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Basque Country

Gipuzkoa

Goierri

Parçonerie Générale De Guipuscoa-Et-Alava

Aizkorri Summit (1,523 m) – San Adrián Tunnel loop from San Adriango tunela

Routes

Mountain hikes & routes

Basque Country

Gipuzkoa

Goierri

Parçonerie Générale De Guipuscoa-Et-Alava

Aizkorri Summit (1,523 m) – San Adrián Tunnel loop from San Adriango tunela

Hard

hikers

Aizkorri Summit (1,523 m) – San Adrián Tunnel loop from San Adriango tunela

05:45

13.3km

790m

Mountaineering

Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: April 17, 2026

Tips

Includes segments that may be dangerous

Parts of this route comprise highly technical, difficult, or hazardous terrain. Specialist equipment and prior experience is required.

After 1.57 km for 1.56 km

After 3.20 km for 414 m

Waypoints

Start point

Parking

Get Directions

2.96 km

Altuna Peak

Highlight • Summit

Enjoy the views because from this point begins a technical and long descent through the mountain gorge.

Translated by Google •

Tip by

3.49 km

Aizkorri Refuge and Hermitage

Highlight • Mountain Hut

The Aizkorri Free Refuge is located in one of the most visited ranges of the Basque Mountains, because it is home to Punta Aitxuri, the roof of Guipuzcoa

Translated by Google •

Tip by

3.55 km

Aizkorri Summit (1,523 m)

Highlight • Summit

An essential for those of us who live around here, without wind (which rarely happens around there) it must be a joy to sit quietly to have a sandwich. Well, …

Translated by Google •

Tip by

4.33 km

Illarrabeltxeko Gaina Summit

Highlight • Summit

It is the highest point of the route. You will have beautiful views after the demanding climb. It is a technical climb due to the state of the terrain, especially if it is wet or foggy.

Translated by Google •

Tip by

4.50 km

Aketegi Summit

Highlight • Summit

One of the emblems of the Sierra, although it is not the highest, it is 1548m, the Aizkorri 1523m. A delight in any case.

Translated by Google •

Tip by

5.00 km

Iraule Summit

Highlight • Summit

The penultimate peak of the day, the last before starting the descent of the ridge. A joy of landscape.

Translated by Google •

Tip by

8.93 km

Zulonpo tumulua

Archaeological Site

10.4 km

Liñategieta

Highlight • Summit

First peak on the GR towards Urbia from the surveys. The last few meters are easy and the views are spectacular.

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Tip by

11.8 km

San Adrián Tunnel

Highlight • Cave

Curious formation that allows us to go from one side of the mountain to the other.
Be careful if it is wet or damp as the stones slip a lot.

Translated by Google •

Tip by

13.3 km

End point

Parking

Way Types & Surfaces

Way Types

8.48 km

4.34 km

429 m

< 100 m

Surfaces

7.57 km

3.22 km

1.41 km

1.06 km

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Friday 26 June

33°C

18°C

21 %

Additional weather tips

Max wind speed: 14.0 km/h

to get more detailed weather forecasts along your route

Comments

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Aizkorri Summit (1,523 m) – San Adrián Tunnel loop from San Adriango tunela

Altuna Peak

Aizkorri Refuge and Hermitage

Aizkorri Summit (1,523 m)

Illarrabeltxeko Gaina Summit

Aketegi Summit

Iraule Summit

Liñategieta

San Adrián Tunnel

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