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Sem

The best MTB trails around Sem

4.7

(22)

172

riders

17

rides

Mountain bike trails around Sem offer a diverse landscape for riders, characterized by extensive trail networks within forests and natural preserves. The region features varied terrain, including singletrack paths with roots, switchbacks, and off-cambered sections. Riders can also encounter man-made elements like small drops and rollers, providing technical challenges. These trails often include moderate climbing and descending sections with short, steep pitches.

Best mountain bike trails around Sem

  • The most popular mountain bike trail is Pic de Risoul – Siguer…

Last updated: July 4, 2026

4.5

(2)

24

riders

#1.

Pic de Risoul – Siguer loop from Val-de-Sos

37.9km

03:38

1,170m

1,170m

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

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Hard

5.0

(2)

15

riders

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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5.0

(1)

11

riders

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

Hard

4.4

(5)

19

riders

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

Hard

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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Popular around Sem

GR 10 – Explore the Ariège Pyrenees crossing the Pyrenees

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GR 10 – Explore the Ariège Pyrenees crossing the Pyrenees

Hiking Collection by

Luc Gesell

Tips from the Community

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

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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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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Awesome, endless S2 trail with a few S3 cruxes. Awesome!

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Raphael
October 1, 2025, Pla de Montcamp

Beautiful view of the surrounding peaks.

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Marco
June 2, 2025, Lapégu Village

Hike to do with a very good full suspension mountain bike or 🥾🎒

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superb view of the ridges and beautiful descent to Sem

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Sébastien
January 8, 2024, Port de Lers

Just drive and enjoy

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Vince
November 12, 2023, Port de Lers

The Port of Lers is a crossing point which offers a beautiful panorama where you may be lucky enough to see Mertens black horses. It is also a place which has seen the Tour de France pass many times.

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Frequently Asked Questions

What kind of terrain can I expect on mountain bike trails in Sem?

Mountain bike trails in Sem offer a diverse landscape, primarily within forests and natural preserves. You'll encounter varied terrain, including singletrack paths with roots, switchbacks, and off-cambered sections. Some routes also feature man-made elements like small drops and rollers, providing technical challenges. Expect moderate climbing and descending sections, often with short, steep pitches.

How many mountain bike trails are available in Sem?

There are 18 mountain bike trails around Sem, offering a range of experiences for different skill levels.

Are there any easy mountain bike trails in Sem for beginners?

While Sem is known for its more challenging routes, there are 5 moderate mountain bike trails available. These offer a good starting point for riders looking to build their skills before tackling the more difficult terrain.

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

The mountain bike trails in Sem are highly rated by the komoot community, with an average score of 4.7 stars from over 19 reviews. Riders often praise the extensive trail networks, varied terrain, and immersive forests and natural preserves.

Are there any circular mountain bike routes in Sem?

Yes, many routes in Sem are circular. For example, the Pic de Risoul – Siguer loop from Val-de-Sos is a popular difficult circular route covering 23.5 miles. Another option is the Siguer – Col de Grail Refuge loop from Siguer, a challenging 25.8-mile loop.

What are some of the longer mountain bike routes in Sem?

For longer rides, consider the Siguer – Col de Grail Refuge loop from Siguer, which is 25.8 miles (41.6 km) long. Another extensive option is the Col de Grail Refuge – Viewpoint loop from Val-de-Sos, spanning 25.5 miles (41 km).

Are there any specific mountain bike trails suitable for advanced riders in Sem?

Sem offers 13 difficult mountain bike trails for advanced riders. A challenging option is the Col de Grail Refuge – Pic de Risoul loop from Val-de-Sos, which features significant elevation gain over 17.7 miles (28.5 km).

What kind of natural features or landmarks can I see along the mountain bike trails in Sem?

While riding in Sem, you can encounter various natural features and landmarks. These include mountain peaks like Saleix Pass and Three Lords' Peak. You might also pass by huts and refuges such as Étang Fourcat and Refuge de l'Étang Fourcat, or the Orri of La Coume Izourt.

Are there any routes with downhill sections in Sem?

Yes, some routes incorporate downhill sections. The Lapégu Village – Lapège to Junac Downhill MTB loop from Val-de-Sos is a moderate 12.9-mile trail specifically designed with downhill mountain biking in mind, leading through forested areas.

What is the typical duration for mountain bike rides in Sem?

Ride durations vary depending on the trail's length and difficulty. For instance, the moderate Lapégu Village – Lapège to Junac Downhill MTB loop from Val-de-Sos typically takes about 2 hours 4 minutes, while more difficult and longer routes like the Pic de Risoul – Siguer loop from Val-de-Sos can take around 3 hours 37 minutes.

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