4.3
(14)
163
riders
18
rides
Gravel biking around Guillac offers access to a network of trails through diverse landscapes in Brittany, France. The region is characterized by the hard-packed gravel towpaths of the Nantes-Brest Canal, which also forms part of the EuroVelo 1 route. Inland, riders can explore sections of the GR 37 hiking trail and the varied terrains of the Forêt de Paimpont, which includes forest trails and country roads. The surrounding verdant Breton countryside provides additional paths, featuring a mix of unpaved and…
Last updated: July 3, 2026
4.0
(3)
32
riders
59.8km
04:00
450m
450m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
18
riders
149km
08:50
1,370m
1,370m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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25
riders
101km
06:37
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.2
(5)
22
riders
14.7km
00:58
60m
60m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.0
(2)
19
riders
50.3km
03:16
450m
450m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Nice little spot to sit and have a snack peacefully by the water. It's right on the voie verte
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1
Great for a crepe break. Even better for a beer break!!
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Very beautiful castle, the crows that prowl around it make it look... strange.
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Sculpture in the village of Néant-sur-Yvel https://morbihan.com/a-voir-a-faire/suivez-le-guide/les-nouveaux-chevaliers-de-la-table-ronde-neant-sur-yvel-fr-4411852/
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Very beautiful castle on the canalized Oust
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superb work which is completed over time. a beautiful stage in the hike.
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Josselin and its castle look very impressive from afar. A beautiful sight!
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Guillac offers a network of over 20 gravel bike trails, catering to various skill levels. These routes explore the diverse landscapes of Brittany, from canal towpaths to forest trails.
You'll encounter a mix of surfaces. The Nantes-Brest Canal towpath, which runs through Guillac, is primarily hard-packed, fine gravel or crushed stone, offering a relatively flat ride. Inland, routes can include unpaved rural tracks, forest trails, and small country roads, especially as you approach areas like the Forêt de Paimpont.
Yes, there are easy options suitable for families. The canal towpaths are generally flat and well-suited for a relaxed ride. For a scenic and shorter loop, consider the Lac au Duc – Dukes' Lake loop from Taupont, which is rated as easy and covers about 14.7 km.
Absolutely. For more challenging rides, head towards the legendary Forêt de Paimpont (Brocéliande Forest), located about 25 km from Guillac. This area offers technical gravel routes and varied forest trails. Routes like the Josselin Castle – View of Lac au Duc loop from Taupont, at over 100 km with significant elevation, are rated as difficult and provide a substantial challenge.
The verdant Breton countryside is particularly pleasant during spring and autumn, with milder temperatures and beautiful scenery. Summer also offers good conditions, especially along the shaded canal paths. While winter riding is possible, be prepared for potentially wetter and cooler weather on unpaved sections.
Many of the gravel bike routes around Guillac are designed as loops, allowing you to start and finish at the same point. Examples include the Lac au Duc – Dukes' Lake loop from Taupont and the Josselin Castle – Lock-keeper's house loop from Josselin.
The region is rich in attractions. You can cycle along the historic Nantes-Brest Canal, passing numerous locks. The impressive medieval Château de Josselin is just 8 km from Guillac and can be reached via a beautiful route along the Oust Valley. The legendary Forêt de Paimpont offers mythical sites and ancient trees. You can also explore the peaceful Parc des Coteaux in Guillac itself.
The Halte Nautique of Guillac, located directly on the Nantes-Brest Canal, serves as a convenient starting point and offers parking. For routes around Josselin, parking is available near the Château de Josselin. If you're exploring Lac au Duc, look for parking options around Taupont.
While Guillac itself is a small commune, public transport options might be limited for direct access with bikes. It's advisable to check local bus services for routes connecting to larger towns like Ploërmel or Josselin, which may offer better connections and potentially allow bikes, though this often requires prior arrangement.
Guillac and nearby towns like Josselin and Ploërmel offer various options for refreshments and accommodation. You'll find local cafes, pubs, and restaurants in the village centers. The Halte Nautique of Guillac on the canal also provides a pleasant resting area with picnic tables.
The gravel biking routes in Guillac are highly rated by the komoot community, with an average score of 4.4 stars from over 20 reviews. Riders often praise the tranquil canal paths, the diverse terrain, and the scenic beauty of the Breton countryside.
Generally, dogs are welcome on many outdoor trails in France, especially on canal towpaths and forest routes, provided they are kept under control, often on a leash. However, specific rules can vary, particularly in protected natural areas or private lands. Always ensure your dog doesn't disturb wildlife or other trail users.
Absolutely, the Nantes-Brest Canal is a central feature of gravel biking in Guillac. Its towpath is ideal for gravel bikes and forms part of the EuroVelo 1 (La Vélodyssée). You can easily spend a day cycling alongside the waterway, enjoying tranquil views and passing through charming lock-keepers' houses.
Yes, several routes provide excellent views of Lac au Duc. The Lac au Duc – Dukes' Lake loop from Taupont is a dedicated route that circles the lake, offering continuous scenic vistas. Longer routes like the View of Lac au Duc – Lake Trémelin loop from Ploërmel also incorporate sections with lake views.


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