4.7
(38)
4,643
riders
40
rides
Road cycling around Embalse de Río Sequillo is set within the Sierra de Guadarrama, offering a mountainous backdrop with diverse terrain. The region features challenging mountain passes, such as Puerto de la Puebla and Cotos Pass, known for significant elevation gains. Cyclists can expect a mix of dense forests, open lowlands, and expansive meadows, with good road conditions throughout. The area provides panoramic views of reservoirs and the surrounding peaks, making it a compelling destination for road cycling enthusiasts.
Last updated: November 4, 2026
4.6
(7)
888
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)
531
riders
66.6km
03:39
1,280m
1,280m

5.0
(1)
50
riders
68.4km
03:43
1,220m
1,220m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
49
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
24
riders
49.4km
02:42
1,010m
1,010m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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A very pleasant pass to climb up the Puebla de la Sierra side. To do this, you have to access it from Robledillo, with very steep ramps to warm up, and a few kilometers on a narrow and bumpy road. The views and the route are totally worth it. Avoid weekends, especially busy hours, as motorcycles, and especially cars, can spoil the party a bit, as I say, the road is very narrow. There is a fountain at the lowest point between Robledillo and Puebla, and another one when leaving Puebla de la Sierra. They are the only two points where you will be able to fill your bottles "for free".
0
0
Watch out for the asphalt on the descent, there are potholes and the surface is quite uneven. You won't even notice it on the climb.
0
0
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
0
A beautiful town in the Sierra de Madrid, with particularly good water.
0
0
Prádena del Rincón is a charming village located in the Sierra Norte of Madrid, founded between the 11th and 12th centuries and historically linked to livestock farming. Strolling through its streets reveals traditional architecture surrounded by nature. Its monuments include the Romanesque-Mudejar church of Santo Domingo de Silos. The tranquility of the area and its rural trails invite you to a peaceful and contemplative getaway in the heart of the Sierra del Rincón. This is ideal for those seeking a genuine connection with nature and rural history, far from the hustle and bustle, with routes that allow you to explore ancient transhumance trails and enjoy the area's biodiversity.
0
0
Beautiful walled town located in the mountains north of Madrid.
0
0
start of the route to the peak of the snowfield
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0
There are over 45 road cycling routes around Embalse de Río Sequillo, offering a wide range of options for different skill levels. The komoot community has explored these routes over 4500 times.
The region is set within the Sierra de Guadarrama, featuring a mountainous backdrop. You can expect diverse terrain, from dense forests and open lowlands to expansive meadows. Many routes include challenging mountain passes like Puerto de la Puebla and Cotos Pass, known for significant elevation gains. While there are 4 easy routes, the majority are moderate (22) or difficult (19), offering demanding ascents and exhilarating descents.
Yes, many routes in the area are circular. For example, the popular Buitrago de Lozolla, Puebla de la Sierra, Horcajo de la Sierra – circular route is a challenging 95.9 km loop. Another option is the Navafría Pass – Buitrago de Lozoya loop from Buitrago del Lozoya, covering 68.4 km.
The routes consistently offer spectacular panoramic views of the reservoirs and the mountainous terrain of the Sierra de Guadarrama. You'll encounter diverse landscapes, from pine and oak forests to ash and holm oak trees. Historic towns like Buitrago del Lozoya, with its well-preserved medieval walls, also provide cultural points of interest to explore during your ride.
The Sierra de Guadarrama region offers good road conditions throughout much of the year. However, given the presence of mountain passes and significant elevation, spring and autumn generally provide the most pleasant temperatures for challenging climbs. Summer can be warm, especially at lower elevations, while winter may bring colder temperatures and potential snow at higher passes.
While many routes feature challenging climbs, there are 4 routes classified as easy, which might be more suitable for families or those looking for a less strenuous ride. These routes often follow flatter sections or less demanding terrain, allowing for a more relaxed experience.
Yes, the region includes historic towns like Buitrago del Lozoya and other villages within the Lozoya Valley. These towns often have cafes, restaurants, and other amenities where cyclists can refuel and rest. Planning your route to pass through these settlements can enhance your cycling experience.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 29 reviews. Reviewers often praise the challenging mountain passes, the diverse and scenic landscapes, and the panoramic views of the reservoirs and surrounding peaks. The good road conditions are also frequently highlighted.
Generally, no specific permits are required for road cycling on public roads in the Sierra de Guadarrama. However, it's always advisable to respect local regulations, especially if you venture into protected natural park areas, and to stay on designated routes.
Parking is typically available in the towns and villages surrounding Embalse de Río Sequillo, such as Buitrago del Lozoya. Many routes start from these locations, offering convenient access to parking facilities. It's recommended to check specific starting points for available parking options.
Yes, towns like Buitrago del Lozoya are accessible by public transport, primarily buses from Madrid. Some routes, such as the Plaza de España, Rascafría – Cotos Pass loop from Estación Gargantilla-Lozoya, even start near train stations or bus stops, making it feasible to reach the area without a car.
While popular passes like Puerto de la Puebla and Cotos Pass are frequented by cyclists, the extensive network of roads in the Sierra de Guadarrama offers many options. Exploring routes that venture slightly off the most well-known climbs or riding during off-peak hours can lead to a more tranquil experience.


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