4.7
(19)
175
riders
18
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.
Last updated: May 7, 2026
4.5
(2)
24
riders
37.9km
03:38
1,170m
1,170m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
5.0
(1)
23
riders
45.4km
06:20
2,280m
2,280m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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4.0
(1)
14
riders
28.5km
03:05
1,040m
1,040m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
4.7
(3)
8
riders
20.8km
02:04
590m
590m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
8
riders
41.0km
04:54
1,720m
1,720m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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flow trail type descent, everything goes on the bike without danger
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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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Not very technical, a few pins and no exposure
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This small town in the Ariège Pyrenees regional natural park is at the crossroads of many hiking routes. The town and its hamlets are dynamic and offer many activities in summer, which makes them very pleasant to cross. If you want to spend the night there, you will find many accommodation options.
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Here you benefit from a pretty window to admire the peaks of the massif which rises on the other side of the valley. You will be able to see the peak of Boucarle or the rock of Querquéou.
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By climbing to the peak of Risoul you can enjoy a magnificent view of the village of Vicdessos and its valley. Be attentive, the chamois like to hang around and observe hikers.
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This refuge is located in the privileged setting of ancient royal forests. It represents a comforting stopover for long-distance hikers. The refuge offers around fifteen beds and is equipped with five bathrooms, three toilets and a living room. It’s a very pleasant step.
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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.
There are 18 mountain bike trails around Sem, offering a range of experiences for different skill levels.
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.
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.
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.
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).
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).
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.
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.
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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