Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Routes
Bike touring routes & trails
France
Pays de la Loire
Saint-Nazaire
Crossac

Island of Fédrun – Rozé Port and Viewpoint loop from Crossac

Routes
Bike touring routes & trails
France
Pays de la Loire
Saint-Nazaire
Crossac

Island of Fédrun – Rozé Port and Viewpoint loop from Crossac

Easy

5.0

(2)

6

riders

Island of Fédrun – Rozé Port and Viewpoint loop from Crossac

01:12

21.2km

40m

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

Last updated: November 14, 2025

Download GPX

Save

Move start point

Edit route

Navigate

Send to Phone

Waypoints

A

Start point

Bus stop

Get Directions

1

6.20 km

Saint-Joachim Church

Highlight • Other

2

6.31 km

Saint-Joachim war memorial

Highlight • Other

3

8.09 km

Island of Fédrun

Highlight • Other

The most touristic of the eight islands that make up the commune of Saint-Joachim, notably for its famous thatched cottages typical of Brière and its Michelin-starred restaurant, La Mare aux Oiseaux.

Translated by Google •

Tip by

4

11.9 km

Rozé Port and Viewpoint

Highlight • Other

To do in different seasons to see the evolution of the marsh.

Translated by Google •

Tip by

5

11.9 km

Viewing platform over the marshes, Feret island, Rozet canal and Saint Nazaire bridge

Highlight • Other

The tower offers a very beautiful panorama of the park, it is worth stopping to climb.

Translated by Google •

Tip by

6

12.0 km

Rozé Locks

Highlight • Other

Beautiful lock to see at the picnic area of the port of Rozé in the Parc de la Brière.

Translated by Google •

Tip by

B

21.2 km

End point

Bus stop

Way Types & Surfaces

Way Types

8.62 km

6.63 km

5.95 km

Surfaces

14.5 km

6.55 km

120 m

< 100 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

Sign up to see more specific route details

Sign up for free

Weather

Powered by AerisWeather

Today

Friday 14 November

19°C

13°C

70 %

If you start your activity now...

Max wind speed: 25.0 km/h

to get more detailed weather forecasts along your route

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

Loading

Nearby routes

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Easy

4.4

236

Pornichet — Guérande, circuit by the Marais salants de Guérande and the Vélocéan

01:51h

31.6km

140m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

4.5

99

Loop by the coastal cycle route and the country paths at Parc naturel régional de Brière

02:59h

49.7km

190m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

4.7

1,463

Port of Pouliguen – Guérande Salt Marshes loop from Pornichet

02:56h

50.4km

150m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

4.7

1,386

Guérande Salt Marshes – Marais Salants de Guérande loop from Trescalan

02:54h

50.5km

160m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Easy

4.3

33

La Vélocéan — From La Baule to Saint-Nazaire

01:23h

22.8km

110m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Hard

4.5

15

The V42 along the Vilaine — loop from Pénestin to Redon

06:49h

106km

660m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

4.7

1,240

Tharon's large beach – Sablons Beach loop from Saint-Michel-Chef-Chef

03:21h

54.8km

340m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

2

Route in the Parc Naturel Régional de Brière — circuit starting from Savenay

04:51h

82.7km

220m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

3.5

7

Saint-Père-en-Retz, Saint-Brevin-les-Pins et Corcept — boucle via EV1, EV6 et les routes campagnardes

02:03h

34.7km

130m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Moderate

4.5

4

Saint-Père-en-Retz — Saint-Michel-Chef-Chef circuit via EV1

01:57h

31.4km

180m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Easy

5.0

5

Saint-Viaud, Paimbœuf and the menhirs of the area — loop

01:53h

30.9km

120m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Moderate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Hard
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Hard

5.0

4

Around Béganne — loop

03:04h

48.6km

500m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepacking
B2B
PartnersConnectEmbed routes
Company
PressWhat's NewPioneersProduct UpdatesAmbassadorsAdventure Hub
Community
Help GuidesSupportKomoot Treasure Hunt
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy
Terms of Service
Community guidelines
Vulnerability disclosure program
Imprint
Information for law enforcement