4.8
(5)
82
riders
7
rides
Gravel biking around Callac offers routes through a landscape characterized by rolling hills, forested areas, and river valleys. The region features a network of paths often following historical waterways and rural tracks. Elevation changes are present, with some routes including significant climbs. These routes provide access to the natural and historical features of central Brittany.
Last updated: July 5, 2026
5.0
(1)
36
riders
159km
08:30
1,090m
1,090m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
16
riders
176km
11:00
1,540m
1,530m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(1)
13
riders
136km
08:15
980m
980m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
6
riders
124km
07:30
1,020m
1,020m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
164km
10:14
1,560m
1,560m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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We are well in the shade, a well-maintained path
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Here the origin of the path can be seen: it was an old railway. The old station is well maintained.
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A pretty iron bridge, built for farmers at the time. Here the path along the water was in a bad state in April 2026 (a warning was installed on one side of the section, but a detour through the forest is possible).
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The reconstruction is great! But we left some parts in ruins, which preserves the character of an old building.
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A great detour to Saint Aignan, the Les Pêcheries de Guerlédan restaurant is very welcoming, with bike parking, a generous meal and welcome. Crossing the village, you can reach the canal a little further on via the lock.
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There are around 5 gravel bike routes detailed for the Callac area on komoot. These routes offer a variety of experiences through the region's diverse landscapes, from moderate loops to more challenging long-distance rides.
While many routes around Callac are rated as difficult, the Gurunhuel loop from Gurunhuel is a moderate 13.5 km trail, making it a good option for those seeking a less strenuous ride or a family outing. It leads through pleasant rural landscapes.
Gravel biking around Callac is characterized by rolling hills, dense woodlands, and river valleys, often following historical waterways and rural tracks. You should expect varied surfaces and some routes include significant elevation changes.
Yes, several routes are circular. For example, the Gurunhuel loop from Gurunhuel is a moderate circular route. For more challenging options, the Bon-Repos Abbey – Lock No. 138 of Bon Repos loop from Carnoët-Locarn and the Quistinic lock – Kerdiston lake loop from Callac are extensive circular trails.
Experienced gravel bikers will find several difficult routes. The Bon-Repos Abbey – Lock No. 138 of Bon Repos loop from Carnoët-Locarn is a demanding 132.3 km trail exploring the Blavet valley. Another challenging option is the Old Station, Locmaria-Berrien – Poullaouen loop from Carnoët, which covers 38.8 km with significant elevation.
Many routes offer scenic views of the region's natural beauty, including river valleys and woodlands. You can also encounter historical features like locks along waterways. Nearby attractions worth exploring include the impressive Valley of the Saints and the historic Saint-Gildas Chapel.
The region's climate generally allows for gravel biking from spring through autumn. Spring offers lush greenery, while autumn provides beautiful foliage. Summer can be warm but is also suitable. Always check local weather conditions before heading out.
While all routes offer unique experiences, the Gurunhuel loop from Gurunhuel, though shorter, provides a peaceful journey through rural landscapes that might feel like a local secret compared to the longer, more popular valley routes.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the diverse terrain, the exploration of historical waterways, and the opportunity to experience the natural and historical features of central Brittany.
Yes, the Quistinic lock – Kerdiston lake loop from Callac is a difficult 99.1 km route that specifically features Kerdiston lake, offering scenic views along its shores.
Many routes follow historical waterways, such as the Blavet valley, which features numerous locks. The Bon-Repos Abbey – Lock No. 138 of Bon Repos loop from Carnoët-Locarn specifically highlights Bon-Repos Abbey and Lock No. 138, offering a glimpse into the region's past.


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