do in the area - we highly recommend spending time with him to enhance your experience.

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