Routes

Planner

Features

Updates

App

Get the App

Routes

Bike touring routes & trails

France

Pays de la Loire

Châteaubriant-Ancenis

Nort-Sur-Erdre

Blain 44 – Château de la Groulais loop from Circuit de l'écluse du Pas d'Héric

Routes

Bike touring routes & trails

France

Pays de la Loire

Châteaubriant-Ancenis

Nort-Sur-Erdre

Blain 44 – Château de la Groulais loop from Circuit de l'écluse du Pas d'Héric

Moderate

4.9

(49)

223

riders

Blain 44 – Château de la Groulais loop from Circuit de l'écluse du Pas d'Héric

02:26

38.0km

50m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 20, 2026

Tips

Cycling is not permitted along parts of this route

After 18.8 km for 301 m

After 19.2 km for 301 m

Waypoints

Start point

Parking

Get Directions

730 m

Pas d'Héric Lock on the Nantes to Brest Canal

Highlight • Structure

This is lock number 6 coming from Nantes

Translated by Google •

Tip by

3.30 km

Innovative Rest Area

Highlight • Rest Area

a railing to lean your bike on, a seat and even a lying area or picnic area.
I have never found anything like that in Germany, and here you can find it every few kilometers.

Translated by Google •

Tip by

5.65 km

L'Isac dam on the Nantes-Brest canal

Highlight • Other

The canal offers very beautiful walks accessible to everyone with small more technical passages such as "the single hidden" near the dike. Opposite the end of wood beach is very nice too.

Translated by Google •

Tip by

10.7 km

Canal de Nantes à Brest

Lake

14.0 km

Terrier Lock

Highlight • Other

Lock number 10. Very friendly welcome at the lock house, which offers drinks, ice creams, etc. And the terrace under the trees is really nice.

Translated by Google •

Tip by

17.2 km

Lock 11 — La Prée

Highlight • Structure

A lock among others? No, because here you can have your bike repaired! This repair workshop is ideal because it is located along the Vélodyssée.

Translated by Google •

Tip by

18.7 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.

Translated by Google •

Tip by

19.1 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.

Translated by Google •

Tip by

31.3 km

View of the Isac dam and the Nantes-Brest canal from Bout du Bois

Highlight • Viewpoint

This passage runs along several hundred meters of the dike which separates the Isac river from the Nantes-Brest canal. Always nice to see two rivers side by side.
The surroundings are very quiet and with shade if necessary.

Translated by Google •

Tip by

38.0 km

End point

Parking

Way Types & Surfaces

Way Types

30.4 km

4.63 km

2.10 km

498 m

308 m

< 100 m

Surfaces

28.6 km

6.00 km

2.05 km

1.13 km

168 m

Elevation

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

Weather

Monday 31 August

23°C

13°C

0 %

Additional weather tips

Max wind speed: 5.0 km/h

to get more detailed weather forecasts along your route

Comments

Want to know more?

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

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

Easy

4.4

172

Loop from Nantes to Saint-Julien de Concelles along the Loire and the countryside

01:52h

31.7km

90m

Easy

4.6

175

Cycling Loop between Anjou and the Pays Nantais

01:31h

23.4km

60m

Easy

3.4

Centre and South of Nantes by the CYCLE PATHS — loop

01:53h

31.6km

130m

Hard

3.7

Nantes-Nort-sur-Erdre Cycling Loop

05:32h

81.8km

380m

Hard

4.0

The Marshes Loop

05:08h

82.6km

360m

Moderate

4.6

1,251

Oudon Castle – The Loire at Oudon loop from Oudon

02:56h

49.8km

90m

Moderate

4.6

1,186

Beau Rivage Riverside Path – Oudon Castle loop from Haluchère-Batignolles

03:10h

53.2km

120m

Easy

4.4

Entre Sèvre et Marais Loop

02:00h

33.0km

140m

Moderate

4.4

703

Couëron Ferry – Port of Couëron loop from La Basse-Indre - Saint-Herblain

02:28h

40.8km

150m

Moderate

4.6

861

Mauves-sur-Loire Bridge – Port of La Pierre-Percée loop from Nantes

02:00h

34.1km

50m

Moderate

4.3

529

The Rings – Couëron Ferry loop from Nantes

02:47h

46.0km

170m

Hard

4.8

483

Mauves-sur-Loire Bridge – The Loire at Oudon loop from Mauves-sur-Loire

06:03h

103km

230m

Blain 44 – Château de la Groulais loop from Circuit de l'écluse du Pas d'Héric

Pas d'Héric Lock on the Nantes to Brest Canal

Innovative Rest Area

L'Isac dam on the Nantes-Brest canal

Terrier Lock

Lock 11 — La Prée

Blain 44

Château de la Groulais

View of the Isac dam and the Nantes-Brest canal from Bout du Bois

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️