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Marais de Lyarne – Tharon's large beach loop from Préfailles

Marais de Lyarne – Tharon's large beach loop from Préfailles

Moderate

4.0

(1)

riders

Marais de Lyarne – Tharon's large beach loop from Préfailles

03:00

74.6km

310m

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 12, 2026

Waypoints

Start point

Bus stop

Get Directions

2.24 km

La Plaine-sur-Mer

Highlight • Other

It is a small town where you will find everything you need; bakery, grocery stores, supermarkets. There is also a tourist office in the center of the town if you want some information on the region.

Translated by Google •

Tip by

21.0 km

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 Bay of Bourgneuf. Near the town center of Moutiers en Retz, the beach is bordered by a promenade exclusively reserved for pedestrians. Pretty silted walk when I hiked it.

Translated by Google •

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23.5 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.

Translated by Google •

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26.4 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 these waters by the Marais Breton Vendée or Marô. There are still 3 main locks in Port la Roche and 2 in Fresne.

Translated by Google •

Tip by

32.5 km

Chapel of Prigny

Highlight • Religious Site

Prigny, is actually the old village of Moutiers-en-Retz, and this chapel was the first church of Moutiers, because until the end of the Middle Ages, Moutiers were only a simple suburb of Prigny. Located on the former shore of the Gulf of Machecoul, Prigny was then a fortified town overlooking the Breton marshes.
This building is now called a chapel by the inhabitants, simply because of its small size. Dating from the 11th century, the chapel of Prigny is a squat building in the primitive Romanesque style.
It is currently the subject of a restoration program.

Translated by Google •

Tip by

64.3 km

Saint Michael's Church

Highlight • Other

French strandbad

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65.6 km

Saint-Michel-Chef-Chef Coast and Fishing Huts

Highlight • Beach

Nice little town by the beach, but do not hesitate to pass near the church, a famous biscuit factory sells in store (St Michel cake). For gourmets and to fill up on energy!

Translated by Google •

Tip by

67.0 km

Tharon's large beach

Highlight • Beach

Beautiful stand - completely in home hands. Without annoying salesmen, probably because of good infrastructure (ice cream truck, restaurants, takeaways ...). Good facilities with changing rooms and showers.
Ebb and flood let a lot of time to build castles!

Translated by Google •

Tip by

74.6 km

End point

Bus stop

Way Types & Surfaces

Way Types

41.6 km

20.6 km

8.05 km

4.34 km

< 100 m

Surfaces

68.8 km

5.69 km

< 100 m

Elevation

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

Highest point (60 m)

Lowest point (undefined)

Weather

Sunday 12 July

31°C

22°C

53 %

Additional weather tips

Max wind speed: 28.0 km/h

to get more detailed weather forecasts along your route

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Marais de Lyarne – Tharon's large beach loop from Préfailles

La Plaine-sur-Mer

Pré Vincent Beach

Marais de Lyarne

Port du Collet

Chapel of Prigny

Saint Michael's Church

Saint-Michel-Chef-Chef Coast and Fishing Huts

Tharon's large beach

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