4.0
(72)
292
hikers
27
hikes
Hiking around Etang De Marcille offers routes through diverse landscapes centered on a 105-hectare freshwater lake. The terrain includes wetlands, forests, and humid meadows, with a notable rocky spur to the west. The area is characterized by its varied ecosystems, providing a mix of flat paths around the lake and routes with gentle elevation changes through surrounding woodlands.
Last updated: July 8, 2026
4.2
(13)
18
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
8
hikers
3km
00:47
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.5
(13)
55
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3.0
(2)
21
hikers
11.6km
03:03
100m
100m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4
hikers
6.52km
01:43
60m
60m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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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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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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There are over 15 hiking routes available around Etang De Marcille. The majority are suitable for a range of abilities, with 5 easy trails and 11 moderate trails. There are no difficult routes in this area, making it accessible for most hikers.
Yes, many of the trails around Etang De Marcille are circular, offering convenient loops back to your starting point. A popular option is the Étang de Marcillé loop from Marcillé-Robert, which circles the lake and provides pleasant views of its diverse surroundings.
Absolutely. The area offers several easy trails perfect for families. The paths around the lake are generally well-maintained and relatively flat, providing a safe and enjoyable experience for children. The Étang de Marcillé loop from Marcillé-Robert is an excellent choice for families looking for a pleasant and accessible walk.
Yes, dogs are generally welcome on the hiking trails around Etang De Marcille. However, it's always recommended to keep them on a leash, especially given the rich biodiversity and presence of various bird species and other wildlife in the area. Please ensure you clean up after your pet to help preserve the natural environment.
While hiking, you can explore diverse landscapes including wetlands, forests, and humid meadows. A significant historical landmark is the ruins of a medieval castle situated on a rocky outcrop overlooking the valley to the west. The area also features a notable geological rocky spur, formed by the Hercynian uplift, which dominates the western side of the lake.
Etang De Marcille is a valuable ecological site, especially for birdwatching. You can expect to see a wide variety of bird species, particularly during winter, including wild ducks like mallards, common teals, and tufted ducks, as well as waders, gulls, and cormorants. The area is also home to Natterer's bat, various amphibians like the common frog and marbled newt, and reptiles such as grass snakes and green lizards. An observation hut is available for undisturbed wildlife viewing.
Parking is typically available at or near the starting points of many trails around Etang De Marcille, particularly in villages like Marcillé-Robert. Specific parking information can often be found on local signage or detailed route descriptions for individual trails.
Etang De Marcille is located about 35 km southeast of Rennes. While local bus services might connect nearby towns, direct public transport access to specific trailheads around the lake can be limited. It's advisable to check local transport schedules in advance or consider driving to the area for more flexibility.
The area offers pleasant hiking experiences throughout much of the year. Spring and autumn provide comfortable temperatures and beautiful scenery, with vibrant foliage or blooming flora. Winter is particularly notable for birdwatching, as the lake becomes a significant migratory corridor. Summer can be enjoyable, but it's always wise to check local weather forecasts and stay hydrated.
The terrain around Etang De Marcille is quite varied. You'll find mostly flat paths directly around the lake, traversing wetlands and humid meadows. As you venture into the surrounding forests and towards the rocky spur, you can expect gentle elevation changes. Routes like the La Roche-aux-Fées Dolmen – Rigaudière loop from Maison de la Roche aux Fées offer more varied terrain and slightly greater ascents.
The trails around Etang De Marcille are highly rated by the komoot community, with an average score of 4.0 stars from over 50 reviews. Hikers often praise the diverse landscapes, the tranquility of the lake, and the opportunity for wildlife observation. The well-maintained paths and the mix of easy and moderate options also contribute to a positive hiking experience.
While there are no 'difficult' graded routes, experienced hikers can find longer, moderate trails that offer more of a challenge. For instance, the La Roche-aux-Fées Dolmen – Rigaudière loop from Maison de la Roche aux Fées is a 15.2 km (9.5 miles) route with over 140 meters of elevation gain, providing a more extensive exploration of the region's varied terrain.


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