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Saint-Girons

Biert

The best MTB trails around Biert

4.8

(28)

217

riders

30

rides

Mountain biking around Biert, nestled in the French Pyrénées, offers diverse terrain characterized by significant elevation gains and varied topography. The region features a network of trails that traverse mountainous environments, including passes and natural ponds. Riders can expect routes with considerable ascents, providing a true Pyrenean mountain biking experience. The area's natural features contribute to a range of technical difficulties across its trails.

Best mountain bike trails around Biert

  • The most popular mountain bike trail is Lers Pond –…

Last updated: June 20, 2026

11

riders

#1.

Lers Pond – Lers Pond loop from Biert

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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Hard

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

Hard

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

Hard

5.0

(1)

9

riders

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

Hard
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Tips from the Community

Siro Arias Valdés - Testadicorsa
June 29, 2026, Étang de Lers

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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It is a MUST of the Pyrenees, without a doubt, that should be included in any route that crosses the Pyrenees from side to side. Any of its slopes 2 is spectacular and tough. The views from its summit are wonderful, feeling the wild side of the Pyrenees. Of course, once at the summit of this pass... you have to descend to the Étang de Lers and enjoy a quiet rest on the shores of the lake. It is a pass that has been part of the Tour de France route on several occasions, although always far from the finish line. The first professional rider to crest it in the lead was the unforgettable Marco Pantani in 1995.

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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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cgdscc
June 14, 2026, Port de Lers

I liked the climb from the north side (from Massat), very scenic and alpine landscapes towards the end at the étang de Lers

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Bettina
June 23, 2025, Seix

Beautiful, small town in the central Pyrenees, has that certain something and is definitely worth a visit

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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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Frequently Asked Questions

How many mountain bike trails are available around Biert?

There are over 30 mountain bike trails around Biert, offering a diverse range of options for riders. These include 4 easy routes, 14 moderate routes, and 13 difficult routes, ensuring there's something for every skill level.

What kind of terrain can I expect on mountain bike trails near Biert?

Mountain biking around Biert is characterized by significant elevation gains and varied Pyrenean topography. You'll encounter challenging climbs, mountain passes like Col de Péguère and Catchaudégué Pass, and scenic areas around natural features such as Lers Pond. Some routes may even require pushing your bike on particularly steep or technical sections.

Are there any family-friendly mountain bike trails in Biert?

Yes, Biert offers 4 easy mountain bike routes that are generally more suitable for families or beginners. While specific family-friendly routes are not detailed, these easier options provide a good starting point for less experienced riders to enjoy the region's beauty.

What are some of the most challenging mountain bike trails around Biert?

For experienced riders seeking a challenge, Biert offers 13 difficult mountain bike routes. Notable options include the Lers Pass – Agnès Pass loop from Oust, which spans over 71 km with nearly 1800 meters of ascent, and the Catchaudégué Pass – Seix loop from Soueix-Rogalle, covering 38.7 km with over 1200 meters of climbing.

Are there any circular mountain bike routes available?

Yes, many of the mountain bike trails around Biert are designed as loops. For instance, the popular Lers Pond – Lers Pond loop from Biert is a difficult 41.1 km circular route, and the Col de la Crouzette (1245 m) – Col de Péguère loop from Biert also offers a challenging circular ride.

What natural features or landmarks can I see while mountain biking near Biert?

The region around Biert is rich in natural beauty. You can ride past prominent mountain passes such as Péguère Pass, Col de la Crouzette (1245 m), and Agnès Pass. The picturesque Lers Pond is also a significant natural landmark featured on several routes, offering scenic views.

What do other mountain bikers say about the trails in Biert?

The mountain bike trails in Biert are highly regarded by the komoot community, holding an average rating of 4.9 stars from over 20 reviews. Riders often praise the diverse terrain, the challenging ascents, and the stunning Pyrenean landscapes that make for a rewarding experience.

Are there any routes that pass through the Col de Péguère?

Yes, the Col de la Crouzette (1245 m) – Col de Péguère loop from Biert is a challenging route that includes the notable Col de Péguère, known for its demanding climbs and scenic views within the Arize massif.

What is the longest mountain bike trail in the area?

The longest mountain bike trail listed is the Lers Pass – Agnès Pass loop from Oust, which stretches for approximately 71.8 km (44.6 miles) and involves a significant elevation gain of nearly 1800 meters. This route is classified as difficult and typically takes over 5 hours to complete.

Can I find mountain bike trails that start from Oust or Soueix-Rogalle?

Yes, several trails begin from nearby towns. For example, the Seix – Seix loop from Oust is a popular difficult route, and the Catchaudégué Pass – Seix loop from Soueix-Rogalle also offers a challenging ride from a different starting point.

What is the best time of year for mountain biking in Biert?

While specific seasonal recommendations are not provided, the Pyrenean environment suggests that late spring, summer, and early autumn generally offer the most favorable conditions for mountain biking, with less snow and more stable weather. Always check local weather forecasts before heading out.

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