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Spain
Madrid
Lozoya Somosierra
Guadalix De La Sierra

Fuente del Collado Restaurant – Peña del Retamalejo loop from Guadalix de la Sierra

Routes
Bike touring routes & trails
Spain
Madrid
Lozoya Somosierra
Guadalix De La Sierra

Fuente del Collado Restaurant – Peña del Retamalejo loop from Guadalix de la Sierra

Hard

5.0

(2)

44

riders

Fuente del Collado Restaurant – Peña del Retamalejo loop from Guadalix de la Sierra

03:15

33.1km

560m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 9, 2026

Waypoints

A

Start point

Bus stop

Get Directions
1

11.1 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 •

Tip by

2

11.2 km

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 •

Tip by

3

13.8 km

4

16.2 km

Fuente del Collado Restaurant

Highlight • Restaurant

Really good restaurant and a fountain with fresh water

Tip by

5

16.9 km

Ascent to Bustarviejo via Las Viñas

Highlight (Segment) • Climb

The ascent is not excessively long but it does have some sections with slopes of 11% and 12%, all on dirt tracks. Go up enjoying the scenery.

Translated by Google •

Tip by

6

20.7 km

Peña del Retamalejo

Highlight • Summit

B

33.1 km

End point

Bus stop

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Way Types & Surfaces

Way Types

28.9 km

2.41 km

1.40 km

405 m

Surfaces

29.3 km

2.65 km

1.16 km

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Elevation

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

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Weather

Powered by Foreca

Thursday 8 October

18°C

6°C

0 %

Additional weather tips

Max wind speed: 7.0 km/h

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

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