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Spain
Madrid
Lozoya Somosierra

Pantano de Puentes Viejas

The best road cycling routes around Pantano de Puentes Viejas

4.6

(33)

4,946

riders

47

rides

Road cycling around Pantano de Puentes Viejas is set within the Sierra de Guadarrama mountains, featuring diverse landscapes and varied road conditions. The area is characterized by the Pantano de Puentes Viejas reservoir, the Lozoya River, and extensive pine forests. Cyclists can expect routes with significant elevation changes, showcasing the mountainous terrain. Roads in this region are often quiet, providing a serene cycling experience.

Best road cycling routes around Pantano de Puentes Viejas

  • The most popular road cycling route is…

Last updated: July 7, 2026

5.0

(5)

919

riders

#1.

Buitrago de Lozolla, Puebla de la Sierra, Horcajo de la Sierra – circular route

95.9km

05:21

1,850m

1,860m

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

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Hard

5.0

(1)

536

riders

66.6km

03:39

1,280m

1,280m

Tackle the difficult Puerto de la Puebla Loop, a 41.4-mile road cycling route with 4195 feet of elevation gain and dramatic views.

Hard
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Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate
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Popular around Pantano de Puentes Viejas

Madrid’s mediaeval castles and hidden gems by gravel bike

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Madrid’s mediaeval castles and hidden gems by gravel bike

Cycling Collection by

Alvaro Hernandez

Tips from the Community

JavierCR 🇪🇸
November 23, 2025, Castillo de Buitrago del Lozoya y Murallas

The Castle and Walls of Buitrago del Lozoya, one of the most important medieval sites in the Community of Madrid: The town has pre-Roman roots and was mentioned by Livy as a Celtiberian fortress (Litabrum). Muslim Fortification: Between the 8th and 11th centuries, the Muslims built the wall to protect the territory. Reconquest: Alfonso VI conquered it in 1085, and it passed into Christian hands. Current Castle: Built in the 15th century by the Mendoza family, during the reign of John II of Castile. Historical Uses: Noble residence, defensive stronghold, and setting for events such as the imprisonment of Juana la Beltraneja.

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Beautiful walled town located in the mountains north of Madrid.

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start of the route to the peak of the snowfield

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Natural passage between Madrid and Segovia in La Sierra de Guadarrama. Nature in vein!

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The Port of Navafría is one of the entrances to the famous Horizontal runway that connects this port with the historic port of Somosierra. The Port of Navafría is located between the municipalities of Lozoya and Navafría. With its 1,773 meters above sea level, it is considered a first-class port in the “Cycling Tour of Spain”. This natural area is made up of a lush oak forest in the lower part and a beautiful pine forest in the upper part.

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Beautiful town in La Sierra de Madrid with extraordinary landscapes. We recommend this town and its surroundings to isolate yourself from the world.

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The cycling breakfast is totally recommended!

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Accommodation in the Sierra Norte of Madrid, an idyllic environment for active tourism and cycling tourism. With spa, gym, restaurant, terrace. Ideal for a coffee stop or to spend the night during a bike trip.

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Frequently Asked Questions

What kind of terrain can I expect when road cycling around Pantano de Puentes Viejas?

The region around Pantano de Puentes Viejas, nestled within the Sierra de Guadarrama mountains, offers diverse landscapes. You can expect routes with significant elevation changes, featuring both challenging climbs and scenic descents. The roads are generally well-maintained and often quiet, providing a serene cycling experience away from heavy traffic.

Are there road cycling routes suitable for beginners or those looking for an easier ride?

Yes, while many routes feature challenging climbs, there are options for various skill levels. Out of nearly 50 road cycling routes available, 3 are classified as easy and 19 as moderate, offering less strenuous alternatives to explore the area.

What are some notable landmarks or attractions I can see along the road cycling routes?

The area is rich in natural beauty and historical sites. You can cycle past the impressive Puentes Viejas Dam and enjoy views of the Lozoya River. The historic town of Buitrago del Lozoya is a frequent starting point, featuring the Castle of the Mendoza Family and its complete medieval walls, which are a National Monument.

Are there any circular road cycling routes in the Pantano de Puentes Viejas area?

Yes, many routes in the area are designed as loops, allowing you to start and finish in the same location. A popular example is the Buitrago de Lozolla, Puebla de la Sierra, Horcajo de la Sierra – circular route, which is a challenging 95.9 km ride with significant elevation gain. Another option is the El Villar Reservoir and Gorge – El Villar Reservoir Dam loop from Buitrago del Lozoya, a moderate 60.25 km route.

What do other road cyclists say about their experience in Pantano de Puentes Viejas?

The road cycling routes around Pantano de Puentes Viejas are highly rated by the komoot community, with an average score of 4.7 stars from over 35 reviews. More than 5,000 road cyclists have explored this varied terrain, often praising the scenic views, challenging climbs, and the generally quiet roads.

Is it possible to find family-friendly road cycling options near Pantano de Puentes Viejas?

While many routes involve significant elevation, the region's quiet roads and scenic beauty can be enjoyed by families. For a more relaxed experience, consider exploring sections of routes that are flatter or look for areas with dedicated greenways, which are common in Spain and offer gentle slopes away from motorized traffic.

What is the best time of year to go road cycling in Pantano de Puentes Viejas?

The Sierra de Guadarrama region generally offers pleasant cycling conditions during spring and autumn, when temperatures are milder. Summer can be warm, especially in the midday sun, while winter may bring colder temperatures and potential for snow at higher elevations, making spring and early autumn ideal for comfortable rides.

Are there any specific challenging climbs for experienced road cyclists?

Absolutely. The region is known for its demanding ascents. Routes like the Puerto de la Puebla Loop, with over 1,200 meters of elevation gain, or the Navafría Pass – Buitrago de Lozoya loop from Buitrago del Lozoya, offer significant challenges and rewarding panoramic views.

Where can I find parking for road cycling in the Pantano de Puentes Viejas area, especially near Buitrago del Lozoya?

Buitrago del Lozoya is a popular starting point for many routes, and you can typically find parking within or on the outskirts of the town. Given its popularity as a tourist destination and cycling hub, there are usually designated parking areas available for visitors, though it's always advisable to arrive early during peak seasons.

Are there cafes, pubs, or accommodation options available along the road cycling routes or nearby?

Yes, towns like Buitrago del Lozoya, which serves as a hub for many routes, offer a variety of cafes, restaurants, and accommodation options. These establishments cater to visitors and cyclists, providing places to refuel and rest. Smaller villages along the routes may also have local eateries.

Can I reach Pantano de Puentes Viejas or Buitrago del Lozoya by public transport with my bike?

Public transport options to the Sierra Norte region from Madrid typically include buses. While some bus lines may allow bikes, it's crucial to check the specific operator's policy regarding bicycle transport, as rules can vary and often require bikes to be bagged or disassembled, especially during busy periods.

What are the road conditions like for cycling in this region?

The roads in the Pantano de Puentes Viejas area are generally well-regarded for road cycling, featuring mostly good surfaces. The region's roads are often quiet, providing a more serene and safe cycling experience. Drivers in Spain are also noted for being cautious around cyclists, typically allowing a one-and-a-half-meter space when overtaking.

Most popular routes around Pantano de Puentes Viejas

Traffic-free bike rides around Pantano de Puentes Viejas

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