Castillo d'Acher – Achar of Aguas Tuertas loop from Caseta de guardabosques

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Castillo d'Acher – Achar of Aguas Tuertas loop from Caseta de guardabosques

Hard

runners

Castillo d'Acher – Achar of Aguas Tuertas loop from Caseta de guardabosques

04:07

25.6km

1,360m

Running

Hard run. 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: August 21, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parque Natural de los Valles Occidentales

Waypoints

Start point

Parking

Get Directions

2.98 km

Barranco de la Espata Forest

Highlight • Forest

Mixed forest of Scots pines, mainly beeches and firs.

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3.95 km

Espata Ravine Crossing

Highlight • Gorge

6.35 km

Castillo d'Acher

Highlight • Summit

One of the most unique mountains in the Pyrenees, with an unmistakable silhouette from the Oza meadow. Its ascent constitutes an excursion without difficulty and of great attraction that crosses …

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10.1 km

Puerto d'Acher

Mountain Pass

13.7 km

Aguas Tuertas Valley

Highlight (Segment) • Gorge

hello, after a small climb up a path, the entire route is through the glacial valley, the path goes along the meandering river and has almost no slope. The route …

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15.5 km

Aguas Tuertas Valley

Highlight • Natural

One of the most special places in the Western Valleys, where the Aragón Subordán River forms sinuous meanders that run through the extensive plain. Remember that the regulations of the …

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15.6 km

Achar of Aguas Tuertas

Highlight • Viewpoint

Collado de Aguas Tuertas where the free refuge of Aguas Tuertas is located and you can also enjoy spectacular views. On one side, the capricious meanders formed by the river …

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15.7 km

Aguas Tuertas Valley and Refuge

Highlight • Viewpoint

The valley that takes the road to the refuge of Aguas Tuertas, in its last meters, appears a zig-zag, with a slope, before reaching the refuge. Once there, the views …

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20.4 km

Selva de Oza Valley

Highlight • Gorge

Impressive valley inherited from glacial modeling and this fact can be seen through the U-shaped valley. The river leads the valley towards the meanders of Aguas Tuertas.

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25.6 km

End point

Parking

Way Types & Surfaces

Way Types

10.6 km

8.90 km

3.44 km

2.61 km

Surfaces