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France
Occitania
Foix

Alzen

The best traffic-free bike rides around Alzen

3.9

(18)

109

riders

7

rides

Gravel biking around Alzen offers a diverse landscape for exploration. The region features a mix of terrain, including forest trails, white roads, and paths across fields, providing varied experiences for cyclists. The area is characterized by its river valleys and surrounding hills, which contribute to the varied elevation profiles of the routes. These natural features create an environment suitable for no traffic gravel bike trails.

Best no traffic gravel bike trails around Alzen

  • The most popular no traffic gravel bike trail is The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban, a 50.1 miles (80.7 km) trail that takes 4 hours 23 minutes to complete. This route features segments of the Véloroute 81 and includes tunnels.
  • Another top favourite among local gravel bikers is Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Saint-Martin-de-Caralp, a moderate 20.8 miles (33.5 km) path. This route offers scenic views from the Vernajoul Viaduct Greenway.
  • Local gravel bikers also love the The tunnels of Véloroute 81 – Old Rimont Station loop from Castelnau-Durban, a 20.2 miles (32.5 km) trail leading through varied terrain, often completed in about 1 hour 46 minutes.
  • Gravel biking around Alzen is defined by greenways, river valleys, and viaducts, with routes offering options for different ability levels.
  • The routes in Alzen are highly rated by the komoot community with an average score of 4.8 stars from over 23 reviews. More than 115 gravel bikers have used komoot to explore Alzen's varied terrain.

Last updated: July 6, 2026

4.9

(11)

67

riders

#1.

The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban

80.7km

04:23

660m

660m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Popular around Alzen

Traffic-free bike rides around Alzen

Traffic-free bike rides around Alzen

Tips from the Community

Siro Arias Valdés - Testadicorsa
June 29, 2026, Col de Péguère

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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cgdscc
June 14, 2026, Col de Péguère

The real Wall :)

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quiet route, rolling towards Foix, steeper towards Saint Martin de Caralp

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Bettina
June 23, 2025, Foix

A very beautiful little town with a certain charm. If you're in the area, you should definitely stop by.

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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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Frequently Asked Questions

How many no-traffic gravel bike trails are available around Alzen?

There are 7 dedicated no-traffic gravel bike trails around Alzen listed in this guide, offering a variety of experiences for different skill levels. You'll find routes ranging from moderate to difficult, ensuring a suitable adventure for many riders.

Are there any circular gravel bike routes around Alzen that avoid car traffic?

Yes, several routes are designed as loops to bring you back to your starting point without encountering significant car traffic. For example, the The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban offers a substantial circular ride, and the Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Saint-Martin-de-Caralp is another excellent option for a car-free loop.

What kind of scenery can I expect on the no-traffic gravel trails in the Alzen region?

The Alzen region offers diverse and picturesque scenery. You can expect to ride through lush valleys, along rivers, and past historical structures. Many trails feature impressive viaducts and tunnels, providing unique visual experiences. The landscape is characterized by its natural beauty, offering a refreshing escape from urban environments.

Are there any specific highlights or points of interest along these traffic-free routes?

Absolutely! The routes are rich with points of interest. You can explore highlights like The tunnels of Véloroute 81 and the Vernajoul Viaduct Greenway, which are integral parts of some trails. Other notable features include the Col de la Crouzette (1245 m) and the scenic Foix–Saint-Girons Greenway, offering stunning views and historical context.

What do other gravel bikers say about the no-traffic trails around Alzen?

The komoot community highly rates the no-traffic gravel biking experience around Alzen, with an average score of 4.8 out of 5 stars from 23 ratings. Riders often praise the tranquility of the routes, the well-maintained greenways, and the opportunity to immerse themselves in nature away from vehicle noise.

Are there any routes suitable for beginners looking for traffic-free gravel biking?

While many routes in this guide are rated moderate to difficult, the greenways themselves often provide a smoother, more accessible surface. For instance, sections of the Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Saint-Martin-de-Caralp are moderate and offer a good starting point for those new to gravel biking, focusing on scenic views rather than extreme technical challenges.

Can I find routes that offer panoramic views in the Alzen area?

Yes, several trails provide excellent opportunities for panoramic views. The Vernajoul Viaduct Greenway, for example, is specifically highlighted for its scenic vistas. Additionally, routes that ascend to higher elevations, such as those near the Col de la Crouzette (1245 m), will reward you with expansive outlooks over the surrounding landscape.

Are there any natural monuments or unique natural features to see on these trails?

The region boasts several natural highlights. You can explore the broader Couserans region, known for its natural beauty. Specific natural features include the Cap du Carmil and the serene Lac de Mondély, offering peaceful spots to pause and enjoy the environment.

What is the best season for gravel biking on these traffic-free trails?

The Alzen region is generally enjoyable for gravel biking from spring through autumn, when the weather is mild and the natural scenery is at its most vibrant. While some trails might be accessible in winter, checking local conditions for snow or ice is always recommended, especially on higher elevation sections or shaded greenways.

Are there any longer, more challenging no-traffic gravel routes for experienced riders?

Experienced riders seeking a challenge will find several difficult routes. The The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban, at over 80 km with significant elevation gain, is a demanding option. Another challenging ride is the Col de la Crouzette (1245 m) – Old metal bridge loop from Cadarcet, which features substantial climbing and a longer duration.

Can I access these gravel trails using public transport?

While the guide focuses on the trails themselves, many of the starting points for these routes are located near towns or villages that may have public transport connections. It's advisable to check local bus or train schedules for towns like Castelnau-Durban, Saint-Martin-de-Caralp, or Ganac to plan your access to the trailheads.

Are there places to explore or towns to visit near the gravel bike routes?

Yes, the routes often pass near or through charming settlements. The town of Foix is a significant highlight, offering historical attractions and amenities. Exploring these towns can add a cultural dimension to your gravel biking adventure.

Most popular routes around Alzen

Traffic-free bike rides around Alzen

Most popular attractions around Alzen

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