4.1
(29)
210
riders
27
rides
Mountain bike trails Esplas-De-Sérou are set within the Ariège Pyrenees Regional Natural Park, characterized by preserved landscapes, mountains, and extensive forests. The southern commune features dense coniferous and hardwood trees, with the Massif d'Arize providing panoramic views. The region's Pyrenean foothills offer diverse terrain, including narrow paths, dirt tracks, and rocky sections, suitable for various mountain biking experiences.
Last updated: June 20, 2026
19
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
11
riders
41.1km
03:53
1,200m
1,200m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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4.7
(3)
9
riders
28.8km
02:38
990m
990m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4
riders
24.9km
02:04
490m
490m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
7
riders
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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A heavenly place to enjoy the Pyrenees in their full glory. Ideal for a family picnic in spring or summer. Also, as there is a bar - restaurant, it is ideal if you want to have a drink on the terrace.
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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.
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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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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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Don't trust the no trespassing sign. Private property! Danger of death prohibited! We almost missed it because of those two signs! You have to be careful, yes, like everywhere! But to put danger of death 🙄! Plus, there's a lifeline where there would be danger! But honestly, we didn't see any danger! Done with an 8-year-old, no problem!
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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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There are 28 mountain bike trails around Esplas-De-Sérou, offering a variety of experiences for different skill levels. You'll find 4 easy routes, 14 moderate routes, and 10 difficult routes.
The terrain around Esplas-De-Sérou, nestled in the Pyrenean foothills, is diverse. You can expect narrow paths, dirt and alpine tracks, and rocky sections, especially on more challenging routes. The region also features extensive forests and varied landscapes within the Ariège Pyrenees Regional Natural Park.
Yes, there are 4 easy mountain bike routes suitable for families or those looking for a gentler ride. Additionally, the 42 km "Voie Verte" between Foix and Saint-Girons, which passes near La Bastide-de-Sérou, offers largely flat paths with gentle slopes and magnificent views, ideal for a relaxed family outing.
The region offers numerous outstanding viewpoints. The Massif d'Arize provides panoramic vistas across the Pyrenees. You can also encounter diverse wetlands, high-altitude pastures, and dense forests. Routes like the Lers Pond – Lers Pond loop from Biert offer views of the Lers Pond and surrounding mountain landscapes.
Yes, for longer rides, consider the Old metal bridge – The tunnels of Véloroute 81 loop from La Bastide-de-Sérou, which is 55 km long. Another option is the Lers Pond – Lers Pond loop from Biert, covering 41 km with significant climbs.
The mountain bike trails around Esplas-De-Sérou are highly rated by the komoot community, with an average score of 4.1 stars from over 30 reviews. Riders often praise the diverse terrain, from gentle greenways to demanding alpine tracks, and the spectacular scenery of the Pyrenean foothills.
Many routes in the area are designed as loops. For example, the Old metal bridge – The tunnels of Véloroute 81 loop from La Bastide-de-Sérou and the Col de la Crouzette (1245 m) – Col de Péguère loop from Biert are popular circular options.
Yes, you can explore several interesting points. The Grotte du Mas-d'Azil, a unique cave system, is a notable natural monument. You might also pass by the scenic Lac de Mondély. For challenging climbs, consider routes that pass through mountain passes like Col de la Crouzette (1245 m) or Péguère Pass.
The Pyrenean foothills offer excellent mountain biking conditions through much of the year. Spring and autumn generally provide pleasant temperatures and vibrant scenery. Summer can be warm, but higher-altitude routes offer cooler air. Winter conditions can bring snow to higher elevations, making some trails inaccessible, so checking local conditions is advisable.
Absolutely. The Pyrenean foothills are known for their technical challenges. Routes like the Lers Pond – Lers Pond loop from Biert and the Col de la Crouzette (1245 m) – Col de Péguère loop from Biert are rated as difficult, featuring significant elevation gains and demanding terrain, ideal for experienced cyclists seeking a challenge.
Yes, the region benefits from the 42 km "Voie Verte" between Foix and Saint-Girons, which is built along former railway lines. This path offers a unique riding experience with gentle slopes and tunnels, as featured in routes like the Old metal bridge – The tunnels of Véloroute 81 loop from La Bastide-de-Sérou.
Mountain biking in Esplas-De-Sérou caters to a wide range of abilities. While there are 4 easy routes and 14 moderate options, the region is particularly known for its 10 difficult trails. These challenging routes often involve significant climbs and technical sections through the Pyrenean foothills.


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