4.5
(78)
3,423
riders
68
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: May 6, 2026
48
riders
95.9km
05:08
1,890m
1,890m
This difficult 59.6-mile road cycling route through Sierra de Guadarrama National Park features two major mountain passes and reservoir view
42
riders
45.9km
02:10
600m
600m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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32
riders
67.7km
03:46
1,260m
1,260m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
3.0
(1)
22
riders
23.7km
01:11
310m
310m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
4.3
(3)
22
riders
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
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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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There's a fountain as you reach the top on the right. Follow the cobblestone path.
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No water comes out, mind you. Even so, it's a legendary spot in the Navacerrada Pass.
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Mandatory stop on the way down to refill water. (Or uphill, but you have little left and you have to suffer until the end)
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One of the most beautiful and toughest passes in the mountains. Beautiful climb but little shoulder and a lot of traffic on weekends. There are a lot of bikes so it is not a problem because it is respected, but it is good to know. Be patient, and enjoy the wind, that stretch is tough but the reward is closer.
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A small but charming 16th century chapel, with yellow stucco, in the small town of Ortigosa del Monte.
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The Church of San Juan Evangelista de La Losa is located on a small hill above the small town. There is a small park surrounded by some of the oldest buildings in the area, including an old cemetery.
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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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