Best mountain passes around La Losa are situated in the province of Segovia, offering access to the Sierra de Guadarrama range. This region provides opportunities for outdoor activities and features natural beauty. The passes connect various towns and offer diverse terrain for exploration.
Last updated: May 20, 2026
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Beautiful trail that leaves Alto del León and descends to the Arcipreste or de los Lomitos path.
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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 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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It is halfway up the climb to La Peñota, so it is a good point to stop on days without a storm. On stormy days it may be too exposed to the wind to make a stop at this hill.
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The Cruz de la Gallega is a landmark on the route to the Matabueyes hill, located in the Valsaín mountains, near the Royal Site of San Ildefonso in the province of Segovia.
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The landscapes and the air you breathe here are incredible.
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Hill between the Matabueyes hill and the Alto de La Fuente del Pájaro. Necessary step to communicate the Palace of Valsaín with the Roman road, the Port of La Fuenfría and the Monastery of San Lorenzo del Escorial. During the Civil War, an important defensive position of the National Army.
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The region around La Losa, situated in the province of Segovia, offers access to several significant mountain passes within the Sierra de Guadarrama. Beyond those mentioned in the introduction, you can explore Puerto de Cotos, known for its hiking routes and winter sports access, and Puerto de la Morcuera, a classic route for road cycling and hiking with panoramic views. Puerto de Canencia is also valued for its tranquil landscapes and rich environment.
Yes, several passes offer family-friendly options. Navacerrada Pass is marked as family-friendly and provides access to various activities. Puerto de Cotos features an easy trail to the Laguna Grande de Peñalara, making it suitable for families. Additionally, Puerto de Canencia offers the Ruta de la Cascada de Canencia, an easy and charming trail to a waterfall.
The mountain passes around La Losa boast diverse natural beauty. From King's Pass, you can enjoy splendid views of the Cercedilla valley and the Madrid region. Puerto de Cotos offers access to the stunning Laguna Grande de Peñalara. Puerto de la Morcuera provides panoramic vistas stretching across the Madrid plain and majestic peaks like Cabezas de Hierro. Puerto de Canencia is surrounded by pine forests and features the Mirador de la Chorrera with views of the Canencia valley, especially vibrant in autumn.
The area is excellent for various outdoor activities. You can find numerous hiking routes, including challenging climbs to peaks like Bola del Mundo from Puerto de Cotos or Puerto de Navacerrada. For mountain biking, passes like Puerto de Linera are popular, and you can explore many MTB trails around La Losa. Road cyclists frequently tackle routes like Puerto de la Morcuera, and there are many road cycling routes around La Losa. For hikers, there are also dedicated mountain hikes around La Losa.
Yes, several passes are rich in history. Alto del León (also known as Puerto de Guadarrama) has been an important communication route since Roman times and features remnants of Spanish Civil War bunkers and trenches. Puerto de Cotos has historical significance with its name originating from small stone posts that marked the path through snow. Puerto de Linera is mentioned in 14th-century hunting records by Alfonso XI, adding to its historical interest.
The best time to visit depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and cycling, with autumn being particularly beautiful in areas like Puerto de Canencia due to vibrant foliage. Winter transforms the higher passes like Puerto de Cotos and Bola del Mundo into destinations for snow sports and challenging winter hikes, though conditions can be demanding due to ice and snow.
For those seeking easier experiences, Puerto de Canencia is a lower pass known for its tranquil atmosphere and the family-friendly Ruta de la Cascada de Canencia. Puerto de Cotos also offers an easy trail to the Laguna Grande de Peñalara. These provide a gentler introduction to the region's natural beauty without requiring extensive physical exertion.
Visitors frequently appreciate the stunning natural environment, the diverse range of outdoor activities, and the historical significance of the passes. For instance, the Navacerrada Pass is popular for cycling, with its long and progressive climb. The Alto del León is valued for its history, botanical curiosities, and good panoramic views, often serving as a starting point for hikes. The scenic beauty and the opportunity for tranquil escapes into nature are consistently highlighted.
Yes, some passes offer amenities. Alto del León has a restaurant famous for its barbecues. Navacerrada Pass also has facilities, including a cafe. Puerto de Cotos features a recreational area and a refuge. For other passes, it's advisable to check nearby towns like Miraflores de la Sierra or Rascafría for dining options.
Absolutely. The climb to Bola del Mundo (Alto de las Guarramillas) from Puerto de Navacerrada or Puerto de Cotos is described as very steep and challenging. For cyclists, Puerto de la Morcuera is a classic and iconic route, often included in the Vuelta a España. The section known as Las Siete Revueltas on the way up to Navacerrada Pass from the Segovia side consists of seven hairpin bends, marking a tough part of the climb with gradients reaching 9%.
Many of the passes are accessible by car, with parking often available, especially at popular spots like Alto del León and Puerto de Cotos. Public transport options may vary; some passes, like Puerto de Cotos, are well-known meeting points in the Sierra de Guadarrama, suggesting some level of accessibility. For specific routes and public transport details, it's recommended to check local transport information for the towns connected by the passes.
Marichiva Pass is a traditional pass located between the Fuenfría and Espinar valleys. It's marked by the red and white chevrons of the GR-10 long-distance trail on the popular Calle Alta forest track, following the route of the old Vereda del Infante. It's particularly popular among mountain biking enthusiasts for its picturesque setting and challenging terrain, reaching a height of about 1750 meters.


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