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.
Last updated: July 7, 2026
5.0
(5)
919
riders
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.
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.

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3.0
(1)
71
riders
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
5.0
(1)
56
riders
68.4km
03:43
1,220m
1,220m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
48
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around Pantano de Puentes Viejas
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.
3
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Beautiful walled town located in the mountains north of Madrid.
0
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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.
0
0
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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1
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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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.


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