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Bike touring routes & trails

France

Pays de la Loire

Châteaubriant-Ancenis

Blain

Château de la Groulais – Paudais lock loop from Blain

Routes

Bike touring routes & trails

France

Pays de la Loire

Châteaubriant-Ancenis

Blain

Château de la Groulais – Paudais lock loop from Blain

Hard

4.5

(27)

195

riders

Château de la Groulais – Paudais lock loop from Blain

06:49

109km

220m

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: May 14, 2026

Waypoints

Start point

Bus stop

Get Directions

370 m

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.

Translated by Google •

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1.24 km

Port of Blain

Highlight • Rest Area

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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2.65 km

Paudais lock

Highlight • Other

The twelfth lock you will see when leaving Nantes

Translated by Google •

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16.2 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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25.0 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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48.1 km

Canal de Nantes à Brest

Highlight • Other

The Nantes-Brest Canal, at Redon, offers a peaceful stroll along its green banks. This river crossroads, where the Vilaine and the canal meet, is ideal for cycling enthusiasts. The tree-lined …

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55.4 km

Nantes–Brest Canal — Scenic Landscape

Highlight • River

the landscape is constantly changing - nothing uniform - beautiful landscapes.
We thought the Loire was the highlight - no - it gets even better, driving through Brittany here. Simply indescribable.

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63.7 km

Redon is a small historic town full of charm. It is located at the crossroads of the western waterways with the Nantes-Brest canal, and the Channel-Ocean link. The Grand’Rue is lined with elegant half-timbered houses.

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90.3 km

Parc de Carheil

Forest

109 km

End point

Bus stop

Way Types & Surfaces

Way Types

93.3 km

5.59 km

5.30 km

2.66 km

1.39 km

1.18 km

< 100 m

Surfaces

91.9 km

10.5 km

4.15 km

2.71 km

194 m

Elevation

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

Weather

Tuesday 19 May

19°C

12°C

40 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Château de la Groulais – Paudais lock loop from Blain

Château de la Groulais

Port of Blain

Paudais lock

Beautiful scenery along the Nantes-Brest canal

L'Isac - super wide and aquatic plants

Canal de Nantes à Brest

Nantes–Brest Canal — Scenic Landscape

Redon

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