4.8
(27)
342
riders
63
rides
Gravel biking around Réserve naturelle nationale de la baie de Saint-Brieuc offers diverse landscapes, including coastal paths, greenways, and country roads. The terrain features expansive sandy mudflats, salt marshes, and dunes, providing varied surfaces for gravel bikes. Routes often combine paved sections with natural stabilized ground and unpaved surfaces, traversing a coastline with panoramic views and sections with pronounced elevation changes. Beyond the immediate coast, paths extend into forested areas and valleys.
Last updated: July 2, 2026
5.0
(1)
18
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
32
riders
92.2km
05:57
850m
850m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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13
riders
46.6km
02:54
510m
510m
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
03:13
410m
410m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
8
riders
28.4km
01:43
280m
280m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Réserve naturelle nationale de la baie de Saint-Brieuc
The Customs Officers' Path – GR 34 between Paimpol and Erquy
Cycling around Réserve naturelle nationale de la baie de Saint-Brieuc
Hiking around Réserve naturelle nationale de la baie de Saint-Brieuc
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Running Trails around Réserve naturelle nationale de la baie de Saint-Brieuc
Road Cycling Routes around Réserve naturelle nationale de la baie de Saint-Brieuc
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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The Greenway - and the Percée Viaduct - a fascinating story, which can be read on the information panels and is very interesting to me. Here's a translation of Vaduz: Like elegant young ladies striding over the valleys of the Lilliputian kingdom, at the beginning of the 20th century, nine viaducts, including the Parfond de Gouët Viaduct, with their beautiful brick arches, stretched along the very first railway line of the local network, St. Brieuc - Plouha. These engineering structures, built by a native of the region, Louis Harel de La Noë (1852-1931), a bridge and road engineer, allowed the small train of the Côtes-du-Nord to follow the winding and steep coastline without much effort. Lightness and elegance are the words that come to mind when describing the architecture of this 1903 building, characterized by numerous columns and arched vaults and its masonry in warm brick colors. The techniques used demonstrate boldness, ingenuity, and originality: reinforced concrete anchors (rebars) were installed to increase the compressive strength of the pillars and prevent cracks.
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Great stop off for lunch… however, food outlets close between 13:00 - 14:00 or 15:00.
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There are over 75 gravel bike routes in the Réserve naturelle nationale de la baie de Saint-Brieuc, offering a wide range of experiences. These include 2 easy, 29 moderate, and 44 difficult trails, catering to various skill levels.
The region offers diverse terrain, from coastal paths and greenways to country roads and forested areas. You'll encounter a mix of paved sections, natural stabilized ground, and unpaved surfaces. Expect varied topography with both flat sections and pronounced elevation changes, especially along the stunning coastline.
Yes, there are routes suitable for beginners and families. While many routes are moderate, you can find easier sections along the greenways and coastal paths. For example, parts of the Greves de langueux – Grèves Coastal Cycle Path loop from Pont des Courses offer a moderate experience with beautiful bay views, which can be adapted for less experienced riders.
Absolutely. The Réserve naturelle nationale de la baie de Saint-Brieuc features 44 difficult routes for experienced gravel bikers. These often include more significant elevation changes and longer distances. A challenging option is the Douvenant Viaduct – Ponts-Neufs Viaduct loop from Yffiniac, which covers over 92 km and includes substantial climbs.
Yes, many of the gravel bike routes in the Réserve naturelle nationale de la baie de Saint-Brieuc are designed as loops, allowing you to start and end at the same point. Examples include the Ponts-Neufs Viaduct – VTT Côtes d'Armor Hillion loop from Hillion and the Pont-Neufs Viaduct – Viaduc des Ponts-Neufs loop from Port du Légué, which offer varied distances and difficulties.
The trails offer numerous scenic viewpoints and attractions. You can enjoy panoramic views of the bay, observe diverse bird species, and explore natural formations. Highlights include La Grève des Courses, Pointe du Grouin Viewpoint, and the historic viaducts designed by Harel de la Noé. The Maison de la Baie in Hillion also offers insights into the local ecosystem.
Saint-Brieuc is a central hub with public transport connections, including a train station. Some routes, like the Saint-Brieuc Station – Saint-Brieuc - Street art loop from Langueux, start near urban centers, making them accessible by public transport. It's advisable to check local bus and train services for specific routes and bike carriage policies.
Parking is generally available in the towns and villages that serve as starting points for many routes, such as Hillion, Langueux, and near Port du Légué. Look for designated parking areas in these locations to begin your ride. Many routes are loops, so you can return to your starting point.
The spring and autumn months are ideal for gravel biking, offering pleasant temperatures and beautiful scenery, especially during bird migrations. Winter can also be rewarding for birdwatching, though it may be colder. Summer is popular, but routes can be busier. Always check local weather conditions before heading out.
Yes, the cycling routes often connect various towns and fishing ports, allowing riders to experience local Breton culture and cuisine. You'll find opportunities to stop for refreshments and local delicacies, especially in charming seaside resorts like Binic-Étables-sur-Mer, or in the villages along the way.
The unique blend of coastal paths, greenways, and country roads, combined with the diverse natural environments like sandy mudflats, salt marshes, and dunes, makes gravel biking here exceptional. You'll experience stunning panoramic views, rich biodiversity, and a chance to explore historic structures like viaducts, all within a protected natural reserve.
The gravel biking routes in the Réserve naturelle nationale de la baie de Saint-Brieuc are highly rated by the komoot community, with an average score of 4.6 stars from over 40 reviews. Over 500 gravel bikers have explored the varied terrain, often praising the scenic coastal views, the mix of challenging and accessible paths, and the rich natural environment.
Yes, the region is known for its historic viaducts, which are often incorporated into cycling paths. The Ponts-Neufs Viaduct – VTT Côtes d'Armor Hillion loop from Hillion and the Pont-Neufs Viaduct – Viaduc des Ponts-Neufs loop from Port du Légué are excellent examples of routes that allow you to cycle past these impressive architectural landmarks.


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