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Ponts-Neufs Viaduct – Great Blue Lake loop from Yffiniac

Ponts-Neufs Viaduct – Great Blue Lake loop from Yffiniac

Moderate

4.7

(7)

164

riders

Ponts-Neufs Viaduct – Great Blue Lake loop from Yffiniac

04:24

65.2km

710m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is accessible with public transport.

Last updated: June 18, 2026

Tips

Includes a segment in which cycling is not permitted

After 33.4 km for 232 m

Waypoints

Start point

Train Station

Get Directions

7.62 km

Ponts-Neufs Viaduct

Highlight • Viewpoint

Avoid the busy road below, and take this superb viaduct instead!

fr.wikipedia.org/wiki/Viaduc_des_Ponts-Neufs

Translated by Google •

Tip by

10.3 km

Gouessant Dam in Morieux

Highlight • Structure

worth dwelling on

Translated by Google •

Tip by

10.3 km

The Pont-Rolland dam and reservoir, located on the Gouessant estuary, in the municipalities of Morieux and Hillion, were built in the 1930s and were the subject of a concession to EDF for the production of hydroelectricity until 2010.

Translated by Google •

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15.9 km

View of Saint-Brieuc Bay

Highlight • Other

Superb view of the bay.

Translated by Google •

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20.4 km

Dahouët Harbour

Highlight • Settlement

Tidal port, natural haven fitted out in the 19th century to accommodate large-scale fishing vessels. Notre-Dame-de-la-Garde oratory at the entrance to the port. Former Salines basin transformed into a floating …

Translated by Google •

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20.6 km

Port Dahouët

Highlight • Other

A quiet little port area with a friendly tabac/bar

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30.2 km

Caroual Viaduct

Highlight • Bridge

Located on the edge of the seafront in Caroual, the Caroual viaduct is a work of art on the departmental railway line linking Saint-Brieuc to Saint-Briac, built between 1913 and …

Translated by Google •

Tip by

33.5 km

Great Blue Lake

Highlight • Lake

The larger of two lakes formed from a disused quarry.

Translated by Google •

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37.6 km

Plage de Caroual

Beach

65.2 km

End point

Train Station

Way Types & Surfaces

Way Types

36.4 km

12.4 km

8.66 km

5.62 km

1.97 km

192 m

Surfaces

30.7 km

26.2 km

7.31 km

486 m

320 m

238 m

Elevation

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

Highest point (100 m)

Lowest point (0 m)

Weather

Wednesday 24 June

39°C

19°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

to get more detailed weather forecasts along your route

Comments

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Ponts-Neufs Viaduct – Great Blue Lake loop from Yffiniac

Ponts-Neufs Viaduct

Gouessant Dam in Morieux

Pont Rolland

View of Saint-Brieuc Bay

Dahouët Harbour

Port Dahouët

Caroual Viaduct

Great Blue Lake

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