Mountain passes around Asson, a commune in the Pyrénées-Atlantiques department of southwestern France, offer access to the Pyrenean landscape. The region features diverse terrain, from forested valleys to high-altitude peaks. These passes provide routes through the mountains and serve as viewpoints for the surrounding natural environment. The area is known for its challenging climbs and scenic routes.
Last updated: July 10, 2026
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A gentle, narrow climb. From the west, the gradient is consistently high, with no respite. The asphalt is in good condition on both sides, making it easy to descend as well.
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one of the most iconic and scenic climbs you can do IMHO. Beautiful 360 degree outlook at the top
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Nice alternative to the busier route of Soulor and Aubisque
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Once you've done that, you'll want to drive even more mountains, it's just wonderful.
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One of the most beautiful roads in the Pyrenees
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Start of the iconic 15 km climb with 1100 altitude meters
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The region around Asson features several significant mountain passes. Among them are Col du Soulor, an emblematic pass of the Pyrenees and the Tour de France, offering stunning mountain panoramas. Another must-see is Col d'Aubisque, known for its exceptional views of the Pic de Ger and the Ossau valley. Additionally, the Route from Soulor to Aubisque (Cirque du Litor) provides a scenic journey with views of the Cirque du Litor and tunnels carved into the rock.
From its altitude of 1,709 meters, Col d'Aubisque offers exceptional panoramic views, including the Pic de Ger and the surrounding Ossau valley. The slope towards Soulor also provides a magnificent belvedere over the Litor cirque.
Yes, Spandelles Pass is often described as having hardly any traffic. While much of the drive is through the forest, you'll find a nice view at the top, primarily to the west. It's a quiet corner that can be integrated into a round trip with Col du Soulor.
The area around Asson offers a variety of outdoor activities. You can explore numerous mountain hikes, such as the 'Pic du Pibeste – Col des Portes loop' or the 'Col du Soulor – Soum Lake loop'. For runners, there are trails like the 'View from the Oppidum loop'. Cyclists can tackle challenging routes like the 'Soulor Pass loop' or the 'Col du Soulor – Col d'Aubisque loop'. You can find more details on these activities in the Mountain Hikes around Asson, Running Trails around Asson, and Cycling around Asson guides.
The ascent of Col d'Aubisque from Laruns is considered a challenging climb. It covers 16.6 kilometers with an average gradient of 7.17% and is classified as a special category climb in the Tour de France. It's known for being a brutal but rewarding climb with incredible views.
When cycling the Route from Soulor to Aubisque (Cirque du Litor), be aware that there are tunnels directly dug into the rock. It's advisable to carry a decent light, as some sections can be absolutely dark. Also, be cautious of animal droppings on the descent, as they can be hazardous.
Col d'Isou, situated at approximately 847 meters, is accessible via various hiking trails, often described as a forest track that can be muddy. It connects to the Cabane de Tachouère and is part of scenic loops, such as the 'Col d'Isou – Grotte de Nabails loop' starting from Arthez-d'Asson. It offers a more forested experience, making it an interesting option, especially during winter when higher peaks might be inaccessible.
Merdanson Peak (Pic du Merdanson), reaching 1540 meters, offers an adventurous and difficult hike with significant elevation changes. The routes traverse diverse landscapes, from forests to high-altitude pastures. The summit provides an exceptional panoramic viewpoint, making it ideal for those seeking challenging hikes and extensive views of the Pyrenean landscape.
While specific best times for all passes are not detailed, the region offers diverse experiences. During winter, lower passes like Col d'Isou can be a good option when higher peaks are inaccessible. Generally, for higher passes and more challenging routes, late spring to early autumn typically offers the most favorable weather conditions for hiking.
While many mountain passes in the immediate vicinity of Asson are known for challenging climbs, the broader region offers a range of hiking difficulties. For specific family-friendly options, it's recommended to look for trails with 'easy' or 'moderate' difficulty ratings in nearby hiking guides, such as the 'Col du Soulor – Soum Lake loop' which is rated as easy.
Col du Soulor is popular due to its status as an emblematic pass of the Pyrenees and a frequent feature in the Tour de France. It offers beautiful mountain panoramas, especially from its ascent from the east, and forms a wonderful viewpoint over the Litor cirque when heading towards Col d'Aubisque. Visitors appreciate the beautiful scenery, though the views often require a challenging climb.
Yes, you can find more information about the Pic du Merdanson and its hiking itineraries on external tourism sites. For example, you can explore details about the 'Le Pic du Merdanson' itinerary via tourisme-bearn-paysdenay.com or tourisme64.com.


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