Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Routes
France
Pays de la Loire
Saint-Nazaire
Savenay

Observatoire le Rocher – Marais du Syl Observatory loop from Savenay

Routes
France
Pays de la Loire
Saint-Nazaire
Savenay

Observatoire le Rocher – Marais du Syl Observatory loop from Savenay

Moderate

4.0

(2)

19

riders

Observatoire le Rocher – Marais du Syl Observatory loop from Savenay

04:40

74.4km

400m

Gravel riding

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 11, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

34.7 km

Observatoire le Rocher

Highlight • Other

Allows you to observe the surrounding flora and fauna

Translated by Google •

Tip by

2

36.2 km

Marais du Syl Observatory

Highlight • Viewpoint

Allows you to observe the surrounding flora and fauna

Translated by Google •

Tip by

3

46.6 km

Marais de la Roche

Highlight • Other

A 335-hectare marsh located just north of Cordemais. This marsh is mostly flooded between November and March, with water levels that can make some paths impassable. You can see many …

Translated by Google •

Tip by

4

48.5 km

Cordemais Estuary Observatory

Highlight • Viewpoint

This observatory offers a clear view of the Cordemais channel, the Loire, the "Maison Cheminée" (Chimney House), and the magnificent coal-fired power station. A pleasant walk through the wetland area is also available. There are also picnic tables.

Translated by Google •

Tip by

5

49.0 km

Port of Cordemais

Highlight • Structure

Small river port, fishing and marina, where you can visit the "Terre d'Estuaire" museum on the theme of the Loire estuary. Picnic tables, restaurant, restrooms, and drinking water are available. …

Translated by Google •

Tip by

6

49.1 km

The port of Cordemais is a blatant manifestation of the town's deep attachment to its estuary. Redeveloped in 2008, the site now offers more pitches and an ecological fairing area, …

Translated by Google •

Tip by

7

70.4 km

8

72.0 km

Mabille Valley Lake

Highlight • Other

The Lac de la Vallée Mabille, or Lac de Savenay, is a beautiful artificial reservoir that is worth a detour. By bike, you can easily go around the southern part …

Translated by Google •

Tip by

B

74.4 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

37.6 km

25.5 km

5.70 km

3.63 km

1.77 km

171 m

< 100 m

Surfaces

27.5 km

20.7 km

20.5 km

3.88 km

1.86 km

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Highest point (90 m)

Lowest point (0 m)

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Thursday 21 May

30°C

13°C

0 %

Additional weather tips

Max wind speed: 13.0 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.

Save

Edit route

Download GPX

Move start point

Print

Share

Embed on a website

Report an Issue

Nearby routes

Hard

3.7

16

Social Ride of Monkey Bike Bar

07:36h

73.9km

330m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy