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Routes
Bike touring routes & trails
France
Brittany
Pontivy
Saint-Gonnery

Cadoret Lock – La Tertraie Lock loop from Saint-Gonnery

Routes
Bike touring routes & trails
France
Brittany
Pontivy
Saint-Gonnery

Cadoret Lock – La Tertraie Lock loop from Saint-Gonnery

Hard

4.5

(2)

10

riders

Cadoret Lock – La Tertraie Lock loop from Saint-Gonnery

06:12

101km

570m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 2, 2026

Waypoints

A

Start point

Bus stop

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1

22.4 km

Cadoret Lock

Highlight • Structure

Beautiful lock on the Nantes-Brest canal

Translated by Google •

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2

26.2 km

La Tertraie Lock

Highlight • Structure

Saint-Mélec chapel to see a little further north

Translated by Google •

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3

42.0 km

Rohan

Highlight • Settlement

Charming small town on the banks of the river Oust and the Canal from Nantes to Brest which merge for part of the way. It is the home to the …

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4

50.9 km

Ville Pérot lock

Highlight • Other

5

51.7 km

Ancient canal locks just before the confluence with the Rigole d'Hilvern. Both are accompanied by excellent tow-path bike trails. The Vélodyssée follows the Canal de Nantes à Brest.

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6

56.8 km

Locks 79 to 87 - Around Saint-Gérand

Highlight (Segment) • Other

Sequence of nine locks, seven of which are very close to each other. Boat traffic must have been very slow on this section…

Translated by Google •

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7

78.0 km

Last locks before reaching the barrage

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8

81.7 km

NB: This lock is equipped with public dry toilets and a mechanical repair station for self-service bicycles, pump, tools, frame rack, etc. In addition, the beverage dispenser also contains spare inner tubes!

Translated by Google •

Tip by

B

101 km

End point

Bus stop

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Way Types & Surfaces

Way Types

52.2 km

32.4 km

8.57 km

4.27 km

3.26 km

Surfaces

56.1 km

31.3 km

7.25 km

3.55 km

2.53 km

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Elevation

Elevation

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

Highest point (160 m)

Lowest point (40 m)

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Weather

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Thursday 21 May

29°C

13°C

0 %

Additional weather tips

Max wind speed: 13.0 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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Nearby routes

Moderate

4.8

25

From Château Josselin through the Vallée d'Oust — loop

02:00h

32.0km

320m

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