Best mountain passes around Alzen are found in the Ariège department of the French Pyrenees. This region is characterized by its challenging and scenic mountain passes, many of which are known for their inclusion in major cycling events. The landscape offers varied terrain, panoramic vistas, and routes suitable for different levels of experience. It is a destination for those seeking both physical challenge and natural beauty.
Last updated: October 13, 2026
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I climbed it from its easier side, the one that starts from Foix and stretches for 28 kms, crossing the Col de Marrous. It's a steady climb, with a few tough kilometers, and very pleasant. It's the side used by the Tour de France to descend it. The best thing about the Mur de Peguère are the views from its summit.
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I can only speak about my experience descending it from the south side, the one that starts in the village of Biert. It's simply a great pass, with a very tough final section, very similar to its close brother Mur de Peguère. With hardly any traffic, it has the appeal that the road is very narrow and very winding, which helps mentally.
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Nice steady and scenic climb to its summit. Good coffee at the arrival (with a view!)
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Very surprising, quite and beautiful area, didn't see cars in july for maaaany km, just cyclists.
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Be careful, since yesterday, June 19th, the descent to Rivèrenert has been freshly graveled and dangerous. I had a rear puncture due to small, sharp gravel sticking to the tire when braking. So, don't go crazy on this descent, friends.
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Because around 12pm and >31°C, the climb from Biert is mostly in the shade, and this pass generally ends a series of small linked passes (like Portech, Catchaudégué or La Core, Saraillé, etc.). And the challenge of the last 3 km is worth experiencing to strengthen your mental strength. Get to your pedals
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Magnificent pass with a splendid view! Clearly, it's worth climbing up there!
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The Ariège department, where Alzen is located, offers several beautiful passes. Col de Port is well-known for its scenic views and sloping sections. Another attractive option is Col de la Crouzette (1245 m), which provides tranquil, narrow roads and views of the surrounding area. For a more challenging experience with dramatic scenery, the Col de Pailhères, one of the few Pyrenean passes exceeding 2,000 meters, offers impressive vistas.
Yes, the region is famous for its challenging climbs. The Péguère Pass is notorious for its 'wall' section, featuring a 3.6 km stretch at a 12% gradient with portions as steep as 18%. Conquering this pass is considered a significant achievement for cyclists. The Col de Pailhères also presents a substantial challenge, with its ascent from Mijanès averaging 8.2% over 10.6 kilometers.
The area around Alzen is excellent for various outdoor activities. You can find numerous routes for cycling, mountain biking, and hiking. For cycling enthusiasts, there are routes like the 'Foix Castle – Col de Péguère loop' which is a difficult 68 km ride. Hikers can explore trails such as 'Le cap du Carmil – hike starting from Col des Marrous'. You can find more details on these activities and routes in the dedicated guides for Cycling around Alzen, MTB Trails around Alzen, and Hiking around Alzen.
Yes, for those seeking tranquility away from more frequented routes, Col de Légrillou (938 m) is a wild pass in the heart of the Ariège forest, described as very pleasant and little known. Similarly, the Col de la Crouzette offers a narrow, quiet road, ideal for a more intimate connection with the Pyrenean landscape.
The best time to visit the mountain passes in the French Pyrenees near Alzen is generally from late spring to early autumn (May to October). During these months, the weather is typically mild, and the passes are free of snow, making them ideal for cycling, hiking, and scenic drives. Some higher passes, like Col de Pailhères, might open later in the season due to snow.
Beyond the immediate vicinity of Alzen, the Carpathian Mountains in Romania, particularly near Alțina (another historical 'Alzen'), feature passes with significant historical and engineering marvels. The Transalpina, for instance, is arguably the oldest road over the Carpathian Mountains, with ancient origins as a Roman road and a transhumance route. It reaches the highest elevation of any mountain pass in Romania at Urdele Pass (2,145m).
When climbing from Tarascon towards Col de Port, there is a fountain available. It's located just beyond the Office de Tourisme building on the right (or just before the building if arriving from Massat). This allows you to fill your bottle with fresh, cold water.
Visitors appreciate the diverse experiences offered by the mountain passes. Many enjoy the physical challenge of climbs like the 'wall' section of Péguère Pass, often riding in the footsteps of the Tour de France. The natural beauty, panoramic views, and the tranquility of less-known routes like Col de la Crouzette are also highly valued by the komoot community.
While the passes directly around Alzen in the Pyrenees offer stunning mountain vistas, for dramatic natural beauty like gorges, you might look to the Carpathian Mountains. The Bicaz Canyon (Pângărați Pass / Bicaz Pass) in Romania carves through spectacular 1,000-foot limestone rocks, offering a unique experience through towering rock formations and featuring seven steps or waterfalls within the gorge.
In the broader region of the Carpathian Mountains, the Transfăgărășan in Romania is often considered one of the most beautiful roads in the world, famous for its numerous hairpin turns, tunnels, and viaducts, offering breathtaking views. The Transalpina, also in Romania, provides expansive, breathtaking views and a thrilling driving experience, making both premier destinations for scenic drives and motorcycle tours.
Road conditions can vary. Some passes, like Col de la Crouzette, have narrow and sometimes sketchy descents with loose surfaces, so caution is advised. Always be aware of recent maintenance, such as fresh gravel, which can affect tire grip. Higher altitude passes, especially in the Carpathians like Transfăgărășan and Transalpina, are typically closed during winter due to snow.


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