Aiako Harria - The Three Crowns

What more could you ask for in the coastal area of the Southern Basque Country: mountainous landscape, granite terrain and a ridge path! The Three Crowns massif offers three peaks to explore. We will start this route with Erroilbide, then Txurrumurru and finally Irumugarrieta. The view is magnificent, with a 360° panorama of the Southern Basque Country and the Labour coastline stretching as far as the Landes. The route along the ridge includes passages, in couloirs and on slabs, which must be negotiated with caution.
Some passages require the use of your hands. There is a fixed ring on the ascent to Txurrumurru. Not suitable for those who suffer from vertigo.

Details

42092337
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  • Walking
    Activity: Walking
  • ↔
    Distance: 6.20 km
  • ◔
    Average duration: 3h 20 
  • ▲
    Difficulty: Very difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 557 m
  • ↘
    Descent: - 552 m

  • ▲
    Highest point: 797 m
  • ▼
    Lowest point: 410 m

Photos

Description of the walk

Park your car in the car park along the GI 3454 road.

(S/E) Follow theGR®®121which starts on the right.

(1) Leave the path on the right and continue straight ahead, keeping south.

(2) Leave theGR®®121and look for an existing trail to climb up on the left, directly towards the ridge.

(3) Continue along the ridge path on the left, alongside a fence.

(4) Turn right onto the path to tackle the first steep section where you will need to use your hands: follow the red markings. Reach Erroilbide.

(5) Continue along the ridge to reach the foot of Txurrumurru

(6) Climb a slab with steps carved into the rock, about 15 metres high, following the red markings. Continue to the summit of Txurrumurru, then towards Irumugarrieta

(7) Continue along the path, leaving the path leading to Putzuetako on your left, and after about 20 metres, turn left to head north. Follow the path, making a first circular to the right, then another circular to the left, and continue downhill through the woods.

(8) Keep left at the fork, keep right at the three-way junction that follows, then turn left again and return to the car park where you started (S/E).

Waypoints

  1. S/E : km 0 - alt. 501 m - Car park
  2. 1 : km 1.83 - alt. 480 m - Intersection, straight ahead
  3. 2 : km 2.64 - alt. 602 m - Leave the GR® trail on the left
  4. 3 : km 2.98 - alt. 668 m - Arrival at the ridge
  5. 4 : km 3.86 - alt. 727 m - Steep slope
  6. 5 : km 4.04 - alt. 758 m - Erroilbide
  7. 6 : km 4.52 - alt. 760 m - Delicate passage
  8. 7 : km 4.87 - alt. 773 m - Irumugarrieta.
  9. 8 : km 5.66 - alt. 596 m - Junction, on the left
  10. S/E : km 6.2 - alt. 500 m - Car park

Notes

Some sections require the use of hands as the slope is steep, particularly at waypoints (4) and (6). There is a fixed ring on the Txurrumurru ascent (6) for possible rope belaying. Not suitable for those prone to vertigo.

Worth a visit

It is worth completing the tour after (7) and continuing nearby towards the summit of Muganix, then continuing on to the descent.
Shortly before arriving at the car park, you will find the remains of a glacier in the form of a square masonry hole on the hillside, which in centuries past was used to store snow (explanations on site in Spanish and Basque).

Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.1 / 5
Based on 15 reviews

Reliability of the description
4.2 / 5
Ease of following the route
3.7 / 5
Route interest
4.4 / 5
User 18839286

Overall rating : 4.7 / 5

Date of your route : Apr 27, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A superb hike, suitable only for experienced hikers due to a section involving a technical rock face.

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GERMAINY
GERMAINY

Hello
What do you mean by the Three Crowns? The route passes through three peaks that give the route its name, the ‘Three Crowns’.
Did you follow this route correctly?
Kind regards

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User 28697708

Overall rating : 3 / 5

Date of your route : Mar 12, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★☆☆☆☆ Very disappointing
Very busy route : Yes

I was very disappointed – the route didn't take us up any of the Three Crowns at all

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User 27831465

Overall rating : 4.3 / 5

Date of your route : Oct 11, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A magnificent hike, I didn't do the whole thing because I was with my dog, so I can't comment on the Erroilbide section at the moment.
Luckily, I had recorded the route with directions, which helped me a lot.
Crowded.
No particular difficulties.
I'll do it again with Erroilbide because it's really superb!

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GERMAINY
GERMAINY

Hello
Indeed, you encountered difficulties to the point of having to call for help. I assume this was on the climb up to Txurrumurru, where there is a slab that you have to climb using your hands. This section can be tackled on the right-hand side via steps carved into the rock, which can make the climb easier. However, vertigo can be a problem, as with any hike where there is a steep drop.
I hope you will be able to enjoy this hike more peacefully another time.

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Miomorgan
Miomorgan

Thanks for the feedback. Placing your hands isn't a problem, but there is a section with some real climbing where you really mustn't fall. However, it's a very good hike. I would go back with more equipment.

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Miomorgan
Miomorgan

Overall rating : 3.3 / 5

Date of your route : Sep 24, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : No

Very beautiful hike. At least the first part. Unfortunately, the difficulty is clearly underestimated. Be careful, the climbing is dangerous. My friend got stuck on a cliff face and I couldn't climb down to get her. We had to call for help. We were rescued by 10 Spanish firefighters and the PGHM at 10 p.m. on a dark night. Don't underestimate the climbing and take the necessary equipment.

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Hamalur
Hamalur

Overall rating : 4.7 / 5

Date of your route : Aug 15, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

I took some friends on this route, which I have already done three times. Be careful, as mentioned in other reviews, this route is not a walk in the park. There are many technical sections, and I strongly recommend doing it in the direction described, i.e. in the direction of the climb (I have already seen a woman freeze and get stuck going downhill). If you're still up for it, it's a magnificent walk with superb views of San Sebastián and Hendaye, and if the weather is clear enough, you can also see the Landes coast.

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gueshpat
gueshpat

Overall rating : 3.7 / 5

Date of your route : May 31, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

The hike is 8.2 km according to our GPS, and the duration is much longer given the actual difficulty
Accustomed to hiking in the Basque Country and the Pyrenees, this hike should not be classified as difficult but as very difficult and, above all, very dangerous. At certain points, the rock face offers very few handholds, and if you fall... the danger is very real.
The route is not always well marked, so it is best to follow the trail using the app

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patialin
patialin

Overall rating : 3.7 / 5

Date of your route : Apr 07, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : Yes

a big downside for me is that it's more than difficult
and should not be attempted lightly.
many hikers will need to take a rope with them
it's not slabs where you need to use your hands, but actual climbing
for very experienced hikers

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thierrylafitte
thierrylafitte

Overall rating : 5 / 5

Date of your route : Jan 01, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

This was my first hike classified as "difficult", and I was not disappointed! I had a few questions about certain sections: "But where do I go here? 😅". In the end, with a little effort and without rushing, I made it! I'm pretty happy to have accomplished it!

It's important to be in good physical condition and have the right equipment.
Thank you

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Valérie genissac
Valérie genissac

Overall rating : 4.3 / 5

Date of your route : Nov 30, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

A magnificent hike with aerial passages, not recommended for those prone to vertigo.
I recommend following the trail in the direction indicated.
A 360-degree experience, with ridge passages and a few rock faces to cross
.
A pure delight for experienced hikers.
Valérie

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Valérie genissac
Valérie genissac
• Edited:

Overall rating : 4.3 / 5

Date of your route : Nov 30, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

A magnificent hike with aerial passages, not recommended for those prone to vertigo.
I recommend following the trail in the direction indicated.
A 360-degree view, ridge passages and a few rock faces to cross

A pure delight for experienced hikers.
Valérie

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Sylvain64
Sylvain64

Overall rating : 5 / 5

Date of your route : Nov 01, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A superb hike with magnificent rocky and coastal landscapes. You do need to be somewhat accustomed to the mountains, but if you are, you will have no trouble overcoming the few difficulties, which are explained very clearly in the description. Honestly, there is nothing insurmountable. A pure pleasure to share.

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maximedupire
maximedupire

Overall rating : 5 / 5

Date of your route : Aug 04, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

After reading warnings here and elsewhere, I was very apprehensive about the climbing section between Erroilbide Txurrumurru (6). Yes, it is better to do this section on the way up, and it is very clear that you should not start the route if you think the rock might be wet. But apart from these reservations, it went very well. I was prepared to turn back if necessary... I smile at that.
And the few metres leading up to point 6 are in a magical alpine setting.
Not only will I do the race again, but I hope to be able to take people with me (not just anyone though )

PS: I did the Cirque de la Solitude 25 years ago. Unless they've installed a staircase since then, I don't see how this section 6 could be any more difficult and/or dangerous.

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