4.3
(3)
27
riders
2
rides
Gravel biking around Coësmes offers access to diverse terrain within the Ille-et-Vilaine department of Brittany. The region is characterized by its position within the Armorican Massif, featuring a mix of low mountains, hills, and plateaus. Routes often traverse rural countryside, forests, and traditional "bocage" (hedged farmland), with many utilizing converted railway lines and dedicated greenways. This landscape provides varied surfaces suitable for gravel bikes, from stabilized sand to rolling tracks.
Last updated: July 16, 2026
4.5
(2)
13
riders
33.2km
02:06
160m
160m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
71.5km
04:14
510m
510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
21.9km
01:20
210m
210m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
45.1km
02:43
360m
360m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
2
riders
37.9km
02:13
230m
230m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Coësmes
With nearly 20 meters long, 6 meters wide, and 4 meters high, the Roche-aux-Fées remains the largest dolmen in France and one of the best-preserved in Europe. It is composed of a schist-covered passage formed by four chambers whose meaning has not yet been revealed. Although the construction of this monument dates back to the Neolithic period, around 2000 BC, specialists remain perplexed about its construction method. The site is impressive. And when you know that some stones weighing over 40 tons come from several kilometers around, you wonder how the inhabitants of the time managed to move them there. Such a site could only inspire stories, legends, and beliefs. One of them tells that the fairy Viviane, aided by fellow fairies, would have built this imposing monument... in one night. Another concerns lovers: to know if their union will last, couples must walk around the Roche-aux-fées, each in a different direction, and count the stones. If they find the same number of stones, their future will be bright! Through a mysterious alignment during the winter solstice on December 21st or 22nd, the sun rises facing the entrance of the dolmen. At that moment, the light rays magically illuminate the stone located at the back of the covered passage. Access is free and open. The small surrounding roads are charming and quiet.
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Short video of the site: https://www.youtube.com/watch?v=bqEBsKL7P7s
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Small sunken path ideal for gravel or mountain biking
0
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Great tour to do with the family with lots of undergrowth. Pond skirted several times. Very pleasant.
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Historic site of Châteaubriant-Ploërmel. Educational panel explaining its past and current history.
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The line from Châteaubriant to Ploërmel is an old railway line, this route was closed and classified as "Voie Verte" it linked the station of Châteaubriant in Loire-Atlantique to that of Ploërmel in Morbihan. To this day there is still the building of the chief station as well as the station
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The rock of the fairies, French: Roche-aux-fées, located in the middle of green nature, is simply enchanting. If you are interested in megaliths, you should take a break here. The undisputed largest dolmen in France is also closely linked to the legend of the fairy Liliane. The construction of this monument undoubtedly dates back to the Neolithic period, i.e. around 2,000 years before our time. So far, researchers have not found an explanation for exactly how it was built. With its 19.50 meters length, six meters width and four meters height, the structure is more than impressive. And when you consider that some of the stones, which weigh more than 40 tons, come from several kilometers away, you can rightly ask yourself how the people of that time managed to transport them here. This mystery gave rise to a legend: it is said that the impressive structure was built by Viviane and her fairy friends.
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Truly magical and impressive. It's hard to believe what people can achieve with simple means...
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The komoot community has curated several no-traffic gravel bike trails around Coësmes. This guide features 5 routes, offering a variety of distances and experiences designed to keep you away from vehicular traffic.
The area is highly rated by the komoot community, with an average score of 4.25 stars. Reviewers often praise the peaceful, rural setting and the diverse terrain that makes for an engaging gravel biking experience, especially the sections of converted railway lines.
You can expect a varied landscape, typical of the Armorican Massif, with a mix of low mountains, hills, and plateaus. Many traffic-free routes utilize 'Voies Vertes' (greenways) built on old railway lines, offering surfaces from stabilized sand and bitumen to grassy paths and small country roads. You'll ride through forests, grasslands, and traditional 'bocage' (hedged farmland).
Yes, there are several circular options designed for gravel bikes with minimal traffic. For example, the Railway station – Voie Verte Gravel Path loop from Teillay offers a moderate 33 km ride, while the La Roche-aux-Fées Dolmen loop from Essé is a shorter 20 km option that includes a notable historical site.
Yes, many of the 'Voies Vertes' (greenways) are ideal for families and beginners due to their flat, well-maintained surfaces and absence of traffic. These paths often follow old railway lines, providing a safe and enjoyable environment for all skill levels. The Voie Verte Gravel Path – Railway station loop from Ercé-en-Lamée is a great example of a moderate route that offers a smooth experience.
Brittany generally offers pleasant cycling conditions from spring through autumn. Spring and early summer provide lush green landscapes and comfortable temperatures, while autumn brings beautiful foliage. Even in winter, many of the traffic-free greenways remain accessible, offering quiet rides through the serene countryside.
The region is rich in history and natural beauty. You can encounter impressive sites like the La Roche-aux-Fées Dolmen, one of France's largest megalithic monuments. Many routes also pass through charming rural villages, alongside tranquil rivers, lakes, and lush forests. The Greenway from Châteaubriant to Rougé, for instance, offers scenic views of the Chère valley.
Coësmes is conveniently located approximately 3 kilometers from 'La Régalante,' a significant 275-kilometer cycling route. Over half of this route uses dedicated 'Voies Vertes,' providing extensive traffic-free sections perfect for longer gravel rides. While not entirely traffic-free, it offers substantial car-free segments for extended exploration.
Parking is generally available in the towns and villages that serve as starting points for these routes, such as Teillay, Essé, Janzé, or Ercé-en-Lamée. Look for public parking areas near the access points of the 'Voies Vertes' or local amenities. Specific parking details can often be found on individual route descriptions on komoot.
Yes, many of the traffic-free routes pass through or near small towns and villages where you can find local cafes, bakeries, or small shops. It's always a good idea to check the route details or local information beforehand, especially for longer rides, to plan your refreshment stops.
While Coësmes itself is a rural area, regional bus services connect some of the larger towns in Ille-et-Vilaine. Accessing specific trailheads directly by public transport might require some planning. It's advisable to check local transport schedules for services to towns like Janzé or Châteaubriant, which are closer to some of the main greenways.
Generally, dogs are permitted on a leash on most public greenways and rural paths in Ille-et-Vilaine, provided they are well-behaved and their owners clean up after them. However, it's always best to check specific local regulations or signage for any particular route you plan to ride, especially if it passes through nature reserves or private land.


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