4.1
(14)
162
riders
20
rides
Gravel biking around Forêt de Grimbosq offers routes through dense woodlands and river valleys, characterized by varied terrain. The region features significant elevation changes, with routes traversing hills and incorporating structures like viaducts. This area provides a mix of natural forest environments and historical points of interest, suitable for gravel cycling.
Last updated: July 2, 2026
5.0
(1)
31
riders
64.0km
04:41
1,090m
1,090m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
36
riders
110km
06:22
590m
590m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(2)
9
riders
46.1km
03:36
760m
760m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
3.9
(8)
34
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
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a great cycle path through the railway tunnel - the tunnel is beautifully lit.
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A rest area at the train station. There's more than just tables and benches here, plus a nice place to linger.
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Pretty country road and very quiet.
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The place is nice with beautiful paths but watch out for punctures. Twice on the paths I got a flat tire because of large thorns.
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Very pleasant street where it is good to walk, especially when the PM has blocked the street, generally on weekends and during school holidays.
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Gravel biking in Forêt de Grimbosq is primarily suited for experienced riders. The majority of routes, 22 out of 30, are rated as difficult, with the remaining 8 being moderate. There are no easy routes available in this area, indicating significant elevation changes and challenging terrain.
Forêt de Grimbosq does not currently offer any easy-rated gravel bike routes. All available trails are either moderate or difficult, featuring considerable elevation gains and varied terrain. This makes the area less suitable for beginners or families with young children seeking gentle rides.
For those seeking longer rides, the region offers several extensive options. One notable route is the Orne Bay – Sainte-Anne Viaduct loop from Thury-Harcourt, which spans over 93 kilometers. Another challenging option is The Rochers des Parcs – Clécy Viaduct loop from Grimbosq, covering approximately 63.6 kilometers.
Many gravel bike routes in the Forêt de Grimbosq region start from various villages and towns surrounding the forest. Common starting points mentioned in popular routes include Grimbosq itself, Mutrécy, Les Godets, Amayé-sur-Orne, and Thury-Harcourt. You can usually find local parking facilities in these areas, often near the start of the trails.
The terrain in Forêt de Grimbosq is characterized by dense woodlands, river valleys, and significant elevation changes. You'll encounter a mix of forest paths, gravel tracks, and potentially some paved sections connecting different areas. The routes often traverse hills and incorporate structures like viaducts, offering a varied and engaging riding experience.
Yes, many of the gravel bike trails in Forêt de Grimbosq are designed as loops, allowing you to start and end at the same point. Examples include Sainte-Anne Viaduct – Living water loop from Mutrécy and the Former mine at May-sur-Orne – Le bois de Bully loop from Les Godets. These circular routes are convenient for day trips.
The routes often pass by notable landmarks that reflect the region's natural beauty and industrial history. You might encounter impressive structures like the Clécy Viaduct and the Sainte-Anne Viaduct, as well as natural formations such as the Rochers des Parcs. Some trails also lead past historical sites, like the former mine at May-sur-Orne.
While specific data isn't available, generally, spring and autumn offer the most pleasant conditions for gravel biking in this region, with milder temperatures and beautiful foliage. Summer can also be good, but be prepared for warmer weather. Winter riding is possible but may involve colder temperatures and potentially muddy or icy conditions on some trails.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 20 reviews. Reviewers often praise the varied terrain, the challenge of the climbs, and the scenic beauty of the dense woodlands and river valleys. The presence of historical industrial sites and viaducts also adds a unique character to the rides.
There are over 30 gravel bike routes available for exploration in the Forêt de Grimbosq region. These routes vary in length and difficulty, predominantly catering to moderate to difficult skill levels.
Yes, many routes in Forêt de Grimbosq offer a blend of natural landscapes and historical points. For instance, the Sainte-Anne Viaduct – Former mine at May-sur-Orne loop from Amayé-sur-Orne takes you past both a significant viaduct and a former industrial mine site, showcasing the diverse character of the region.


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