Best mountain passes around Aucun, a commune in the Hautes-Pyrénées department of France, serves as a base for exploring the Pyrenean region. The area is characterized by its mountainous terrain, offering access to several notable passes. These passes provide expansive views of valleys and peaks, attracting visitors interested in hiking and cycling. The landscape features diverse flora and fauna, including local livestock and birds of prey.
Last updated: June 26, 2026
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The view is less impressive than at Lac du Barbat, but it is the gateway to the Cauterets valley, with the Lys ridges (Cauterets resort) to the left and the Ilhéou lake below, which cannot be seen from this spot.
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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 slopes for mountain biking without a high level of difficulty.
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Nice alternative to the busier route of Soulor and Aubisque
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The mountain passes around Aucun offer expansive and picturesque views of the Pyrenean landscape. You can expect to see verdant valleys like the Ouzom, Arrens Marsous, Ossau, Cauterets, and Luz-Saint-Sauveur, along with towering peaks such as the Pic du Midi de Bigorre, the Gabizos, and the Pic de Ger. Diverse flora, including magnificent fields of azaleas in summer, and local wildlife like sheep, horses, cows, and birds of prey, add to the natural charm.
Yes, the region is renowned for cycling, especially given its association with the Tour de France. Col du Soulor and Col d'Aubisque are legendary passes for cyclists. The section connecting them, known as the Route from Soulor to Aubisque (Cirque du Litor), is particularly scenic with tunnels carved into the rock. For more cycling routes, you can explore the Cycling around Aucun guide.
The warmer months, particularly summer, are ideal for visiting the mountain passes. During this time, the weather is generally favorable for hiking and cycling, and you can witness the vibrant azalea fields near passes like Col de Riou. The presence of local livestock also adds to the experience in summer.
While many passes offer challenging routes, some areas provide easier trails suitable for families. For instance, Col du Soulor offers easy walking trails where you can encounter local animals. The Col de Riou also features a pleasant trail through woodlands and mountain pastures. When planning, look for routes described as 'moderate' or 'easy' in the Hiking around Aucun guide.
The mountain passes are home to diverse wildlife. You can frequently spot local livestock such as sheep, horses, and cows grazing in the pastures. The skies often feature birds of prey soaring overhead. If you're lucky, you might even encounter Pyrenean mountain dogs (Patous) guarding flocks, as mentioned in tips for Ilhéou Pass.
Many passes offer spectacular viewpoints. Col du Soulor provides panoramic views of peaks like the Pic du Midi de Bigorre and the Gabizos. From Col d'Aubisque, you can enjoy views of the Pic de Ger and the Ossau valley. The Pic de Pan, facing Col du Soulor, is also recommended for a unique panoramic view of the Azun valley.
Absolutely. The region around Aucun is excellent for hiking, with options ranging from easy walks to more challenging routes. Passes like Col du Soulor and Col de Riou offer accessible trails. For a comprehensive list of hiking routes, including those near the passes, check out the Hiking around Aucun guide.
The Ilhéou Pass, located at 2,256 meters, is a pedestrian pass connecting the valleys of Ilhéou and Estaing. It's known for its vast, green landscapes and spectacular views of both valleys. In high season, you might encounter herds of sheep and their guardian dogs (Patous), adding an authentic touch to the experience.
Yes, the Spandelles Pass is considered a jewel in the Pyrenees, often integrated into routes with Col du Soulor. While much of the drive is through the forest, the top offers a nice view to the west. It's appreciated for its quiet atmosphere and can be a great alternative to busier roads.
When cycling, especially on routes like the Route from Soulor to Aubisque (Cirque du Litor), be aware of tunnels that can be very dark. It's highly recommended to carry a decent light for safety. Also, be cautious of animal droppings on descents, as they can be hazardous.
Beyond hiking and cycling, the region offers opportunities for running. You can find various running trails, including loops around Soum Lake, Couraduque Pass, and Col des Bordères. For detailed routes and difficulty levels, refer to the Running Trails around Aucun guide.
The mountain passes around Aucun are highly appreciated by the komoot community. They have received over 400 upvotes and more than 140 photos have been shared, indicating their popularity and the positive experiences visitors have had.


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