4.5
(95)
462
riders
33
rides
Gravel biking around Lassy offers a network of routes primarily featuring paths along canals and rivers. The terrain is characterized by waterways such as the Ille-et-Rance Canal and the Vilaine River, suggesting mostly flat or gently rolling landscapes suitable for gravel exploration. These routes often pass by historical features like mills, providing a blend of natural scenery and cultural points of interest. The region provides varied surfaces ideal for gravel bikes, from riverside trails to rural paths.
Last updated: July 16, 2026
4.8
(12)
65
riders
82.5km
04:08
350m
350m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.6
(10)
68
riders
84.2km
04:34
540m
540m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(4)
37
riders
148km
08:17
690m
690m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
4.8
(4)
27
riders
92.0km
05:08
380m
380m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
4.3
(7)
35
riders
52.8km
02:40
270m
270m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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This former watermill, documented as early as 1089, was initially used as a fulling mill before being converted into a flour mill in the 19th century. Its operation ceased on December 31, 1974. Since then, the building has stood as a significant heritage landmark, marking the industrial and riverine history of the Vilaine Valley.
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Hello everyone, The bridge has been dismantled for two years, undergoing repairs in the navigation workshops. I hope to see it again one day.
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Very pretty for this turquoise blue water. But deadly for swimming.
1
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Inflate the tires properly because flint
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Great area to explore for those who love climbing!
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Well done to Alain who is renovating this mill
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There are 19 gravel bike routes around Lassy documented on komoot, offering a variety of experiences for different skill levels.
Yes, Lassy offers 4 easy gravel routes perfect for beginners or a relaxed family outing. A good option to start with is the L'Ille – Ille-et-Rance Canal loop from Chavagne, which offers a moderate distance with gentle elevation changes.
For experienced gravel bikers seeking a challenge, Lassy features 7 difficult routes. Consider the Guipry-Messac Mill – Vilaine Loop loop from Guichen - Bourg-des-Comptes, which covers over 124 km with significant elevation gain, providing a demanding and rewarding ride.
Yes, for those looking for longer rides, the Guipry-Messac Mill – Vilaine Loop loop from Guichen - Bourg-des-Comptes is a substantial option at over 124 km. Another excellent choice is the Guipry-Messac Mill – Vilaine River loop from Guichen - Bourg-des-Comptes, spanning over 91 km.
Many of the gravel routes around Lassy are designed as loops, allowing you to start and end at the same point. Examples include the L'Ille – Ille-et-Rance Canal loop from Chavagne and the Pont-Réan – Boël Mill loop from Chavagne.
The routes often pass by scenic waterways and historical sites. You can explore highlights like the historic Boël Mill, the picturesque Pont-Réan bridge, and various lakes and ponds such as Bodrais Pond and Cicé Ponds. For more details, check out the komoot guides for Lakes around Lassy and Attractions around Lassy.
The Lassy area is highly rated by the komoot community, with an average score of 4.36 stars. Riders frequently praise the diverse routes that combine scenic canal paths with more challenging forest tracks, and the opportunity to discover charming local landmarks and tranquil natural spots.
While gravel biking can be enjoyed year-round, spring and autumn generally offer the most pleasant conditions in the Lassy region, with mild temperatures and beautiful scenery. Summer can be warm, and winter might bring cooler, wetter weather, but routes are often still accessible.
Many routes in the Lassy area traverse rural landscapes, forests, and riverbanks, providing excellent opportunities for wildlife observation. The trails along the Ille-et-Rance Canal and the Vilaine River, such as the Guipry-Messac Mill – Vilaine River loop, are particularly good for spotting local birds and other small animals in their natural habitats.
Yes, many of the routes pass through or near small towns and villages where you can find local cafes, bakeries, or pubs to refuel and relax. It's always a good idea to check opening hours in advance, especially in smaller communities.
While popular routes can see more activity, many of Lassy's gravel trails, especially those venturing deeper into the countryside or along less-trafficked sections of canals, offer a peaceful and less crowded experience. Exploring routes during off-peak hours or weekdays can also enhance tranquility.


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