5.0
(1)
163
riders
31
rides
Road cycling around Castroserna De Abajo offers diverse landscapes, from river valleys to undulating countryside. The region features routes along the San Juan River, traversing limestone cliffs and dense juniper forests. Cyclists will encounter constant ascents and descents, providing varied terrain suitable for different fitness levels. The area's topography combines open stretches with hilly sections, making for engaging road cycling.
Last updated: May 19, 2026
5.0
(1)
18
riders
59.9km
02:43
650m
650m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
9
riders
70.0km
03:32
1,080m
1,080m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

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5
riders
45.9km
02:08
550m
550m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
3
riders
61.5km
03:01
800m
800m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
3
riders
35.4km
01:39
430m
430m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Sepúlveda is a spectacular medieval town that boasts a wealth of historical and artistic treasures: Plaza Mayor, Church of El Salvador, Church of Our Lady of the Rock, House of the Proaño or Moro family, Old Prison... It is surrounded by the Duratón and Caslilla rivers. A winding landscape of gorges and ravines gives this town a privileged position, designated a Historic-Artistic Site.
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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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It is an extraordinary and beautiful medieval Castilian town. But it has all its structures adapted to the modern age. Establishments and businesses abound everywhere. It is very well prepared for tourism.
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The old town of Sepúlveda with its stairs and alleys is recognized as a national cultural asset. The center of the old town is the Plaza Mayor, surrounded by old stone houses.
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A medieval village with cobbled streets whose mansions take you back to the 16th and 17th centuries. The Plaza Mayor with its characteristic colonnade and terraces is particularly worth seeing. The castle is privately owned and can only be visited with a guided tour at certain times. Since the village is so worth seeing, this can be overcome.
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This small town, with only 77 inhabitants, has a beautiful historic center. The Plaza Mayor stands out, with its cobbled streets, and the parish church of Nuestra Señora de la Asunción.
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There are over 30 road cycling routes to explore around Castroserna De Abajo, offering a wide variety of distances and difficulty levels to suit different preferences.
Road cycling in Castroserna De Abajo features diverse landscapes, including routes along the San Juan River, through dense juniper forests, and past stunning limestone cliffs. You'll encounter an undulating topography with constant ascents and descents, providing engaging and varied terrain.
Yes, there is at least one easy road cycling route available. While many routes involve moderate to difficult sections, beginners can find suitable options to enjoy the scenic countryside.
For experienced cyclists seeking a challenge, routes like the Navafría Pass – Puerto de Navafría loop from Casla offer significant elevation gains and demanding ascents. There are 9 difficult routes in total, providing plenty of options for a strenuous ride.
Many of the road cycling routes in the region are designed as loops, allowing you to start and finish in the same location. Examples include the Sepúlveda – Sepúlveda loop from San Pedro de Gaíllos and the San Pedro de Gaíllos – La Matilla loop from San Pedro de Gaíllos.
The region is rich in natural beauty. You can cycle past limestone cliffs that are home to griffon vultures, explore dense juniper forests, and follow the picturesque San Juan River. Highlights include the Vulture Cliff and sections of the Hoces del Duratón Natural Park.
Yes, you can integrate historical sites into your rides. Castroserna de Abajo itself features the Church of San Miguel Arcángel with Romanesque vestiges. Nearby, you might encounter the medieval Puente de Talcano or the historic town of Sepúlveda, known for its cobbled streets and the Church of San Salvador.
The limestone cliffs and gorges, particularly around the San Juan River and the Duratón River, are prime locations for birdwatching. Keep an eye out for griffon vultures and even Egyptian vultures. The Vulture Cliff and the Viewpoint of Virgen de la Peña are excellent spots.
The region offers pleasant cycling conditions for much of the year. Spring and autumn generally provide milder temperatures, ideal for longer rides. Summer can be warm, but early mornings or late afternoons are still enjoyable. Always check local weather forecasts before heading out.
Castroserna De Abajo and surrounding villages offer local amenities, including cafes and restaurants where you can refuel. For accommodation, you'll find options ranging from rural guesthouses to small hotels in the area, perfect for an overnight stay.
A great moderate option is the Sepúlveda – Sepúlveda loop from Prádena. This 61.2 km route takes you through varied terrain, including river valleys and open countryside, with a duration of approximately 3 hours.
The duration of routes varies significantly based on distance and difficulty. Moderate routes, such as the Sepúlveda – Sepúlveda loop from San Pedro de Gaíllos, typically take around 2 hours 45 minutes, while more challenging routes can extend to over 3.5 hours.
While the scenic roads are beautiful, road cycling routes are generally not ideal for cycling with dogs due to traffic and the nature of the activity. For dog-friendly outdoor activities, you might consider exploring walking or hiking trails in the natural parks nearby.


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