Best mountain passes around El Boalo serve as gateways to the Sierra de Guadarrama, a mountain range known for its diverse natural landscapes. This region features prominent passes that offer both historical significance and recreational opportunities. The area is characterized by impressive pine forests, granite formations, and expansive massifs. It provides access to various trails and viewpoints within a mountainous environment.
Last updated: July 1, 2026
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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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There's a fountain as you reach the top on the right. Follow the cobblestone path.
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The Collado de los Pastores is a beautiful landmark in the Sierra de Guadarrama, located in the area of La Pedriza, near Manzanares el Real, in the Community of Madrid. This hill offers stunning panoramic views of the region, including the Bola del Mundo, the Cuerda Larga and the granite Pedriza. One of the popular routes to reach the Collado de los Pastores begins at the Canto Cochino car park. From there, you ascend the Cuerda de los Porrones, passing by the Mirador de la Pedriza, until you reach the hill.
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Collado de los Pastores, located in La Pedriza at 1750m, is an excellent place to enjoy the best views of La Pedriza in its entirety. It is right at the base of Pico de la Maliciosa.
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Luxurious balcony with views of La Pedriza del Manzanares
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Among the most popular mountain passes in the region are Collado de los Pastores, known for its stunning panoramic views of Bola del Mundo and La Pedriza, and Navacerrada Pass, a historic route and a popular starting point for various hiking trails.
The mountain passes around El Boalo are set within the Sierra de Guadarrama, offering diverse natural landscapes. You'll find impressive pine forests, granite formations, and expansive massifs. From places like Collado de los Pastores, you can see dense pine forests and the Santillana reservoir, while Morcuera Pass offers views of the majestic Peñalara Massif and the Madrid plain.
Yes, Navacerrada Pass holds significant historical importance, having served as a crucial route connecting Madrid and Segovia since 1788. It was also part of an optical telegraph line in the 19th century. The pass has a rich history of travel and commerce through the Sierra de Guadarrama.
The area offers a wide range of outdoor activities. For hiking, you can start from Navacerrada Pass to ascend peaks like Bola del Mundo and La Maliciosa, or explore the scenic Camino Shchmid route. Morcuera Pass is popular for diverse hiking trails, including the climb to La Najarra. Cyclists favor Morcuera Pass for its smooth roads, and the region also offers numerous road cycling, general cycling, and MTB trails.
The best time to visit depends on your preferred activities. For winter sports like skiing, sledding, and snowshoeing, the colder months with snowfall are ideal, especially at Navacerrada Pass and Morcuera Pass. For hiking and cycling, the cool, dry summers or the milder spring and autumn months offer pleasant conditions.
Yes, the region offers options suitable for families. While specific trails vary in difficulty, many areas around the passes provide accessible viewpoints and shorter walks. During winter, both Navacerrada Pass and Morcuera Pass are popular for family-friendly activities like sledding and snowshoeing.
The region is rich in stunning viewpoints. Collado de los Pastores offers exceptional panoramic views of Bola del Mundo, Cuerda Larga, and the granite Pedriza. From Views of the Castilian plateau near Navacerrada Pass, you can see the entire Valsaín valley and the plains towards Segovia.
Yes, you can find amenities near some passes. For instance, Cotos Pass features the Venta Marcelino restaurant, a classic spot for a meal or a warm broth. Morcuera Pass also has Fuente Cossío, a spring where visitors can enjoy refreshing mountain water.
The road ascending to Navacerrada Pass from the Segovia side features an iconic section known as Las Siete Revueltas. This section consists of seven hairpin bends, marking the final and often toughest part of the climb, famous among cyclists and locals alike.
Absolutely. The area around El Boalo and its mountain passes is excellent for mountain biking. You can explore routes like 'Views of La Pedriza – Collado de los Pastores loop' or 'Mingo Fountain – Pine of the Chain loop'. For more options, check the MTB Trails around El Boalo guide.
Visitors frequently praise the stunning panoramic views, the diverse hiking and cycling opportunities, and the natural beauty of the Sierra de Guadarrama. The historical significance of passes like Navacerrada Pass and the tranquility of less-traveled routes like Morcuera Pass also contribute to a highly appreciated outdoor experience.


See even more epic mountain passes by checking out these guides around El Boalo: