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Valdemurrio Reservoir – Tunnel loop from Casares

Routes

Bike touring routes & trails

Valdemurrio Reservoir – Tunnel loop from Casares

Hard

4.5

(6)

riders

Valdemurrio Reservoir – Tunnel loop from Casares

04:51

50.9km

1,490m

Cycling

Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.

Last updated: August 2, 2026

Tips

The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 25.8 km for 68 m

Waypoints

Start point

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13.2 km

Valdemurrio Reservoir

Highlight • Lake

Picturesque reservoir in the valley of the Río Quirós.

Translated by Google •

Tip by

24.1 km

Tunnel in Las Ubiñas-La Mesa Natural Park

Highlight • Structure

24.8 km

Rock Tunnels Along the Pathway

Highlight • Structure

27.9 km

Natural Rock Tunnels on the Senda del Oso

Highlight • Natural

29.5 km

Desfiladero de Peñas Juntas on the Senda del Oso

Highlight • Gorge

Following the route of the old mining train, we arrive at this spectacular passage along the Senda del Oso.
Moderate your speed: remember that we share the road with pedestrians.

Translated by Google •

Tip by

32.9 km

Illuminated Tunnels of the Senda del Oso

Highlight • Trail

The illuminated tunnels of the path of the bear, one of the most fabulous points

Translated by Google •

Tip by

38.2 km

Embalse de Valdemurio

Lake

50.9 km

End point

Way Types & Surfaces

Way Types

21.6 km

17.8 km

9.65 km

1.68 km

188 m

Surfaces

21.2 km

17.3 km

9.89 km

2.45 km

< 100 m

Elevation

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

Weather

Thursday 13 August

25°C

17°C

26 %

Additional weather tips

Max wind speed: 10.0 km/h

to get more detailed weather forecasts along your route

Comments

June 14, 2025,Asturies: Draht-Esel-Tour auf dem Bärenpfad

The "Senda del Oso," the Bear Trail, leads south of Proaza in the Trubia Valley through deep gorges and tunnels, along a disused 150-year-old industrial railway line. Although it is supposedly the area with the highest bear density in Spain (or rather, was), you won't see any bears at the Bear House in Proaza or anywhere along the trail (thanks …

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Valdemurrio Reservoir – Tunnel loop from Casares

Valdemurrio Reservoir

Tunnel in Las Ubiñas-La Mesa Natural Park

Tunnel

Rock Tunnels Along the Pathway

Natural Rock Tunnels on the Senda del Oso

Tunnel

Desfiladero de Peñas Juntas on the Senda del Oso

Illuminated Tunnels of the Senda del Oso

Nearby routes

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