4.1
(17)
107
riders
6
rides
No traffic gravel bike trails around Suzan offer diverse terrain, characterized by river valleys, historic greenways, and ascents into the foothills. The region features routes that utilize former railway lines, providing gentle gradients and unique historical elements like tunnels and viaducts. Gravel bikers can expect a mix of forested sections, open landscapes, and paths alongside waterways. The area provides options for both moderate and more challenging rides, focusing on car-free or low-traffic environments.
Last updated: July 6, 2026
4.9
(11)
67
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(3)
14
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(2)
10
riders
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.
2
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Suzan
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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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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Old little station that reminds us of another time!
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This is the longest tunnel on the greenway: it's super fun to go through. Be careful: it's a bit chilly!
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A very beautiful viaduct, it's a bit impressive and truly unusual on a greenway. The train used to go there, now the bikes go there!
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There are 5 carefully curated no-traffic gravel bike trails in the Suzan area, perfect for exploring the region without vehicle interference. These routes are designed to offer a peaceful and immersive cycling experience.
While all the listed routes are categorized for mountain biking, their difficulty grades range from moderate to difficult. For those seeking a less strenuous ride, the Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Saint-Martin-de-Caralp and The tunnels of Véloroute 81 – Old Rimont Station loop from Castelnau-Durban are both rated as 'moderate' and offer excellent traffic-free experiences.
The no-traffic gravel bike trails in Suzan primarily follow greenways and former railway lines, such as the Véloroute 81. This means you can expect well-maintained gravel surfaces, often with gentle gradients. Many routes feature unique elements like historic tunnels and viaducts, providing a varied and engaging ride through the scenic Ariège landscape.
Yes, all the no-traffic gravel bike routes featured in this guide are circular loops. This allows you to start and end your ride at the same point, making logistics easier. For example, the The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban is a fantastic circular option.
The trails offer a rich blend of natural beauty and historical interest. You'll ride along the Foix–Saint-Girons Greenway, pass through impressive V81 Greenway Tunnels, and enjoy views of the surrounding forests and valleys. Some routes may also bring you close to the Lac de Mondély or offer glimpses of the Grotte du Mas-d'Azil.
Absolutely. For experienced gravel bikers looking for a challenge, routes like the Col de la Crouzette (1245 m) – Old metal bridge loop from Cadarcet offer significant elevation gain (over 1500m) and longer distances, providing a demanding yet rewarding traffic-free experience. The The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban is also a substantial ride at over 80 km.
The spring and autumn months generally offer the most pleasant conditions for gravel biking in Suzan, with mild temperatures and beautiful scenery. Summer can be enjoyable, but be prepared for warmer weather. Winter riding is possible, especially on the greenways, but check local conditions for ice or snow, particularly at higher elevations.
Yes, several routes are well under this distance. The Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Saint-Martin-de-Caralp is approximately 33 km (20.5 miles) and the The tunnels of Véloroute 81 – Old Rimont Station loop from Castelnau-Durban is about 32 km (20 miles), both offering excellent traffic-free options for shorter rides.
The komoot community highly rates the no-traffic gravel biking in Suzan, with an average score of 4.8 out of 5 stars. Reviewers often praise the tranquility of the greenways, the unique experience of riding through old railway tunnels, and the stunning natural beauty of the Ariège region, all without the worry of vehicle traffic.
Many of the routes, particularly those starting from towns like Castelnau-Durban or Cadarcet, offer convenient parking options. Since these are circular routes, you can typically park your vehicle at the starting point and return to it after your ride. Always check specific route details for recommended parking areas.
While the main greenways are popular for good reason, the interconnected network of smaller forest roads and paths, often part of the larger loops, can feel like hidden gems. Exploring routes that venture into areas like the Forest Road of the Consulat de Foix State Forest or near the Croix d'Esplats and Forest Road of Col de la Rille via Balès can offer a sense of discovery away from more frequented sections.


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