3.7
(10)
220
riders
7
rides
Gravel biking around Grézian offers routes through the mountainous terrain of the Pyrenees, characterized by significant elevation changes and scenic passes. The region features a mix of open mountain landscapes and forested sections, providing varied surfaces for gravel cyclists. Routes often traverse valleys and climb towards high mountain cols, presenting challenging ascents and descents. Grézian, nestled in the Aure Valley and bordered by the Neste d'Aure river, provides access to diverse landscapes from gentle slopes to Pyrenean foothills.
Last updated: August 15, 2026
20
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
14
riders
66.9km
05:25
1,730m
1,730m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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43
riders
80.7km
06:20
2,240m
2,240m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.7
(3)
10
riders
13.2km
00:55
140m
140m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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I ride this pass once a month by mountain bike since November 2025, this pass is closed to cars because of the snow but what a chance to see deer and does running in the snow. 😉
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Pass with a beautiful view! If you go up the Hourc road, it's a steep climb at the end, but it's worth it!
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Pleasant and legendary climb used by the Tour de France
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Pleasant and legendary climb used by the Tour de France
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Difficult pass at first, especially in the heat. Easier after the first third. Be careful of the unlit tunnel 1 km from the summit. For added peace and quiet, the road leading up to the pass is closed to traffic from 4 p.m. to 6 p.m.
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Here begins the official start of the climb to the Hourquette d'Ancizan, made in 2024 on the Tour de France. On the program, eight kilometers at an average of 5%.
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Yes, Grézian offers some options for less experienced riders. For example, the Panorama vers Loudervielle – Lake Génos loop from Génos is an easy 8.2-mile (13.1 km) route with minimal elevation gain, perfect for a relaxed ride.
Advanced gravel bikers will find Grézian's routes quite demanding, characterized by significant elevation changes and high mountain passes. Many routes are classified as difficult, such as the Hourquette d'Ancizan – Col d'Aspin loop from Vignec, which covers 70.0 miles (112.7 km) with over 3,400 meters of ascent, traversing two iconic Pyrenean cols.
Gravel bike routes in Grézian vary significantly in length and duration. You'll find shorter rides like the 8.2-mile (13.1 km) Panorama vers Loudervielle – Lake Génos loop from Génos, which takes around 1 hour 4 minutes. Longer, more challenging routes, such as the Col d'Aspin – Hourquette d'Ancizan loop from Cadeilhan-Trachère, can be up to 41.6 miles (67.0 km) and take over 6 hours to complete.
The best time for gravel biking in Grézian is typically from late spring to early autumn (May to October). During these months, the weather is generally more stable, and mountain passes are clear of snow. Winter riding can be challenging due to snow and ice, especially at higher elevations.
Yes, many of the gravel bike routes in Grézian are designed as loops, allowing you to start and finish in the same location. Examples include the Col d'Aspin – Hourquette d'Ancizan loop from Cadéac and the Saint Lary Bike Park – Portet Pass loop from Cadeilhan-Trachère.
The gravel bike trails in Grézian offer stunning natural beauty and notable landmarks. You can expect to see iconic mountain passes like Col d'Aspin and Hourquette d'Ancizan, as well as serene lakes such as Lac de Payolle and Lake Bareilles. The routes also pass through charming villages and forested sections.
While specific parking facilities aren't detailed for every route, many gravel bike tours in Grézian start from villages like Vignec, Cadeilhan-Trachère, Cadéac, or Génos. These towns typically offer public parking options, often near the starting points of the trails.
The gravel biking experience in Grézian is highly rated by the komoot community, with an average score of 4.0 stars from over 10 reviews. Riders frequently praise the challenging mountain passes, the breathtaking Pyrenean scenery, and the varied terrain that includes both open mountain landscapes and tranquil forested sections.
Absolutely. The mountainous terrain of Grézian means many routes offer spectacular viewpoints. Passes like Col d'Aspin, Hourquette d'Ancizan, and Portet Pass are renowned for their panoramic vistas of the Pyrenees. Lakes such as Lac de Payolle also provide picturesque settings for a break.
There are 8 gravel bike trails documented around Grézian, catering to various skill levels. This includes 1 easy route and 7 difficult routes, offering a wide range of experiences for gravel cyclists.
While the main passes are well-known, the extensive network of forest paths and less-traveled mountain roads often reveal quieter sections. Exploring routes that connect smaller villages or venture deeper into the valleys can lead to discovering less frequented, yet equally rewarding, gravel sections away from the more popular climbs.


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