4.5
(40)
395
riders
69
rides
Gravel biking around Hillion offers a diverse landscape that blends coastal features with varied inland terrains. The region is characterized by its extensive cycling infrastructure, providing access to both scenic coastal paths and protected natural areas like the Réserve Naturelle Nationale de la Baie de Saint-Brieuc. Gravel bike trails in Hillion navigate through a mix of surfaces, from mostly paved sections to flowing gravel tracks with some technical elements, including the deeply entrenched Gouessant valley. This variety ensures an engaging…
Last updated: October 6, 2026
4.6
(12)
75
riders
39.5km
02:30
360m
360m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
5.0
(1)
34
riders
54.3km
03:30
630m
630m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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.
4.5
(4)
28
riders
41.3km
02:29
390m
390m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
19
riders
111km
07:23
1,040m
1,040m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
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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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Our starting point. The house was unfortunately closed.
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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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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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Hillion's gravel bike trails offer a diverse mix of surfaces. You'll find everything from mostly paved sections to flowing gravel tracks, with some routes incorporating more technical elements. The region blends coastal paths with varied inland terrains, providing a constantly changing and engaging backdrop for your ride.
There are over 70 gravel bike routes around Hillion listed on komoot. These routes cater to a range of abilities, from moderate to difficult challenges, ensuring options for various experience levels.
Yes, Hillion offers routes suitable for families. While many routes are moderate to difficult, there are at least two easy routes available. For example, the Douvenant Viaduct – Ponts-Neufs Viaduct loop from Yffiniac, though listed as difficult, is part of a network that includes easier sections, and the region generally offers diverse options for various ability levels.
For those seeking a significant challenge, the Douvenant Viaduct – Ponts-Neufs Viaduct loop from Yffiniac is a difficult 92.6 km trail that takes over 7 hours to complete. Another demanding option is the Parfond du Gouët Viaduct – Douvenant Viaduct loop from Yffiniac, which covers 72.7 km with varied terrain.
Hillion's trails often pass through or near the Réserve Naturelle Nationale de la Baie de Saint-Brieuc, offering opportunities to observe local flora and fauna. You can also encounter impressive structures like the Ponts-Neufs Viaduct. Coastal paths, such as those near La Grève des Courses, Saint-Brieuc Bay Nature Reserve, provide stunning sea views.
The komoot community highly rates the gravel biking experience in Hillion, with an average score of 4.6 stars from over 40 reviews. More than 500 gravel bikers have explored the varied terrain, appreciating the blend of coastal scenery and diverse inland landscapes.
Yes, many of the gravel bike routes in Hillion are designed as loops. For instance, the Douvenant Viaduct – The Pont des Courses loop from Yffiniac is a 50.6 km circular trail, and the Pont-Neufs Viaduct – Viaduc des Ponts-Neufs loop from Port du Légué offers another substantial loop of 57.1 km.
Brittany generally experiences mild coastal weather, making gravel biking enjoyable for much of the year. While specific seasonal recommendations aren't provided, the diverse terrain means routes can be explored in various conditions. It's always advisable to check local weather forecasts before heading out, especially for winter conditions.
Yes, along some routes, you might find points of interest like the Saint-Brieuc Bay Visitor Centre. The region also features charming coastal settlements such as Dahouët Harbour and Légué Harbor, Saint-Brieuc, which can be explored as part of your ride.
Ride durations vary significantly based on the route's length and difficulty. Shorter, easier routes might take just over an hour, while more challenging and longer trails, like the Ponts-Neufs Viaduct – Ponts-Neufs Viaduct loop from Yffiniac (56.7 km), can take around 4 hours 15 minutes. The longest routes can extend to over 7 hours.


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