4.3
(64)
411
riders
43
rides
Mountain biking around Runan offers a diverse landscape characterized by river valleys, agricultural plains, and areas with notable elevation changes. The region features a network of trails that traverse varied terrain, including routes near viaducts and aqueducts, suggesting a mix of historical and natural surroundings. With a range of distances and elevation gains, the area provides options for different mountain biking experiences.
Last updated: June 21, 2026
3.0
(3)
23
riders
53.2km
04:17
710m
710m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.3
(3)
18
riders
41.7km
03:01
400m
390m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4.7
(6)
15
riders
23.1km
01:35
180m
180m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
15
riders
30.6km
02:10
360m
360m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.8
(4)
13
riders
42.4km
03:25
560m
560m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Impressive, not just for railway fans.
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Path to the weir is a bit hidden. But worth it for a short detour.
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Great Wehrschloss with a great park
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Great weir castle with a very beautiful park.
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Château de la Roche-Jagu was built at the beginning of the 15th century in the Trieux valley in Brittany. Construction presumably took place between approximately 1405 and 1418. It was created for Catherine de Troguindy, a member of the Breton nobility. The location was chosen for its strategic position on a rocky outcrop. From there, the Trieux river and the traffic routes in the valley could be controlled. The complex served both as a residence and as a fortified manor house. During the Breton War of Succession, the region was repeatedly contested. The complex also suffered damage. After the conflicts, the building was repaired and partially rebuilt. The architecture remained strongly influenced by military functions. In the late Middle Ages, the castle developed into a representative noble residence. It thus reflects the transition from pure defensive architecture to the residential and power display of the nobility.
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The Château de la Roche-Jagu is a beautiful fortress built in the 15th century that proudly overlooks the Trieux estuary, giving it a strategic surveillance asset at the time due to its unobstructed view. Today, its patrol path offers all visitors an exceptional panorama of the entire valley. Nature lovers will stroll in the castle park, labeled "Eco Garden" and "Remarkable Garden", whose exceptional landscaping encourages introspection and contemplation.
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The Etang de Prat is a natural oasis, charming with its peaceful waters, its green banks and the variety of its fauna.
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Built in 1910. Has seen locomotives pass (And maybe still, see vapordutrieux.com) or the famous micheline… Small path to get there on foot or by bike. Be careful to look both ways before crossing. There are always trains 🚂🚄
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There are over 40 mountain bike trails around Runan, offering a wide range of options for different skill levels and preferences. This includes 13 easy routes, 27 moderate routes, and 1 difficult route.
Yes, Runan offers 13 easy mountain bike routes suitable for beginners or those looking for a more relaxed ride. These trails typically feature less challenging terrain and elevation changes.
Many routes in Runan are scenic, often traversing river valleys and agricultural plains. For a ride that combines natural beauty with historical structures, consider the Passerelle Saint François – Guindy Aqueduct loop from Hengoat, which passes by an aqueduct.
Yes, many mountain bike trails around Runan are designed as loops, allowing you to start and finish at the same point. Examples include the Étang de Prat loop from Prat and the Flax scutching tool loop from La Roche-Derrien.
Trail durations vary significantly based on distance and difficulty. For example, the Pontrieux Viaduct – Un loop from Pontrieux - Halte is a longer, moderate route that typically takes around 4 hours 33 minutes, while shorter routes can be completed in under 2 hours.
The terrain around Runan is diverse, characterized by river valleys, agricultural plains, and areas with notable elevation changes. You'll encounter a mix of historical and natural surroundings, including routes near viaducts and aqueducts.
The mountain bike trails in Runan are highly rated by the komoot community, with an average score of 4.4 stars from over 50 reviews. Riders often praise the varied terrain, the scenic river valleys, and the presence of historical structures like viaducts.
Yes, the region offers several interesting landmarks. You might encounter the Tréguier Bridge, the historic Château de la Roche-Jagu, or the charming town of Pontrieux. Some routes also offer views like the Route de la Vieille Côte overlooking the Jaudy estuary.
Runan offers a range of difficulty levels. You'll find 13 easy routes, 27 moderate routes, and 1 difficult route, catering to various skill sets from beginners to experienced riders looking for a challenge.
Yes, for experienced riders seeking a challenge, there is at least one difficult mountain bike route available in Runan. These trails typically feature significant elevation gains and more technical sections.
While mountain biking can be enjoyed year-round, spring and autumn generally offer the most pleasant conditions with milder temperatures and vibrant scenery. Summer can also be good, but be prepared for warmer weather. Winter riding is possible, but conditions may vary.
Yes, the landscape around Runan is characterized by river valleys, so many mountain bike trails follow or cross rivers. The Un – Pontrieux Viaduct loop from Pontrieux - Halte, for instance, leads through river valleys.


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