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France
Pays de la Loire
Nantes

Saint-Mars-De-Coutais

The best walks and hikes around Saint-Mars-De-Coutais

4.5

(523)

2,803

hikers

202

hikes

Hiking around Saint-Mars-De-Coutais offers diverse natural landscapes, primarily shaped by the Lac de Grand-Lieu, France's largest natural plain lake in winter. The region features extensive marshes, tranquil countryside, vineyards, and wooded areas like Bois Joli. These varied environments provide a range of hiking experiences, from lakeside paths to marshland trails.

Best hiking trails around Saint-Mars-De-Coutais

  • The most popular hiking route is Tour of Lake Grand-Lieu Trail, a 11.5 miles (18.6 km) trail that takes 4 hours 44 minutes to…

Last updated: November 8, 2026

3.7

(7)

15

hikers

#1.

Tour of Lake Grand-Lieu Trail

18.6km

04:44

50m

50m

Moderate hike. Good fitness required. Easily walkable paths.

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Moderate

Moderate hike. Good fitness required. Easily walkable paths.

Moderate
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5.0

(5)

23

hikers

Easy hike. Easily walkable paths.

Easy

Moderate hike. Good fitness required. Easily walkable paths.

Moderate

3.0

(1)

12

hikers

Moderate hike. Good fitness required. Easily walkable paths.

Moderate
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Tips from the Community

Fred
October 14, 2023, Le Tenu

Beautiful views from the bridge over the Acheneau River and the Château de Saint-Mars de Coutais.

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1

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A picnic table, the shade of trees and the immediate proximity of water. The perfect place for a picnic during your hike.

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2

0

Fred
November 23, 2022, Le Port Hamoneau

Peaceful little port on the Acheneau River. The place seems very popular with anglers.

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1

0

Fred
May 9, 2022, Marais

Beautiful space between land and water, with many birds

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0

0

Fred
November 26, 2021, Le Port Hamoneau

Former port on Acheneau, in particular for the transport of lime, it is today a place apparently frequented for the fishing with the line.

Translated by Google•

1

0

Frequently Asked Questions

How many hiking trails are available around Saint-Mars-De-Coutais?

There are over 200 hiking routes around Saint-Mars-De-Coutais, catering to various skill levels. You'll find a good mix of easy, moderate, and a few more challenging trails to explore the diverse landscapes of the region.

What is the best time of year to go hiking in Saint-Mars-De-Coutais?

The area around Saint-Mars-De-Coutais is beautiful year-round, but spring and autumn offer particularly pleasant conditions for hiking, with mild temperatures and vibrant natural colors. Summer allows for sandy paths through the marshes, while winter brings a unique perspective as the Lac de Grand-Lieu expands, making it the largest natural plain lake in France.

Are there any easy hiking trails suitable for beginners or families?

Yes, Saint-Mars-De-Coutais offers many easy trails. For example, the Marshes loop from La Berderie is an easy 7.7 km route that takes you through the Grand-Lieu marshes. There are over 90 easy routes in the area, perfect for a relaxed outing.

What kind of landscapes can I expect to see while hiking here?

Hiking around Saint-Mars-De-Coutais offers diverse natural landscapes. You'll primarily encounter the vast Lac de Grand-Lieu and its surrounding marshes, which are significant for birdlife. The area also features tranquil countryside, vineyards, and wooded areas like Bois Joli, providing varied scenery depending on your chosen route.

Are there any circular hiking routes in Saint-Mars-De-Coutais?

Yes, many trails in the region are circular. The Tour of Lake Grand-Lieu Trail offers extensive circular sections, and the Le Tenu loop from Port-Saint-Père - Saint-Mars is another popular circular option that explores the countryside and riverbanks.

What are some interesting natural features or landmarks to look out for?

The main natural feature is the Lac de Grand-Lieu, France's second-largest ornithological reserve, offering excellent birdwatching opportunities. You can also explore the unique marshes with their distinct flora and fauna. For specific points of interest, consider visiting Lake Grand-Lieu, Pierre Aiguë site or the Etang de Roche Ballue.

Can I bring my dog on the hiking trails?

While many trails in France are dog-friendly, it's always best to check specific regulations for each route, especially in ecologically sensitive areas like the Lac de Grand-Lieu marshes, which are a significant bird sanctuary. Always keep your dog on a leash and respect local signage.

What do other hikers enjoy most about the trails in Saint-Mars-De-Coutais?

The trails around Saint-Mars-De-Coutais are highly rated by the komoot community, with an average score of 4.4 stars from over 300 reviews. Hikers often praise the tranquil countryside, the unique marshland scenery, and the opportunities for birdwatching around the Lac de Grand-Lieu.

Are there any trails that offer good viewpoints of the Lac de Grand-Lieu?

Yes, the landscapes around the Lac de Grand-Lieu offer numerous observation points. The Tour of Lake Grand-Lieu Trail, in particular, provides continuous views of the lake and its diverse birdlife, with sections specifically designed for observation.

Are there any specific trails that go through vineyards or wooded areas?

Yes, the region's diverse landscape includes both vineyards and wooded areas. The 'Circuit du Marais de Grand-Lieu' (a local trail, not specifically listed in the guide data but mentioned in region research) guides hikers through prairies, vineyards, and forests. You can also find pleasant scenery in wooded areas like Bois Joli.

Is public transport available to reach the trailheads?

Saint-Mars-De-Coutais is a tranquil countryside area. While local transport options may exist, it's generally recommended to have a car for flexibility in reaching various trailheads around the Lac de Grand-Lieu and its surrounding villages. Check local bus schedules for specific routes if relying on public transport.

Where can I find parking for the hiking trails?

Parking is typically available in the villages and towns near the trailheads, such as Saint-Mars-De-Coutais itself or other communes bordering the Lac de Grand-Lieu. Look for designated parking areas in town centers or near popular starting points for trails.

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