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Routes
Road cycling routes
France
Pays de la Loire
Saint-Nazaire
La Bernerie-En-Retz

Marais de Lyarne – Port du Collet loop from La Bernerie-en-Retz

Routes
Road cycling routes
France
Pays de la Loire
Saint-Nazaire
La Bernerie-En-Retz

Marais de Lyarne – Port du Collet loop from La Bernerie-en-Retz

Moderate

19

riders

Marais de Lyarne – Port du Collet loop from La Bernerie-en-Retz

02:12

51.0km

150m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: May 9, 2026

Waypoints

A

Start point

Train Station

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1

947 m

Maurice Giros Pond Beach

Highlight • Beach

Body of water very practical when the beach is at low tide

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2

4.06 km

Pré Vincent Beach

Highlight • Beach

Facing south, Pré-Vincent beach is cut by numerous groynes of wood or rocks. At low tide, the sea retreats several kilometers and gives way to the famous mud from the …

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3

6.09 km

Marais de Lyarne

Highlight • Other

The Lyarne marsh, Natura 2000 site, is a former salt marsh with dunes and reedbeds. It is a haven of peace for birds and horses.

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4

9.14 km

Port of Collet

Highlight • Other

For centuries, the port of Collet was the main point of departure for the export of salt produced in the salt marshes of the coast. At the end of the …

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5

9.69 km

Port du Collet

Highlight • Other

Water management is essential for life in the swamp, it is managed by the SAH. (Syndicate of the Southern Loire Hydraulic Development). 51 municipalities are affected by the regulation of …

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6

31.8 km

Saint-Hilaire Church

Highlight • Religious Site

Imposing late 19th century church with a fairly high bell tower

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7

36.1 km

Superb fresco

Highlight • Other

8

36.2 km

Neo-Gothic style church. It was inaugurated in 1894, replacing a church deemed too small and too fragile, which itself replaced an earlier church destroyed during the Vendée wars.

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B

51.0 km

End point

Train Station

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Way Types & Surfaces

Way Types

39.9 km

6.69 km

2.63 km

1.51 km

354 m

< 100 m

Surfaces

36.3 km

14.3 km

184 m

184 m

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Elevation

Elevation

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

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Weather

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Today

Sunday 31 May

21°C

14°C

0 %

Additional weather tips

Max wind speed: 18.0 km/h

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

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