3.8
(8)
262
riders
23
rides
Gravel biking around Real Sitio De San Ildefonso is characterized by its location at the foothills of the Sierra de Guadarrama mountains, offering diverse natural landscapes. The terrain features significant elevation changes, ranging from gentle slopes to demanding climbs, with gradients occasionally reaching 9%. Cyclists can expect a mix of wooded areas, rugged terrain, and paths running parallel to the Eresma River. The region is nestled within the Segovian slope of the Guadarrama National Park, providing extensive trails and paths…
Last updated: May 21, 2026
3.5
(2)
52
riders
101km
08:05
1,380m
1,380m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
33
riders
57.1km
04:53
900m
900m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(2)
28
riders
46.2km
03:39
1,060m
1,060m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
3.3
(3)
34
riders
25.2km
01:48
610m
610m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
17
riders
108km
08:41
1,510m
1,510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Key Facts: Cela Sundial Location: It is located in the Pradera de Navarrulaque (Cercedilla), at an altitude of about 1,670 meters, right on the Carretera de la República. History: Inaugurated in 1995, it is a tribute to the writer (a great lover of the mountains and author of Cuadernos del Guadarrama) and to the first hikers who traversed these mountains. Curiosity: It is an analemmatic sundial. This means it does not have a fixed needle; you are the clock yourself. You have to stand on the current date marked on the ground, and your own shadow will indicate the time on the stone pieces surrounding you. Surroundings: It is on a beautiful route that passes by the Ducha de los Alemanes and the Miradores de los Poetas. I love this sundial in honor of Cela. It's super original because you interact with it to know the time. It's in a privileged spot in the Sierra de Cercedilla, surrounded by pine trees and with a lot of peace. A "rural monument" with a lot of charm that I never tire of visiting on my hikes through the Valle de la Fuenfría.
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Poetry with the best views of the sierra Climbing up to the Mirador de Vicente Aleixandre is, for me, one of the most inspiring experiences in Cercedilla. It's not just the hike through the Valle de la Fuenfría, which is beautiful, but the moment you reach that rock and read its sculpted verses while contemplating Siete Picos. You breathe in an incredible peace. It's the perfect place to stop, sit down to rest, and feel part of the landscape that the poet loved so much.
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Exceptional water, which even people from the village come to collect.
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It is located in the Sierra de Guadarrama mountain range, between the municipalities of Miraflores de la Sierra and Rascafría, in the Community of Madrid. From Miraflores de la Sierra (1200m), the route ascends approximately 600m over 10km (average gradient 4–6%), and after reaching the summit, it descends 13km to Rascafría (1150m) with a gradient of 4.5–7%.
6
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A comfortable trail with incredible views. As an added bonus, you can descend to the Mojonavalle waterfall. A truly beautiful cascade.
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The Vicente Aleixandre viewpoint, or Poets' Viewpoint, offers an unbeatable view of the entire mountain range. Cercedilla lies at our feet, the Bola del Mundo peak rises above, and some verses are engraved on the rock to commemorate the recitals that were once held there.
1
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Fountain with fresh, good water. A must-stop before starting the Fuefría route.
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Beautiful place and beautiful river, with water, as it was flowing today.
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There are 18 dedicated no-traffic gravel bike trails around Real Sitio de San Ildefonso. These routes offer a mix of moderate and difficult options, ensuring a suitable challenge for various skill levels.
The terrain varies significantly, reflecting the region's location at the foothills of the Sierra de Guadarrama. You'll encounter a mix of well-marked paths, tracks, and trails, often with significant elevation changes. Expect gradients of 6-8%, occasionally reaching 9% in some switchbacks, particularly around the Navacerrada Pass. The landscape transitions from wooded areas within the Montes de Valsaín to more rugged mountain terrain.
While many routes feature challenging climbs, some sections or shorter loops can be suitable for families with older children or those comfortable with moderate distances. Look for routes that stick to the less steep sections of the Montes de Valsaín or follow the River Eresma for a gentler experience. Always check the route's elevation profile and distance before heading out with family.
Many natural areas within the Sierra de Guadarrama National Park and Montes de Valsaín are dog-friendly, but regulations can vary. It's generally recommended to keep dogs on a leash to protect local wildlife, especially in areas where deer, wild boar, and fallow deer are common. Always check specific park or trail rules before you go.
The region is rich in natural beauty. Depending on your chosen route, you might encounter stunning views from the Mirador de la Gitana, or pass by the unique granite boulders of La Cueva del Monje. The Sierra de Guadarrama National Park itself offers numerous scenic spots, including the Peñalara Glacial Cirque and the majestic Seven Peaks.
Absolutely. The area is famous for its historical sites. You can explore the magnificent Royal Palace of La Granja de San Ildefonso with its extensive gardens and fountains, or visit the Royal Factory of Glass and Crystals. The Arco de la Fuencisla – Turégano Castle loop from Segovia, for instance, offers a blend of cycling and historical exploration, while the Royal Palace of Riofrío is nestled within an oak grove, offering a cultural stop amidst nature.
Spring and autumn are generally the best seasons for gravel biking. The weather is milder, and the natural landscapes are particularly vibrant. Summer can be hot, especially at lower elevations, while winter can bring snow and ice to higher mountain passes like Navacerrada, making some trails impassable or requiring specialized equipment.
Yes, many of the no-traffic gravel trails are designed as loops, allowing you to start and end at the same point. For example, the Plaza de España, Rascafría – Matafrailes Bridge loop from Rascafría is a challenging circular route, as is the La Morcuera Pass – Canencia Pass loop from Rascafría.
Parking is generally available in and around Real Sitio de San Ildefonso and at various trailheads leading into the Sierra de Guadarrama and Montes de Valsaín. For routes starting from towns like Rascafría or Segovia, designated parking areas are usually available. Always check local signage for specific parking regulations and fees.
Yes, public transport can be a viable option. Real Sitio de San Ildefonso is accessible by bus from Segovia, which in turn has train connections to Madrid. Some routes, like the Cercedilla train station – Pine of the Chain loop from Cercedilla, even start directly from a train station, making them convenient for those using public transport.
The area is highly rated by the komoot community, with an average score of 3.8 stars. Reviewers often praise the stunning natural scenery, the challenging climbs and descents, and the feeling of immersion in nature away from traffic. The diverse terrain and the blend of natural and historical sights are frequently highlighted as major draws.
Generally, no specific permits are required for cycling on marked trails within the Sierra de Guadarrama National Park, provided you stick to designated routes. However, it's always advisable to check the official park regulations for any updates or specific restrictions, especially for sensitive ecological areas or during certain seasons.


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