Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Bike touring routes & trails

Dukes' Lake – View of Lac au Duc loop from Saint-Marcel

Bike touring routes & trails

Dukes' Lake – View of Lac au Duc loop from Saint-Marcel

Moderate

4.2

(9)

29

riders

Dukes' Lake – View of Lac au Duc loop from Saint-Marcel

03:08

51.8km

310m

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: May 14, 2026

Waypoints

A

Start point

Parking

Get Directions

1

1.03 km

Saint-Marcel Memorial Route

Highlight • Historical Site

Heroic village, having received a citation for the Croix de Guerre in 1948

Translated by Google •

Tip by

2

9.49 km

Former railway bridge over the Nantes–Brest Canal

Highlight • Bridge

Nice crossing of two long-distance cycle routes: the Vélodyssée coastal route which runs along the Nantes to Brest canal and the track between Saint-Malo and Rhuys which takes the old railway bridge.

Translated by Google •

Tip by

3

19.5 km

Dukes' Lake

Highlight • Other

perfect stopover for hikers at the campsite with swimming in the lake.

Translated by Google •

Tip by

4

19.8 km

Lac au Duc

Highlight • Lake

Created by monks in the 12th century, Lac au Duc is the largest of Brittany's inland lakes. Its 250 hectares extend between Ploërmel, Taupont and Loyat.

Measuring approximately 5.5 km …

Translated by Google •

Tip by

5

25.1 km

Wooden boardwalk on the shore of Lac au Duc

Highlight • Trail

6

25.4 km

Birdwatching Platform

Highlight • Structure

7

28.8 km

View of Lac au Duc

Highlight • Lake

It is one of the largest lakes in Brittany with a length of 5.5 kilometers and a width of between 500 and 900 meters depending on the location. Lake Ploërmel …

Translated by Google •

Tip by

8

45.3 km

Bridge Over the Canal

Highlight • Bridge

B

51.8 km

End point

Parking

Way Types & Surfaces

Way Types

36.5 km

9.10 km

3.34 km

1.49 km

765 m

630 m

Surfaces

45.6 km

2.97 km

2.74 km

335 m

124 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Highest point (70 m)

Lowest point (20 m)

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Tuesday 14 July

32°C

19°C

-- %

Additional weather tips

Max wind speed: -- km/h

to get more detailed weather forecasts along your route

Comments

Want to know more?

Sign up for a free komoot account to join the conversation.

Sign up for free

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

Print

Share

Embed on a website

Report an Issue

Report restricted access

Nearby routes

4.8

27

From Château Josselin through the Vallée d'Oust — loop

02:00h

32.0km

320m

6

La Voie Verte Guer/Ploërmel — loop

03:11h

52.0km

330m

5.0

4

Béganne Bike Loop

03:04h

48.6km

500m

4.7

403

Historic centre of Malestroit – Magpie Island loop from Malestroit

06:33h

107km

360m

4.5

241

Vannes – Port of Vannes loop from Saint-Avé

02:27h

38.1km

200m

4.8

401

Montertelot Lock – Moulin de Blond Lock loop from Aire de covoiturage de La Pyramide

02:30h

43.1km

210m

4.6

307

Malestroit Lock – Canal de Nantes à Brest loop from Malansac

06:44h

108km

490m

4.8

221

Canal de Nantes à Brest – Magpie Island loop from Saint-Vincent-sur-Oust

01:54h

28.1km

110m

4.9

172

Vannes – Port-Anna Harbor loop from Aéroport de Vannes - Golfe du Morbihan

03:41h

58.3km

350m

4.6

232

View of Château de Suscinio – Suscinio Castle loop from Noyalo

03:06h

51.1km

220m

4.7

301

La Tertraie Lock – Cadoret Lock loop from Écluse du Rouvray

02:28h

42.4km

120m

4.6

293

Josselin Castle – Moulin de Blond Lock loop from Montertelot

01:46h

30.0km

130m