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Foix

Alzen

The best gravel rides around Alzen

4.3

(16)

118

riders

15

rides

Gravel biking around Alzen features a landscape shaped by historical transport infrastructure, including converted railway lines and greenways. The region offers varied terrain, from sections passing through old tunnels and over viaducts to paths alongside rivers and through rural areas. Elevation changes are present, providing both challenging climbs and more moderate sections suitable for different fitness levels.

Best gravel bike trails around Alzen

  • The most popular gravel bike trail is The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from…

Last updated: October 8, 2026

4.8

(8)

80

riders

#1.

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

84.8km

04:37

700m

700m

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

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Hard

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

Hard
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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

Cycling around Alzen

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Tips from the Community

Barbara & Andreas 🕊️
September 25, 2026, Piste cyclable du tracé ferroviaire près de Foix

Beginning or end of the railway cycle path „Voie Verte“ St. Girons - Foix or vice versa. A short section also serves to continue to (or from) Palmier. The Foix - Pamier route is neither signposted nor developed. But it can be easily ridden on small side roads.

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At the school, there is a tap on an outbuilding. When heading towards Foix, this is the last tap directly on the cycle path that we noticed. It makes sense to refill your supplies here.

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One of many old train stations on the route, all of which are inhabited as private homes. How we wished that one of them housed a café. Nostalgic memories of the Alpe-Adria journey are awakened!

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http://www.abbayedecombelongue.fr/2_jardins.html

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Trailhoulet du Vernajoul 10.5 kms

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A magnificent spot with the road winding under the rock, running alongside a partially underground stream. It's both breathtaking and peaceful. Plus, there's a starting point for a short walk; I did the beginning and it was lovely: I'd love to come back and do a longer section!

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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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Old little station that reminds us of another time!

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Frequently Asked Questions

How many gravel bike trails are available around Alzen?

There are over 10 gravel bike trails documented on komoot around Alzen, offering a variety of experiences for different skill levels. The region is known for its routes along historical transport infrastructure like converted railway lines and greenways.

Are there any easy or beginner-friendly gravel bike routes in Alzen?

While many routes in Alzen are moderate to difficult, there are options suitable for those looking for a less strenuous ride. For example, the Foix – Vernajoul Viaduct Greenway loop from Saint-Martin-de-Caralp is a moderate 20.7-mile (33.3 km) path that incorporates greenway sections, making it a good choice for beginners or families.

What kind of terrain can I expect on gravel bike trails in Alzen?

Gravel biking around Alzen is characterized by varied terrain, including sections through old tunnels, over viaducts, and along greenways. You'll also find paths alongside rivers and through rural areas, with elevation changes providing both challenging climbs and more moderate sections.

Are there any long-distance gravel bike routes for advanced riders?

Yes, advanced riders can tackle longer and more challenging routes. The The tunnels of Véloroute 81 – Foix–Saint-Girons Greenway loop from Castelnau-Durban is a difficult 50.1-mile (80.7 km) trail that explores extensive sections of the Véloroute 81, including its tunnels and greenway paths, offering a significant challenge.

What do other gravel bikers enjoy most about the trails in Alzen?

The komoot community highly rates the gravel biking experience in Alzen, with an average score of 4.8 stars. Reviewers often praise the unique historical infrastructure, such as the old railway lines, tunnels, and viaducts, which provide a distinctive backdrop for rides. The varied terrain and well-maintained greenways are also frequently highlighted.

Are there any circular gravel bike routes available?

Many of the gravel routes in Alzen are designed as loops, allowing you to start and end at the same point. Examples include the Foix – Vernajoul Viaduct Greenway loop from Saint-Martin-de-Caralp and The tunnels of Véloroute 81 – Old Rimont Station loop from Castelnau-Durban, which offer convenient circular options.

What is the best time of year for gravel biking in Alzen?

The region's climate generally allows for gravel biking through much of the year. Spring and autumn often provide pleasant temperatures and beautiful scenery. Summer can be warm, making early morning or late afternoon rides ideal. Winter riding is possible, but check local conditions for ice or snow, especially in shaded tunnel sections.

Are there any routes that offer notable viewpoints or scenic spots?

Many routes in Alzen, particularly those that incorporate viaducts or elevated sections of old railway lines, offer scenic views of the surrounding rural landscape and river valleys. The greenway sections often provide open vistas, and the historical infrastructure itself is a point of interest.

Are there any gravel routes that pass by cafes or places to stop for refreshments?

While specific cafes directly on every trail are not guaranteed, routes that pass through or near towns and villages like Castelnau-Durban or Saint-Martin-de-Caralp will likely have opportunities for refreshments. Planning your route with komoot allows you to identify potential stops along the way.

What are the options for parking when accessing gravel bike trails in Alzen?

For routes starting from towns like Castelnau-Durban or Saint-Martin-de-Caralp, you can typically find public parking facilities. It's advisable to check local parking regulations and availability in these starting points before your ride.

Can I reach the gravel bike trails in Alzen using public transport?

Access to trailheads via public transport can vary. While some larger towns in the wider region may have train or bus connections, direct public transport links to specific, more remote trail starting points might be limited. It's recommended to research local bus services or train connections to the nearest towns and plan accordingly.

Are there any hidden gem gravel trails in Alzen that are less frequented?

While the main routes like those along the Véloroute 81 are popular, the extensive network of greenways and rural paths means there are always quieter sections to explore. Look for routes that venture further into the countryside away from the main historical infrastructure for a more secluded experience, such as the Old metal bridge – Vernajoul Viaduct Greenway loop from Sentenac-de-Sérou.

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