Highlight • Summit
Hiking
5.0
(23)
Alpine skiing
5.0
(1)
Running
5.0
(1)
Pico Tres Mares, also known as Pico Tresmares, is a remarkable summit nestled in the Cantabrian Mountains, specifically within the Sierra de Híjar. Located on the border between Cantabria and Castile and León, in the Palencia Province of Spain, this peak stands at an elevation of approximately 2,171 to 2,175 meters above sea level. Its most distinctive feature, and the origin of its name, is its unique hydrological divide: waters from its slopes flow into the Atlantic Ocean, the Cantabrian Sea, and the Mediterranean Sea, making it a rare geographical wonder.
Visitors consistently praise the expansive and unforgettable panoramic views from the top of Pico Tres Mares. From this natural balcony, you can gaze upon the rugged beauty of the Picos de Europa National Park, the Montaña Palentina Natural Park, and the verdant valleys of Campoo and Saja. On exceptionally clear days, the distant Cantabrian Sea is even visible, offering a truly spectacular vista that many describe as a highlight of their mountain adventures.
The climb to Pico Tres Mares is generally considered a straightforward hike with moderate elevation gain, making it accessible for many. The terrain features a rocky crest composed of Triassic quartzite conglomerates, so sturdy footwear is advisable. Given its mountain environment, preparing for changeable weather conditions is essential, regardless of the season. The summit is conveniently located very close to the Alto Campoo ski resort, which also serves as a common starting point for routes.
Pico Tres Mares offers diverse activities throughout the year. During the warmer months, it transforms into a paradise for hikers, mountain bikers, and nature photographers seeking a tranquil retreat amidst alpine meadows and diverse wildlife. In winter, its proximity to the Alto Campoo ski resort makes it a prime location for snow sports, with some ski slopes extending right up to the peak. The best season to climb Pico Tres Mares depends on your preferred activity, with summer and early autumn ideal for hiking, and winter for snowshoeing or skiing.
Reaching the summit of Pico Tres Mares rewards you with a profound sense of accomplishment and unparalleled views. Hikers often speak of the feeling of being above a "sea of clouds" on certain mornings, adding to the magical experience. The sheer scale of the landscape, encompassing multiple mountain ranges and distant seas, creates truly standout moments for anyone who makes the journey.
Whether you are looking for challenging routes to the summit or more leisurely walks in the surrounding area, there are many options to explore. You can discover a variety of hiking trails to Pico Tres Mares, suitable for different fitness levels, from beginner hikes to more demanding ascents. To plan your visit and find the perfect route for hiking, mountain biking, or even winter sports, you can explore the numerous options available on komoot.
Tips
December 23, 2022
Hiking

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Nearby routes
Best routes near Tres Mares Peak

5.0
(3)
25
hikers
8.51km
02:38
320m
320m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

7
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

4.5
(4)
81
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
Details
Informations
Elevation 2,110 m
Weather
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Saturday 16 May
8°C
2°C
54 %
Additional weather tips
Max wind speed: 10.0 km/h
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Pico Tres Mares is exceptionally unique due to its hydrological significance. It is the only mountain in Spain where waters from its slopes drain into three different seas: the Atlantic Ocean (via the Duero River), the Cantabrian Sea (via the Nansa River), and the Mediterranean Sea (via the Ebro River). This natural phenomenon is the origin of its name, meaning 'Peak of Three Seas'.
While the general ascent to Pico Tres Mares is considered straightforward with moderate elevation gain, specific routes can vary in difficulty. For beginners and families, it's advisable to choose well-marked trails starting from the Alto Campoo ski resort area, as these often have less challenging gradients. Always check route details and conditions before heading out.
The most common starting point for hikes to Pico Tres Mares is near the Alto Campoo ski resort. Parking facilities are available there, but during peak seasons or busy weekends, especially in summer or winter, parking spots can fill up quickly. Arriving early in the morning is highly recommended to secure a convenient spot.
Yes, Pico Tres Mares is a popular destination for winter activities. Its proximity to the Alto Campoo ski resort means it's well-suited for snowshoeing and even ski touring, with some ski slopes extending towards the peak. However, winter conditions can be challenging, requiring appropriate gear, experience, and careful monitoring of weather forecasts and avalanche risk.
From the summit, you are treated to breathtaking panoramic views. On clear days, you can see the majestic Picos de Europa, the Montaña Palentina Natural Park, and the green valleys of Campoo and Saja. It's often described as a 'natural balcony' offering expansive vistas, and on exceptionally clear days, the distant Cantabrian Sea can even be spotted.
The name 'Pico Tres Mares' is a relatively recent designation, coined in the late 19th century by historian Ángel de los Ríos to highlight its unique hydrological divide. Historically, the summit was known by other names such as 'Pico Negro' (Black Peak) or 'Pico de los Asnos' (Peak of the Donkeys). The region also has a long history of human activity, marked by ancient shepherd routes.
Given its location adjacent to the Alto Campoo ski resort, you can find amenities such as cafes, restaurants, and accommodation options within the resort area, especially during the ski season. For more extensive choices, nearby towns and villages in the Campoo region will offer a wider range of services.
Regardless of the season, sturdy footwear suitable for rocky terrain is essential. Layers of clothing are advisable due to changeable mountain weather. In warmer months, bring water, snacks, sun protection, and a map. For winter, add snowshoes or skis, poles, extra warm layers, and safety equipment like an avalanche beacon if venturing off marked trails.
Generally, dogs are welcome on most hiking trails in the Spanish mountains, including those around Pico Tres Mares. However, it's always best to keep them on a leash, especially in areas with livestock or wildlife, and to ensure you clean up after them. Check for any specific local regulations or protected areas that might have restrictions.
The time required to hike to the summit can vary depending on your starting point, fitness level, and chosen route. From the Alto Campoo ski resort, a round trip to the summit and back can typically be completed within a few hours for hikers with moderate fitness. Always factor in time for breaks and enjoying the views.