4.8
(45)
429
riders
65
rides
Gravel biking around Réserve naturelle nationale de la baie de Saint-Brieuc offers diverse landscapes shaped by the bay's significant tidal range. The terrain includes coastal paths, greenways, and countryside trails, providing a mix of environments for riders. Extensive mudflats, sand dunes, and salt marshes characterize the shoreline, while inland routes traverse fields, woods, and river valleys. This region provides varied surfaces suitable for gravel cycling.
Last updated: August 22, 2026
5.0
(2)
8
riders
26.6km
01:44
270m
270m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
21
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(2)
31
riders
91.1km
05:49
840m
840m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
15
riders
46.8km
02:52
500m
500m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
5.0
(2)
12
riders
50.4km
03:12
410m
410m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
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Popular around Réserve naturelle nationale de la baie de Saint-Brieuc
Built in the commune of Hillion in the Côtes-d'Armor department, the Ponts-Neufs viaduct was built in the early 1910s by Louis Auguste Harel de La Noë. It was built for the operation of the Yffiniac-Matignon railway line and extends over 237 meters in length with a height of twenty-seven meters. The Ponts-Neufs viaduct was completely restored in 2014 and is no longer used by trains. It can be crossed on foot or by mountain bike; the site now serves as an extension of the coastal cycle path.
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We accidentally drove under the viaduct. Nice impression
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This viaduct has spanned the Parfond de Gouet valley since 1904. Like many other engineering structures in this region, it was built by Harel de la Noe, the chief engineer of bridges and roads, for the departmental railway network. The Saint-Brieuc to Paimpol line operated until 1956. Today, bicycles have replaced the little train!
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A path rather than a road that comes across a somewhat unexpected passage with a beautiful view from above.
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small passage with a nice view, and on a car-free road
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great for a short break
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This is where the boats gather - when we were here, there were no boat owners around - high noon!
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You'll find over 50 dedicated no-traffic gravel bike trails in the Réserve naturelle nationale de la baie de Saint-Brieuc. These routes offer a fantastic way to explore the region's diverse landscapes, from coastal paths to inland greenways, all while enjoying a peaceful ride away from cars.
The terrain is quite varied, reflecting the bay's dynamic environment. You can expect a mix of coastal paths, dedicated greenways, and countryside trails. Routes often traverse mudflats, sand dunes, and salt marshes near the coast, and lead through fields and woods further inland. Some segments, especially near the coast, can be rugged, while others, like the Vélomaritime sections, offer smoother, more bucolic paths.
Yes, the region offers several routes suitable for families looking for a safe, car-free cycling experience. Look for trails that follow the greenways or designated cycling paths, which tend to have gentler gradients and smoother surfaces. These routes allow you to enjoy the natural beauty of the bay together.
While many natural areas in France have specific rules regarding dogs, especially in nature reserves, it's generally possible to bring well-behaved dogs on a leash on many public paths and greenways. However, within the Réserve naturelle nationale de la baie de Saint-Brieuc, which is a significant bird habitat, it's crucial to keep dogs strictly on a leash and adhere to any posted signage to protect the wildlife. Always check local regulations for specific trail segments.
The spring and autumn months are generally ideal for gravel biking in the Baie de Saint-Brieuc. During these seasons, the weather is typically mild, and the natural landscapes are vibrant. Spring brings blooming flora and active birdlife, while autumn offers beautiful colors. Summer can also be pleasant, but trails might be busier, especially coastal sections. Winters are milder than in many other regions, but can be wet.
The trails offer numerous scenic highlights. You can enjoy panoramic views of the bay from elevated points like the Pointe du Roselier, or explore picturesque spots such as Pointe de Pordic and Bec de Vir point. The reserve is also a haven for migratory birds, offering excellent birdwatching opportunities, particularly at the Pointe des Guettes. Don't miss the La Grève des Courses or the Pointe du Grouin Viewpoint for stunning vistas.
Yes, many of the gravel bike routes in the Réserve naturelle nationale de la baie de Saint-Brieuc are designed as circular loops, allowing you to start and finish at the same point. For example, the Ponts-Neufs Viaduct – VTT Côtes d'Armor Hillion loop from Hillion offers a moderate 35 km ride, while the Greves de langueux – Grèves Coastal Cycle Path loop from Pont des Courses is a 25 km option. These loops are perfect for exploring without needing to retrace your steps.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the stunning coastal scenery, the tranquility of the car-free paths, and the rich biodiversity, especially the birdwatching opportunities. The variety of terrain, from challenging coastal sections to peaceful greenways, is also frequently highlighted as a major draw.
Yes, the Vélomaritime route crosses the Baie de Saint-Brieuc and includes sections that are well-suited for gravel biking. These segments often feature "bucolic and intimate trails" that allow you to experience the rugged beauty of Brittany's coast and inland areas away from heavy traffic. They integrate well with the local greenway network, providing a continuous and scenic cycling experience.
Parking is available at various points around the reserve, often near popular trailheads or coastal access points. For example, areas around Hillion, Yffiniac, and the Port du Légué offer parking facilities. Public transport options, such as regional buses, connect major towns in the Saint-Brieuc Bay area, and some may accommodate bikes, though it's always best to check schedules and bike policies in advance. The proximity of trails to towns like Saint-Brieuc makes access relatively convenient.
While the no-traffic nature of these trails means you won't find services directly on every path, many routes pass through or near charming villages and towns where you can find cafes, bakeries, and small shops. It's always a good idea to carry sufficient water and snacks, especially on longer rides, but you'll have opportunities to refuel in places like Hillion or near the Port du Légué.


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