4.8
(10)
181
hikers
24
hikes
Mountaineering around Lozoya Somosierra offers diverse terrain within the Comunidad de Madrid, encompassing the Sierra de Somosierra and the northern Sierra de Guadarrama. The region is characterized by high elevations, including Peñalara at 2428 meters, which features glacial cirques and moraines. Varied ecosystems range from pine and oak forests to alpine landscapes, with rivers and waterfalls contributing to the natural features.
Last updated: May 16, 2026
5.0
(2)
37
hikers
11.0km
04:36
570m
570m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
36
hikers
11.0km
04:36
570m
570m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5.0
(1)
16
hikers
11.3km
05:35
740m
740m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
16
hikers
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
11
hikers
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
8
hikers
14.6km
06:29
810m
810m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
7
hikers
7.77km
03:17
430m
430m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
5
hikers
5.62km
02:30
330m
330m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
5
hikers
8.58km
03:43
500m
500m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5
hikers
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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Strategic point from which excellent landscapes can be seen in the surrounding area.
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High and difficult peak in the Sierra de Madrid, especially with clouds and winds.
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To ascend it, you must carry the appropriate equipment in snow/ice, an ice axe and crampons. And be very careful with crevasses and cornices. You can also reach its summit from the normal route to Peñalara (Dos Hermanas).
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This reservoir is located in the beautiful Barranca valley
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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%.
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They're currently rehabilitating it. Small, but it could save you in a storm.
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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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There are over 30 mountaineering routes in Lozoya Somosierra, offering a wide range of experiences for different skill levels. The komoot community has explored these trails over 250 times, providing an average rating of 4.8 stars.
The region offers diverse terrain, from high mountain peaks like Peñalara, which reaches 2428 meters, to extensive forests of pine, oak, birch, and beech. You'll encounter glacial cirques, moraines, and varied ecosystems, providing a rich and challenging environment for mountaineering.
While many routes are moderate to difficult, some trails offer a good introduction to mountaineering. For example, the Zabala Refuge loop from Cotos is a moderate 7.7 km route with a manageable elevation gain, suitable for those looking to build experience.
Absolutely. Lozoya Somosierra is home to 22 difficult mountaineering routes. For a demanding ascent, consider the Poza de Sócrates – Cerro de Valdemartín loop from Cotos, a 14.5 km trail with over 800 meters of elevation gain, offering a significant challenge.
The region experiences mild summers, making late spring to early autumn ideal for most mountaineering. However, higher elevations receive regular snowfall from December to March, offering opportunities for winter mountaineering and snowshoeing for those with appropriate experience and gear.
Yes, the region is rich in natural beauty. You can find stunning viewpoints and unique geological formations. The Cotos Pass – Peñalara Summit loop from Cotos takes you to the highest peak in the Sierra de Guadarrama, offering panoramic views. You might also encounter glacial cirques and moraines, remnants of past glaciations, especially around Peñalara.
Yes, the region is known for its beautiful waterfalls. The Hielo Pulmones Waterfall loop from Cotos is a popular route that leads through varied mountain terrain to a notable waterfall. Other impressive waterfalls in the area include the Chorrera de los Litueros Waterfall, one of the highest in the Community of Madrid, and the Hervidero Waterfall.
While many mountaineering routes are challenging, some shorter, less strenuous paths can be enjoyed by families with older children. For a moderate option, the La Najarra – Refugio La Najarra loop from Puerto de la Morcuera is a 5.5 km route that offers beautiful scenery without extreme difficulty.
Many trails in Lozoya Somosierra, particularly those outside the most sensitive areas of the Sierra de Guadarrama National Park, are dog-friendly. However, regulations can vary, especially within the National Park boundaries. It's always best to check specific trail rules and keep dogs on a leash to protect wildlife and ensure a pleasant experience for everyone.
Yes, many of the mountaineering routes in Lozoya Somosierra are circular, allowing you to start and end at the same point. Examples include the popular Cotos Pass – Peñalara Peak loop from Cotos and the La Maliciosa (2,227 m) loop from Antiguo Apeadero de Dos Castillas.
Many popular trailheads, such as those near Cotos Pass and Antiguo Apeadero de Dos Castillas, offer parking facilities. However, during peak seasons or weekends, these can fill up quickly. It's advisable to arrive early or consider public transport options where available.
Most general hiking and mountaineering in the Sierra de Guadarrama National Park, which encompasses parts of Lozoya Somosierra, does not require a specific permit for access. However, certain activities or access to highly protected areas might have restrictions. It's always recommended to check the official National Park guidelines before your trip, especially for larger groups or specific activities.
The area is highly rated by the komoot community, with an average score of 4.8 stars from over 10 reviews. Reviewers often praise the stunning high mountain peaks, the diverse landscapes ranging from forests to alpine environments, and the well-maintained trails that offer both challenging ascents and rewarding views.


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