4.0
(72)
292
hikers
8
hikes
Family friendly hiking trails around Etang De Marcille are set within a diverse natural environment, characterized by a large body of water fed by the Ardenne and Seiche rivers. The landscape features humid meadows, willow and alder hedges, and reed beds, supporting a rich ecosystem. An ancient Hercynian rocky outcrop and the ruins of a medieval castle add historical context to the terrain. The area offers varied routes suitable for different skill levels, with gentle elevation changes.
Last updated: July 1, 2026
4.5
(13)
55
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(2)
23
hikers
13.8km
03:35
80m
80m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3
hikers
10.2km
02:39
60m
60m
Moderate hike. Good fitness required. 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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A small town of character, La Guerche-de-bretagne is full of charm, its cobbled streets inviting you to stroll among the half-timbered houses. Source: https://www.petitescitesdecaractere.com/cites/la-guerche-de-bretagne
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The construction of this church began in the 10th century. In the 11th century a large fire destroyed a large part of the church, but later the church was rebuilt. It was rebuilt in the 16th and 17th centuries, possibly thanks to the generosity of the Dukes of Brissac. It has been a historic monument since 1974. There are statues of gargoyles on the facade which are quite remarkable. For mass it is the 1st Saturday of the month at 6:00 p.m.
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The medieval village of La Guerche-de-Bretagne is famous for its lively Tuesday morning market and the remarkable architecture of its half-timbered houses. The weekly market remains one of the largest in France and is one of the three must-see markets in Ille-et-Vilaine. The tradition of markets in La Guerche dates back to 1121!
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It is an artistic and cultural place. Built on the site of the feudal manor of Plessis-Guériff, the current castle dates from 1722. Partly destroyed during the Hundred Years' War, it has retained a 15th century wing which is still visible today. You can explore the sculpture park and take part in artistic workshops. It is also a hotel. For all information and reservations click here: https://www.chateaudesperes.fr/en
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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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There are 7 family-friendly hiking trails around Etang de Marcillé-Robert, ranging from easy strolls to more moderate paths, ensuring options for various family skill levels.
The area is beautiful year-round, but spring and autumn offer pleasant temperatures and vibrant scenery. Winter is particularly good for birdwatching, as the lake is on an important migratory corridor. Summer provides opportunities for longer days, but remember to stay hydrated.
Yes, there are 2 easy routes specifically designed for less strenuous walks, perfect for families with young children or toddlers. These trails often feature relatively flat terrain and shorter distances, making them accessible for everyone.
Absolutely! Many trails incorporate the ruins of the medieval castle, which once overlooked the valley. The lake itself is a significant natural feature, and you can also discover unique art installations like "Migrations..." by Myriam du Manoir, featuring large bird sculptures. An observation hut is available for birdwatching.
Yes, Etang de Marcillé-Robert is a haven for wildlife, especially birds. You can often spot wild ducks, waders, gulls, and cormorants. The diverse ecosystem also supports various amphibians and reptiles. An observation hut provides a great opportunity for quiet viewing without disturbance.
While specific rules can vary, generally, dogs are welcome on many trails around Etang de Marcillé-Robert, especially if kept on a leash. Given the sensitive natural environment and abundant wildlife, it's crucial to keep your dog under control to protect the local fauna and flora.
Yes, many of the trails are designed as circular routes, offering a convenient way to explore the area without retracing your steps. For example, the La Roche-aux-Fées Dolmen – Rigaudière loop from Maison de la Roche aux Fées is a moderate circular option, and the Hiking loop from Piré-Chancé also provides a great circular experience.
Etang de Marcillé-Robert is located about 35 km southeast of Rennes. While direct public transport options might be limited, it's advisable to check local bus schedules from Rennes to nearby towns like Marcillé-Robert. Driving is often the most convenient way to access the trailheads.
Parking is generally available at key access points around the lake and near the starting points of popular trails. Specific parking areas are often indicated on local maps or at the beginning of trailheads, especially near the castle ruins or the Maison de la Roche aux Fées.
The terrain around Etang de Marcillé-Robert is generally varied but manageable for families. You'll find paths along the lake, through humid meadows, and sometimes gentle ascents to viewpoints like the ancient Hercynian rocky outcrop where the castle ruins stand. Paths are typically well-maintained, but some areas might be muddy after rain.
The area is highly rated by the komoot community, with an average score of 3.99 stars. Reviewers often praise the tranquil lake scenery, the rich biodiversity, and the blend of natural beauty with historical landmarks like the castle ruins. The well-maintained trails and opportunities for birdwatching are also frequently highlighted.
The village of Marcillé-Robert, located close to the étang, offers some local amenities where you might find places to eat or grab refreshments. It's always a good idea to check opening hours in advance, especially if you're hiking during off-peak seasons or weekdays.


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