3.7
(6)
127
riders
12
rides
Gravel biking around Pantano de Puentes Viejas offers varied terrain in the Sierra Norte de Madrid, characterized by several reservoirs along the Lozoya River. The landscape features dense forests of pine, ash, and maple, alongside meadows and holm oak groves. The area includes diverse topography, ranging from less abrupt southern zones to more elevated points, providing a mix of gradients for gravel cyclists. Ancient cattle trails throughout the municipal area form a network of paths suitable for cycling.
Last updated: July 2, 2026
5.0
(1)
17
riders
101km
08:54
2,070m
2,070m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
15
riders
70.0km
05:22
1,040m
1,040m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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7
riders
43.6km
03:37
570m
570m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
35.4km
02:39
470m
470m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
46.8km
04:13
1,060m
1,060m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Pantano de Puentes Viejas
Panoramic loop through the Sierra del Rincón
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Many Spanish churches and chapels are dedicated to the Virgin Mary. This one in Bustarviejo bears the inscription "Purísima Concepción," meaning it is dedicated to the Immaculate Conception, a special Marian feast. This term, which may sound somewhat theoretical and difficult to grasp today, expresses the idea that the Virgin Mary was, from the very beginning, freed by God's grace from the burden of original sin—which every human being otherwise carries. This enabled her to freely answer "yes" when the Archangel later announced to her in Nazareth that she would give birth to the Son of God. In 1854, Pope Pius IX declared this article of faith a dogma. The feast day commemorating this occasion—and also the patronal feast of this church—which in Catholic liturgy is officially called the "Solemnity of the Immaculate Conception of the Blessed Virgin Mary," is celebrated annually on December 8th.
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Fountain that you will find in the Puerto de Canencia.
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Beautiful walled town located in the mountains north of Madrid.
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Port suitable for beginners who want to get in shape
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In the Middle Ages, the inhabitants of Bustarviejo had to pay a “toll” of half a bushel to use this pass to carry grain to be ground at the water mills in the Lozoya Valley. Hence the name of this pass. From the pass we can see the Carpetanos Mountains of Somosierra, part of the Lozoya Valley and the entire Sierra Norte of Madrid.
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The hill that separates Canencia from Garganta de los Montes
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There are over 15 gravel bike routes documented in the Pantano de Puentes Viejas area on komoot, offering a variety of experiences for cyclists.
The terrain around Pantano de Puentes Viejas is quite varied. You'll find paths winding through dense forests of pine, ash, and Montpellier maple, alongside meadows and holm oak groves. The area features diverse topography, from less abrupt southern zones to more elevated points like Peña Águila (1,650 m), providing a mix of gradients and surfaces suitable for gravel biking.
While many routes are rated difficult, there are moderate options available. For a moderate ride that offers scenic views without extreme difficulty, consider the Plaza de España, Rascafría – Las Presillas del Lozoya loop from El Tomillar. This 46.2 km route provides a good balance for families or those looking for a less strenuous ride.
The region is rich in both natural beauty and history. You can cycle past the impressive Castle of the Mendoza Family in Buitrago de Lozoya, explore the tranquil Bosque de las Gariñas, or admire the engineering of the Puentes Viejas Dam. The historic town of Buitrago del Lozoya with its medieval walls is also a highlight, often visible from routes along the Lozoya River.
Yes, many of the gravel routes in the area are designed as loops, allowing you to start and finish in the same location. For example, the challenging El Villar Reservoir Dam – La Puebla Pass loop from Prádena del Rincón is a popular circular option, as is the Plaza de España, Rascafría – La Morcuera Pass loop from Estación Gargantilla-Lozoya.
The gravel biking routes around Pantano de Puentes Viejas tend to be on the more challenging side. Out of 17 available routes, 13 are rated as 'difficult,' while 4 are 'moderate.' This means you can expect significant elevation gains and longer distances on many trails, making it ideal for experienced gravel bikers.
The area is highly rated by the komoot community, with an average score of 3.6 stars from over 5 reviews. Cyclists often praise the extensive views of the reservoirs and surrounding natural areas, as well as the diverse landscapes that make each ride unique.
Absolutely. The El Berrueco – El Villar Reservoir loop from Prádena del Rincón is particularly known for offering extensive views of the reservoirs and the beautiful natural areas that surround them.
Yes, the Lozoya River is a central feature of the region. The Views of the Lozoya River – El Berrueco loop from Lozoyuela is an excellent choice, leading you through forested areas and directly along the river, offering picturesque scenery.
You'll experience a rich and varied natural environment. The area is part of the 'Cuenca del Río Lozoya y Sierra Norte' Special Conservation Zone. Expect to ride through dense forests of pine, ash, and Montpellier maple, alongside meadows, pastures, holm oaks, junipers, and Mediterranean scrubland like rockrose, lavender, and thyme. The presence of several reservoirs along the Lozoya River also means you'll often be cycling near water.
While specific viewpoints are not always marked on every route, the varied topography and reservoir-side paths naturally offer numerous panoramic vistas. The region research mentions viewpoints such as the Mirador de Buitrago del Lozoya, which provides stunning views of the medieval village and surrounding nature, often accessible or visible from nearby cycling paths.


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