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France

Pays de la Loire

Châteaubriant-Ancenis

Héric

Terrier Lock – Lock 11 — La Prée loop from L'Écobut

Routes

France

Pays de la Loire

Châteaubriant-Ancenis

Héric

Terrier Lock – Lock 11 — La Prée loop from L'Écobut

Easy

5.0

(5)

riders

Terrier Lock – Lock 11 — La Prée loop from L'Écobut

01:48

37.3km

50m

Gravel riding

Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 26, 2026

Tips

Includes a segment that goes up or down a series of steps

You may need to carry your bike.

After 11.9 km for 7 m

Waypoints

Start point

Parking

Get Directions

4.04 km

Canal de Nantes à Brest

Lake

7.37 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

10.6 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

18.9 km

Gué de l'Atelier Lock

Highlight • Structure

Lock number 9. Here, the canal meets a wilder branch of the Isac. A little further on, you can even drive INTO the Isac (see photo).

Translated by Google •

Tip by

24.6 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

25.4 km

Covered rest areas - great!

Highlight • Other

We have already passed by such covered rest areas several times.
The grass is even cut here.
Rain (if the metal roof is still there) can't harm it.

Translated by Google •

Tip by

30.6 km

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

33.2 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

35.5 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

37.3 km

End point

Parking

Way Types & Surfaces

Way Types

31.0 km

4.63 km

552 m

457 m

439 m

256 m

< 100 m

Surfaces

28.8 km

6.41 km

1.01 km

974 m

134 m

Elevation

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

Weather

Wednesday 26 August

24°C

16°C

86 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Comments

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Terrier Lock – Lock 11 — La Prée loop from L'Écobut

Terrier Lock

Lock 11 — La Prée

Gué de l'Atelier Lock

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

Covered rest areas - great!

Pas d'Héric Lock on the Nantes to Brest Canal

Innovative Rest Area

L'Isac dam on the Nantes-Brest canal

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