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Routes

Mountain biking trails

Spain

Madrid

Lozoya Somosierra

Cabanillas De La Sierra

View of the Pedrezuela Reservoir – Pedrezuela Reservoir loop from Cabanillas de la Sierra

Routes

Mountain biking trails

Spain

Madrid

Lozoya Somosierra

Cabanillas De La Sierra

View of the Pedrezuela Reservoir – Pedrezuela Reservoir loop from Cabanillas de la Sierra

Moderate

riders

View of the Pedrezuela Reservoir – Pedrezuela Reservoir loop from Cabanillas de la Sierra

03:09

36.1km

430m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: April 18, 2026

Waypoints

Start point

Bus stop

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11.9 km

Old Penal Detachment of Bustarviejo

Highlight • Historical Site

This former Francoist penal detachment was in operation between 1944 and 1952. With a capacity of 250 prisoners, it served as a prison for political and common prisoners, many of …

Translated by Google •

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12.0 km

Watchtower of the Old Bustarviejo Penal Colony

Highlight • Monument

This sentry box of the old Bustarviejo penal detachment served as surveillance for the prisoners and for possible incursions from the outside, especially those of the maquis, since the environment housed different groups of them.

Translated by Google •

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22.7 km

Guadalix de la Sierra Town Hall

Highlight • Monument

22.8 km

Parish Church of San Juan Bautista, Guadalix de la Sierra

Highlight • Religious Site

Berlanga's film "Welcome, Mister Marshal" was shot in this town in 1953. There are two churches in the film, one of which is fake, but the other is the town's own gothic church, which is well worth a visit.

Translated by Google •

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26.5 km

View of the Pedrezuela Reservoir

Highlight • Viewpoint

Good views of the reservoir, also known as El Vellón, with Guadalix de la Sierra in the background. The mountains that can be seen in the background are the ends of La Pedriza and the area of the Morcuera pass.

Translated by Google •

Tip by

26.7 km

Pedrezuela Reservoir

Highlight • Lake

31.8 km

Venturada Town Hall

Highlight • Monument

36.1 km

End point

Bus stop

Way Types & Surfaces

Way Types

29.4 km

3.56 km

1.21 km

911 m

754 m

Surfaces

23.6 km

8.65 km

2.20 km

661 m

587 m

155 m

Elevation

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

Highest point (1,110 m)

Lowest point (830 m)

Weather

Today

Friday 29 May

30°C

13°C

8 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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View of the Pedrezuela Reservoir – Pedrezuela Reservoir loop from Cabanillas de la Sierra

Old Penal Detachment of Bustarviejo

Watchtower of the Old Bustarviejo Penal Colony

Guadalix de la Sierra Town Hall

Parish Church of San Juan Bautista, Guadalix de la Sierra

View of the Pedrezuela Reservoir

Pedrezuela Reservoir

Venturada Town Hall

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