Château de la Groulais – Paudais lock loop from Drefféac

Bike touring routes & trails

Château de la Groulais – Paudais lock loop from Drefféac

Hard

4.5

(6)

riders

Château de la Groulais – Paudais lock loop from Drefféac

06:48

112km

420m

Cycling

Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route. The starting point of the route is accessible with public transport.

Last updated: September 24, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional de Brière

Waypoints

Start point

Train Station

Get Directions

18.3 km

Barel Lock

Highlight • Structure

14th lock from Nantes. This one is separated from the spillway by an island. There's also a beautiful stone bridge.

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27.7 km

Blain 44

Highlight • Structure

It is a fairly active port on the Nantes-Brest Canal, with a capacity for up to 30 pleasure craft and 3 barges. Bars, restaurants, and public restrooms are available.

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28.6 km

Château de la Groulais

Highlight • Castle

The Château de la Groulais was the largest fortress in the region at the time and was the home of several personalities, including Olivier V de Clisson and Marie Bonaparte, etc.

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30.4 km

It is nice to see that it is possible to carry out such renovations and continue to preserve the landscape and a culture.
It also shows that there is money here and that people have the opportunity to earn money.

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43.9 km

Beautiful scenery along the Nantes-Brest canal

Highlight • Other

Very pleasant passage along the canal from Nantes to Best. Track well laid out and practicable by all.

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44.7 km

Melneuf lock

Highlight • Other

Here, the lock and the spillway are separated by an island, which adds to the charm of the place. Picnic table.

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48.2 km

Parc de Carheil

Forest

53.4 km

L'Isac - super wide and aquatic plants

Highlight • Other

The bank formation looks special.
Aquatic plants grow like carpets on both sides.

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65.3 km

Green Slate Gravel Path

Highlight • Trail

I was always fascinated by the green colour of the slate, which was chosen here as fine gravel for the road surfaces

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112 km

End point

Train Station

Way Types & Surfaces

Way Types

49.7 km

45.0 km

8.37 km

7.40 km

720 m

702 m

< 100 m

Surfaces

49.6 km

34.8 km

25.5 km

1.03 km

760 m

113 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (60 m)

Lowest point (undefined)

Weather

Saturday 10 October

17°C

7°C

53 %

Additional weather tips

Max wind speed: 11.0 km/h

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Comments

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Château de la Groulais – Paudais lock loop from Drefféac

Barel Lock

Blain 44

Château de la Groulais

Paudais lock

Beautiful scenery along the Nantes-Brest canal

Melneuf lock

L'Isac - super wide and aquatic plants

Green Slate Gravel Path

Nearby routes

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