For titans only

Haute Route Molières/Besiberris

Are you ready to measure yourself against the giants? Overcome the barrier of 8,000 meters of positive elevation gain in a wild and technical environment. A circular high-mountain route designed for mountaineers seeking the ultimate physical challenge in the heart of the massif. Come and complete your eight-thousander in the Pyrenees.

CONQUER YOUR EIGHT-THOUSANDER

MOLIÈRES/BESIBERRIS

Only for titans: challenge the most epic summits of the Pyrenees.

Embark on a self-guided circular route through the heart of the Pyrenees. Between refuges, you will overcome sharp ridges and reachunparalleled views of Aneto, Maladetas and the Besiberris massif.

This is a challenge that will test your endurance, strength and determination.

Do you have what it takes to conquer the Pyrenees in its most challenging form? This circular Pyrenean route is for experienced mountaineers and adventurers in excellent physical shape, high mountain lovers looking to excel in an epic environment. Do you dare to undertake this self-guided tour and discover the true essence of the mountain?

Are you ready for an epic adventure?

MORE THAN AN EXPERIENCE

More than just walking, you embark on a unique experience that begins long before you take your first step on the mountain.

Safety at every step

You will feel safe thanks to the latest technology in real-time monitoring, which allows us to intervene quickly if something does not go according to plan.

LEARNING AT EVERY STEP

Learn and evolve as a mountaineer with the videos and trainings we offer you, improving your skills to enjoy every mountain adventure to the fullest.

DISCOVER OUR ROUTES

SELF-GUIDED

651,00 €

ALTA ROUTE Molières - Besiberris

Haute Route Molières - Besiberris

  • 6 stages
  • 81.2 Km
  • +8046m/-8004m
  • Difficulty: Very High

Are you ready to measure yourself against the giants? Overcome the barrier of 8,000 meters of positive elevation gain in a wild and technical environment. A circular high-mountain route designed for mountaineers seeking the ultimate physical challenge in the heart of the massif. Come and complete your eight-thousander in the Pyrenees.

393,00 €

ALTA ROUTE Molières - Besiberris

Tour de Mulleres

  • 3 stages
  • 48.4 Km
  • +4215m/-4210m
  • Difficulty: High

Travel along the rugged border between Catalonia and Aragon, enjoying spectacular views of the northern slopes of Mount Aneto. Experience the technical demands of the legendary Molières Marathon, adapted to a three-stage circular trek. An epic route where every meter of elevation gain counts towards completing your own personal "eight-thousander," dominating the untamed granite massif and the highest peaks of the Pyrenees.

397,00 €

ALTA ROUTE Molières - Besiberris

Besiberris Tour

  • 3 stages
  • 34.8 Km
  • +3425m/-3428m
  • Difficulty: High

Venture into the Besiberris massif and the Aigüestortes i Estany de Sant Maurici National Park to discover the granite giants that dominate the horizon. Conquer iconic peaks such as Besiberri Sud and explore wild terrain dotted with high mountain lakes. A technical and demanding 3-day circular route where each step brings you closer to completing your own personal "eight-thousander" in the most untamed and vertical sector of the Pyrenees.

What do routers say about their experience with Alta Ruta?

YOUR EXPERIENCES

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Ernesto Ginel's profile picture
Ernesto Ginel
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The route was a great experience, and the excellent organization behind it—especially with the self-guided option—gives you the peace of mind you need to focus solely on enjoying the mountains. You don’t have to worry about booking mountain huts, maps, GPS tracks, hazardous areas, etc.—you can just enjoy yourself, knowing that if any problems arise along the way, they’ll be there to help. It’s been fantastic to discover these areas of the Pyrenees (Los Perdidos and Moliere-Besiberris) with them and in this way.
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Anthony Grumbach's profile picture
Anthony Grumbach
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Patricia and her team at La Alta Ruta were wonderful to work with. They helped us plan and book a customized 9-day trek along La Alta Ruta de Los Perdidos, made the refuge reservations, assisted us with transportation to and from Bujarueles, and provided accurate information and GPX tracks for the trail. They were responsive, knowledgeable, and reliable. The background essays they shared in weekly emails before the trip deepened our appreciation of the route’s geology, history, and culture. With their GPX files, paper map, and brief orientation meeting, we completed the route on our own, never needing to contact them during our trek—though we were reassured to know we could reach out if we needed help during an emergency in a foreign country. We’ve planned many of our own backpacking routes, but it was helpful and important to have their experienced guidance regarding what was unfamiliar, foreign territory for us. There are trail junctions with alternative routes that present different challenges, levels of exposure, or views. And while we were often on clearly defined and well-maintained trails, at other times the trails were more primitive—somewhat like being on a well-established cross-country route in the U.S. wilderness but with trail markers and more cairns. The Alta Ruta de Los Perdidos is as beautiful and challenging as described in other online trip reports and reviews. We are experienced backpackers in our 60s who are in good physical condition but are not competitive athletes. On our 9-day itinerary in early September 2026, many days were pleasantly long and tiring, but we built in some easier days that gave us time to take a break from the bustling refugios at a hotel in Gavarnie, climb a peak, take a day hike on a side trail, or simply savor a fantastic view and a beer at a picnic table outside a refugio. We found the refugios to be a fun contrast to our usual, much more isolated backpacking at home. We made a lot of new friends from Spain and other countries. We still had plenty of peaceful time in the mountains to ourselves during our days on the generally uncrowded trails. There was drinking water at every mountain hut. But because these trails have been used by sheep and cattle herds for centuries, when we refilled our bottles from streams or springs during the day, we both filtered and treated the water, as La Alta Ruta advised. I highly recommend this route and working with La Alta Ruta to plan a self-guided trip. And judging by the very happy hikers we dined with one night—who were with one of La Alta Ruta’s local guides—I’d also recommend their guided tours if that’s your preference.
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Eva Rodriguez's profile picture
Eva Rodriguez
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Everything was great; our guide, Toño, was very helpful throughout and very knowledgeable. I really enjoyed both the guide and the rest of the group. I'll be back next summer to do the entire Alta Ruta.
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Julen Legorburu's profile picture
Julen Legorburu
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A wonderful experience on a beautiful route, very well organized
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Patxi's profile picture
Patxi
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At the end of August, six of us completed the Monte Perdido Tour, including the ascent of Monte Perdido. A wonderful experience and extremely professional organization!!!!
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Jaume Julibert's profile picture
Jaume Julibert
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In my case, the Alta Ruta de Molieres y Besiberris. A demanding route with technical sections that aren’t suitable for everyone. Top-notch organization: briefing, GPS tracking in case of any serious mishap or emergency, comprehensive information in the days leading up to the trip, daily monitoring, a phone line that answers any issues, alternative routes in case of bad weather, and services included at every overnight stop (mountain hut or hotel—and by the way, it’s a great idea to spend two nights in hotels); in other words, they take care of everything, and all you have to do is focus on the hike and enjoy “paradise.” A very secluded but incredibly beautiful route, covering three 3,000-meter peaks, with options to tackle a couple more along the same route. I’d do it again in a heartbeat!!! Thank you so much for everything!!!!
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Manuel Riveiro's profile picture
Manuel Riveiro
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A fantastic route—a hike to enjoy and have a wonderful experience