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Mountain biking trails

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

Routes

Mountain biking trails

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

Easy

4.4

(5)

riders

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

01:21

23.3km

80m

Mountain biking

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 24, 2026

Tips

Includes a segment in which cycling is not permitted

After 12.0 km for 53 m

Waypoints

Start point

Train Station

Get Directions

5.52 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

12.0 km

Footbridge over the Falleron

Highlight • Bridge

Small docking point for ships on the canal.

Translated by Google •

Tip by

12.0 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

12.6 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 15th century, more than 200 ships loaded in the bay of Bourgneuf (then known as “bay of Brittany”). Gradually, the siltation of the bay causes the end of the activity.
Thanks to a lock built in 1879 which regulates the waters of the Marais and those of the sea, the port's activity can continue around oyster farming and yachting.

Translated by Google •

Tip by

14.5 km