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Sucé sur Erdre bridge and port – Le Portillon loop from Port-Saint-Père - Saint-Mars

Sucé sur Erdre bridge and port – Le Portillon loop from Port-Saint-Père - Saint-Mars

Moderate

riders

Sucé sur Erdre bridge and port – Le Portillon loop from Port-Saint-Père - Saint-Mars

04:46

107km

710m

Road cycling

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

Last updated: May 13, 2026

This route includes a ferry crossing

Tips

Temporary access restrictions

Includes segments with temporary access restrictions. Check ahead to confirm restricted segments are open to the public.

After 12.5 km for 484 m

Waypoints

Start point

Train Station

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13.5 km

Marais Audubon

Highlight • Natural

The Couëron marshes, known as the Audubon marshes, are part of the vast group of estuarine marshes located near the Loire and closely linked to its regime. They represent 13% …

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24.3 km

Our Lady of Bongarant

Highlight • Other

Pretty chapel from the beginning of the 15th century in a very Breton style.

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34.8 km

Côte de la Madeleine

Highlight (Segment) • Climb

A 1.5km climb in two parts separated by a descent. The slope varies from 4 to 8%.

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37.9 km

Côte du Rouchais

Highlight (Segment) • Other

You can pass only on one side.
You can go up. But down is forbidden.

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47.8 km

Sucé sur Erdre bridge and port

Highlight • Bridge

Sucé bridge on Erdre

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79.0 km

Le Portillon

Highlight • River

Old small port, typical of the banks of the Sèvre. A peaceful little park on the bank with picnic tables.
Starting point for various hiking trails along the river or through the vineyard.

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103 km

Window over Lake Grand-Lieu

Highlight • Other

The lake is a natural site and an ornithological reserve and its access is very limited to the public. There are not so many views on this one. You can find them on the lacdegrandlieu.com website

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105 km

Grand-Lieu Lake Nature Reserve

Highlight • Other

Superb walk along the lake

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107 km

End point

Train Station

Way Types & Surfaces

Way Types

99.4 km

4.23 km

3.09 km

377 m

173 m

112 m

< 100 m

Surfaces

92.5 km

13.8 km

1.03 km

< 100 m

Elevation

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

Highest point (80 m)

Lowest point (0 m)

Weather

Tuesday 26 May

34°C

17°C

0 %

Additional weather tips

Max wind speed: 18.0 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.

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Sucé sur Erdre bridge and port – Le Portillon loop from Port-Saint-Père - Saint-Mars

Marais Audubon

Our Lady of Bongarant

Côte de la Madeleine

Côte du Rouchais

Sucé sur Erdre bridge and port

Le Portillon

Window over Lake Grand-Lieu

Grand-Lieu Lake Nature Reserve

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