4.5
(83)
847
riders
80
rides
Mountain biking around Pantano de Puentes Viejas offers diverse terrain within the Sierra de Guadarrama, featuring routes that traverse mountain landscapes and skirt the edges of the reservoir. The region is characterized by lush pine forests, such as the Pinar de Buitrago, and varied tracks including unpaved sections, paved roads, asphalt, and narrower paths. Mountain formations provide attractive views, and the area is part of a system of reservoirs fed by the Lozoya River. This environment provides a range of…
Last updated: July 11, 2026
4.5
(4)
7
riders
21.4km
01:48
270m
270m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.6
(11)
88
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4.3
(3)
38
riders
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
22
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
17
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Popular around Pantano de Puentes Viejas
Beautiful place and beautiful river, with water, as it was flowing today.
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Non-cycling trail leading to the San Mamés waterfall.
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Stone bridge difficult to access by bicycle.
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Beautiful walled town located in the mountains north of Madrid.
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A beautiful stone bridge. The climb afterward is quite rocky, and you'll have to walk for a bit.
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Stone bridge that crosses the Lozoya River near its passage through the Pinilla reservoir.
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Viewpoint with wonderful views
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There are over 70 mountain bike trails available around Pantano de Puentes Viejas, offering a wide range of options for different skill levels. These include 7 easy routes, 37 moderate routes, and 32 difficult routes.
The trails around Pantano de Puentes Viejas offer diverse terrain, including unpaved tracks, paved sections, asphalt, and narrower paths. You'll ride through mountain landscapes, along the reservoir's edges, and through lush pine forests like the Pinar de Buitrago, providing a varied and engaging experience.
Yes, there are several easy mountain bike trails perfect for beginners or families. An excellent option is the Presa de Puentes Viejas – circular desde Buitrago de Lozoya, an easy 21.4 km route that offers panoramic views around the reservoir.
Absolutely. For experienced riders seeking a challenge, there are 32 difficult routes in the area. A popular choice is the Pinilla Reservoir Viewpoint – Matafrailes Bridge loop from Buitrago del Lozoya, a 47.3 km trail leading through varied and demanding terrain.
While mountain biking, you can enjoy stunning natural features such as the tranquil waters of the Pantano de Puentes Viejas itself, the Lozoya River, and the surrounding pine forests like the Bosque de las Gariñas. You'll also encounter other reservoirs like Embalse del Villar and Embalse del Atazar, and unique rocky areas.
Yes, the region is rich in history. You can visit the medieval town of Buitrago del Lozoya, home to the impressive Castle of the Mendoza Family and its historic walls. The Puentes Viejas Dam itself is an engineering marvel, and historical bunkers from the 'Frente del Agua' near Paredes de Buitrago offer a glimpse into the past.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 90 reviews. Mountain bikers often praise the varied terrain, the scenic views of the reservoirs and surrounding mountains, and the combination of unpaved tracks and paved sections that make for an engaging ride.
Many routes in the area are circular, allowing you to start and end in the same location. For example, the Views of the Lozoya River – El Atazar Reservoir loop from Buitrago del Lozoya is a popular moderate 38.6 km circular path offering scenic views.
Yes, Buitrago del Lozoya, a common starting point for many routes, is accessible by public transport from Madrid. This makes it convenient for cyclists who prefer not to drive to the trailheads.
Generally, no specific permits are required for mountain biking on established trails around Pantano de Puentes Viejas. However, it's always advisable to check local regulations, especially if venturing into protected or restricted areas within the wider Sierra de Guadarrama Natural Park.
The spring and autumn months are generally considered the best time for mountain biking around Pantano de Puentes Viejas. The weather is milder, and the natural landscapes are particularly vibrant. Summer can be hot, while winter may bring colder temperatures, though the area is generally rideable year-round.
Yes, some routes provide excellent views of the historic town of Buitrago del Lozoya. The View of Buitrago del Lozoya – Buitrago de Lozoya loop from Buitrago del Lozoya is a moderate 35.5 km route specifically designed to showcase these scenic perspectives.
Yes, the region's network of reservoirs allows for routes that link several of them. For instance, the Puentes Viejas Dam – El Villar Reservoir and Gorge loop from Buitrago del Lozoya is a moderate 45.3 km route that takes you past multiple impressive water bodies.


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