4.7
(167)
5,983
riders
86
rides
Road cycling routes around Real Sitio De San Ildefonso are characterized by the Sierra de Guadarrama mountains, offering diverse topography and significant elevation changes. The region features challenging mountain passes, extensive Valsaín pine forests, and the scenic Eresma River. This area provides varied terrain for cyclists, from moderate routes to those requiring very good fitness.
Last updated: October 7, 2026
5.0
(20)
196
riders
59.5km
03:15
1,140m
1,140m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
4.7
(3)
540
riders
103km
05:19
1,820m
1,820m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

215
riders
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
85
riders
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
129
riders
72.8km
03:38
1,120m
1,120m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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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.
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It's a classic climb in the Vuelta a España and in cyclotourism events like the Perico Delgado ride. The switchbacks section is very demanding: The first 4 km are gentle (2-3%). From the Puente de la Cantina (Cantina Bridge), ramps of 6-7% begin. Between km 6 and 8 are the five tightest bends, almost linked together, in a wooded area. The final kilometer has a steep ramp before reaching the summit.
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They are located on the Segovia side of the Navacerrada Pass, on the CL-601 road (formerly the N-601), which connects La Granja de San Ildefonso with the pass. Approximate altitude: between 1,400 m and 1,700 m. There are seven hairpin bends that traverse the foothills of the Sierra de Guadarrama mountain range. Total length of the pass on this side: 13.6 km, with a 669 m elevation gain and an average gradient of 4.9%. The steepest ramps are in the switchbacks, with gradients of 6-8% and occasional sections reaching 9%. Summit at the Navacerrada Pass (1,856 m).
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The name comes from the stone boundary markers erected in the 18th century to demarcate lands acquired by Charles III for hunting. During the Spanish Civil War, it was a strategic area with a Republican detachment stationed there. It formerly housed the Valcotos ski resort, which no longer exists.
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The Siete Revueltas are one of the most iconic sections of the road that ascends to the Navacerrada Pass. This section consists of seven hairpin bends, one after the other, marking the final and toughest part of the climb from the Segovia side.
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Good, shady area, water in Rascafría and upstream, well paved. Too busy on weekends.
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There's a fountain as you reach the top on the right. Follow the cobblestone path.
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It's not a very steep climb, but it's long. It gets tiring at the end.
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The region is characterized by the majestic Sierra de Guadarrama mountains, offering diverse topography with significant elevation changes. You'll find challenging mountain passes like the Navacerrada Pass, extensive Valsaín pine forests, and scenic river valleys along the Eresma River. Routes range from moderate rides to those requiring very good fitness.
There are over 75 road cycling routes available in Real Sitio De San Ildefonso, catering to various skill levels. This includes 8 easy routes, 56 moderate routes, and 14 difficult routes, ensuring options for every cyclist.
Yes, Real Sitio De San Ildefonso is renowned for its challenging mountain passes. The Navacerrada Pass is a classic climb, known from the Vuelta a España, featuring demanding switchbacks with significant elevation gain. Another notable option is the Fuenfría Pass. For a challenging loop, consider the Alto del León and Puerto de Navacerrada Loop, which covers nearly 96 km with over 1800 meters of elevation gain.
Beyond the stunning mountain scenery, you can cycle past the magnificent Royal Palace of La Granja de San Ildefonso with its famous gardens and fountains. Natural features include the extensive Valsaín pine forests and the scenic Eresma River. You might also encounter highlights like the Navacerrada Pass, or viewpoints such as Mirador de la Gitana.
The road cycling routes in Real Sitio De San Ildefonso are highly rated by the komoot community, with an average score of 4.5 stars from over 75 reviews. Cyclists often praise the diverse terrain, the challenging climbs, and the beautiful natural and historical surroundings.
Absolutely. For a moderate ride, you could explore the Vegas de Matute – Fuentemilanos loop from Navas de Riofrío-La Losa, a 45.9 km path with a notable elevation gain of nearly 600 meters. Another option is the View of Monte Atalaya – Stone Bridge of the Río Viejo loop from Palazuelos de Eresma, which is 49.1 km long with about 500 meters of climbing.
Yes, many of the road cycling routes in the area are designed as loops, allowing you to start and finish in the same location. Examples include the Alto del León and Puerto de Navacerrada Loop and the Cotos Pass – Navacerrada Pass loop from Puerto de Navacerrada, both offering comprehensive circular experiences through the mountains.
Yes, several routes will take you through the extensive and ecologically valuable Valsaín pine forests, located on the northern slopes of the Sierra. These forests offer a beautiful and often shaded cycling experience, with the scenic Eresma River flowing nearby.
The highest point in the Guadarrama range is Peñalara Peak, standing at 2,428 meters. While not directly accessible by road bike to the very summit, its dramatic high-mountain scenery, including a glacial cirque and impressive granite formations, significantly contributes to the overall natural beauty and challenging topography experienced by cyclists in the surrounding areas.
Beyond the natural beauty, you can visit the Royal Palace of La Granja de San Ildefonso, a magnificent Baroque palace with stunning gardens and fountains. Another cultural highlight is the Royal Glass Factory, an 18th-century building now housing a museum dedicated to glassblowing, offering a unique diversion during or after your ride.
The more difficult routes in Real Sitio De San Ildefonso feature significant elevation gains. For instance, the Alto del León and Puerto de Navacerrada Loop involves nearly 1900 meters of climbing, while the Cotos Pass – Navacerrada Pass loop from Puerto de Navacerrada has over 1250 meters of ascent.


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