4.5
(21)
139
riders
9
rides
Gravel biking around Le Mas-D'Azil offers diverse terrain within the Ariège department of southwestern France. The region is characterized by its varied topography, including the Arize River valley, the unique Grotte du Mas-d'Azil natural tunnel, and the green hills of the Massif Plantaurel. Riders can navigate a network of trails that traverse slopes, hills, and forests, providing views of the Pyrenees. This area provides a compelling environment for no traffic gravel bike trails, with routes often utilizing old railway lines and offering segments suitable for gravel bikes.
Last updated: August 29, 2026
4.9
(11)
67
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
35
riders
142km
07:29
1,050m
1,050m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(2)
11
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
37.2km
02:10
360m
360m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
64.2km
04:48
1,510m
1,510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Trailhoulet du Vernajoul 10.5 kms
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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.
1
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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.
1
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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.
3
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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
1
0
There are currently 4 curated no-traffic gravel bike trails around Le Mas-d'Azil in this guide, offering a range of distances and difficulties for you to explore the region's unique landscapes.
The terrain around Le Mas-d'Azil is diverse, ranging from greenways developed along old railway lines to more challenging routes with significant climbs and descents. You'll encounter unpaved sections, forest roads, and paths through varied landscapes, including the Arize Valley and the Massif Plantaurel, offering views of the Pyrenees.
Yes, for a more moderate and accessible experience, consider the The tunnels of Véloroute 81 – Old Rimont Station loop from Castelnau-Durban. This route covers 32.5 km with 269 meters of elevation gain, making it a good option for those looking for a less strenuous ride on traffic-free paths.
Many trails offer stunning natural sights. You can experience the unique Grotte du Mas-d'Azil, where the Arize River and a road pass directly through the cave. Other highlights include the serene Lac de Mondély and various sections of the Foix–Saint-Girons Greenway, which features old railway tunnels.
Absolutely. For a significant challenge, the Col de la Crouzette (1245 m) – Old metal bridge loop from Cadarcet is a difficult 64.2 km route with over 1500 meters of elevation gain. Another demanding option is The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban, spanning 80.7 km with 663 meters of ascent.
The komoot community highly rates the gravel biking experience in Le Mas-d'Azil, with an average score of 5.0 stars. Reviewers often praise the region's quiet, traffic-free paths, the unique experience of cycling through the Grotte du Mas-d'Azil, and the breathtaking views of the Pyrenees.
Yes, all the routes featured in this guide are circular, allowing you to start and end your ride in the same location. For example, the Old Rimont Station – The tunnels of Véloroute 81 loop from Lescure is a moderate 36.9 km circular route.
The region is generally pleasant for gravel biking from spring through autumn. Spring brings lush greenery, while autumn offers beautiful foliage. Summers can be warm, but the shaded forest sections and the cool air inside the Grotte du Mas-d'Azil provide relief. Always check local weather conditions before heading out.
Beyond the natural wonders, the region is rich in history. The Grotte du Mas-d'Azil is also a significant archaeological site with a museum nearby. You might also encounter well-preserved dolmens along certain trails, offering a glimpse into prehistoric times.
As Le Mas-d'Azil is situated within the Pyrénées Ariégeoises Natural Park, you have a good chance of spotting local wildlife, especially in the ancient oak forests. Keep an eye out for deer and wild boar, as well as various bird species that inhabit the diverse landscapes of the park.
Many routes in the region provide stunning vistas. The varied topography, including slopes, hills, and forests, frequently opens up to offer breathtaking views of the Pyrenees mountains. Routes with higher elevation gains, such as the Old Rimont Station – The tunnels of Véloroute 81 loop from Castelnau-Durban, often reward riders with expansive panoramas.


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