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France
Pays de la Loire
Saint-Nazaire

Crossac

The best MTB trails around Crossac

4.4

(274)

953

riders

82

rides

Mountain biking around Crossac offers varied terrain, making it an excellent destination for outdoor activities. The region features dedicated VTT circuits through the unique wetland environment of the Marais de Brière, alongside forests and river valleys. The landscape also includes hills and provides expansive viewpoints over the surrounding marshes. Riders can explore routes that cater to different ability levels, from easy to moderate.

Best mountain bike trails around Crossac

  • The most popular mountain bike trail is Port of La Chaussée Neuve – Grande Brière marshes loop from Saint-Joachim, a 34.2 miles (55.0 km) trail that takes 3 hours 49 minutes to complete. This moderate route offers extensive views of the Grande Brière marshes.
  • Another top favourite among local mountain bikers is Rozé Port and Viewpoint – Rozé Locks loop from Saint-Joachim, an easy 19.4 miles (31.2 km) path. This route provides scenic outlooks and insights into the marsh's dynamic ecosystem.
  • Local mountain bikers also love the Menhir du Bois Hoël – Bois de la Batterie loop from Crossac, a 9.2 miles (14.8 km) trail leading through areas featuring the historic Menhir du Bois Hoël, often completed in about 1 hour.
  • Mountain biking around Crossac is defined by the unique Marais de Brière, diverse forests, and river valleys, with historical sites adding to the experience. The network offers options for different ability levels, from easy to moderate.
  • The routes in Crossac are highly rated by the komoot community with an average score of 4.4 stars from over 200 reviews. More than 800 mountain bikers have used komoot to explore Crossac's varied terrain.

Last updated: October 21, 2026

4.4

(25)

129

riders

#1.

Chapel of St Second – Menhir du Bois Hoël loop from Saint-Guillaume

34.7km

02:12

120m

120m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate
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Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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Popular around Crossac

The Loire from ocean to source — GR3 La Baule-Escoublac to Nantes

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The Loire from ocean to source — GR3 La Baule-Escoublac to Nantes

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Tips from the Community

Fred
September 16, 2026, Ile de mazin😍

One of the seven islands of the commune of Saint-Joachim

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Fred
July 27, 2026, Port de Bréca

Pretty port, with a beautiful view of the marshes

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Very photogenic spot. Picnic tables and toilets.

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perfect for strengthening the arms without a telescopic fork

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A pleasant little detour on the road to Pontchâteau. The Moulin de la Lande is a lovely place to stop and relax—a peaceful spot with an open view and an authentic atmosphere. Formerly a windmill belonging to the commune of Pontchâteau, the Moulin de la Lande bears witness to the region's milling past. Today, it stands in ruins.

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High viewpoint over the Briére marsh

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

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Fred
October 11, 2024, Chapelle St Second

17th century chapel built on the site where St Friard and St Secondel lived. A little further along the path you will find an oratory built above the fountain where the saints collected their water.

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Frequently Asked Questions

How many mountain bike trails are there in Crossac?

There are over 70 mountain bike trails available around Crossac, offering a wide range of options for different skill levels. The komoot community has rated these routes with an average score of 4.4 stars.

Are there any easy mountain bike trails suitable for beginners or families in Crossac?

Yes, Crossac offers many easy mountain bike trails. For instance, the Menhir du Bois Hoël – Bois de la Batterie loop from Crossac is an easy 14.8 km (9.2 miles) route that takes about 1 hour to complete, passing by the historic Menhir du Bois Hoël. Another great option is the Rozé Port and Viewpoint – Rozé Locks loop from Saint-Joachim, an easy 31.2 km (19.4 miles) path with scenic outlooks over the marsh's dynamic ecosystem.

What kind of terrain can I expect on mountain bike trails in Crossac?

The terrain around Crossac is diverse, featuring the unique wetland environment of the Marais de Brière, alongside forests and river valleys. You'll find a mix of flat to gently rolling landscapes, with some routes offering hills and expansive viewpoints over the surrounding marshes. While the area is generally well-suited for touring, some dedicated VTT circuits provide varied surfaces.

Are there any mountain bike routes that pass by historical sites or natural landmarks?

Absolutely. Many routes incorporate the region's rich history and natural beauty. For example, the Menhir du Bois Hoël – Bois de la Batterie loop from Crossac takes you past the ancient Menhir du Bois Hoël. You can also explore routes near the Rozé Port and Viewpoint, offering stunning vistas of the marshlands.

Can I find circular mountain bike routes in Crossac?

Yes, many of the mountain bike trails in Crossac are designed as loops, allowing you to start and finish at the same point. Examples include the popular Port of La Chaussée Neuve – Grande Brière marshes loop from Saint-Joachim and the Bois de la Batterie – Menhir du Bois Hoël loop from Saint-Joachim.

What are some notable attractions or points of interest near the mountain bike trails?

Beyond the trails, the region boasts several interesting sites. You can visit the scenic Rozé Port and Viewpoint, explore the ancient La Barbière Dolmen, or discover historical ruins like the Ruins of the Château de Lorieux. The Bretesche Castle and Ranrouët Castle are also within reach.

Are there any mountain bike trails that offer extensive views?

Yes, the unique landscape of Crossac, particularly its proximity to the Marais de Brière, provides many opportunities for scenic views. The Port of La Chaussée Neuve – Grande Brière marshes loop from Saint-Joachim is a moderate 55 km (34.2 miles) trail known for its extensive views of the Grande Brière marshes. The Rozé Port and Viewpoint – Rozé Locks loop from Saint-Joachim also offers excellent outlooks.

What is the best time of year for mountain biking in Crossac?

Crossac's marshlands and rural landscapes offer pleasant riding conditions throughout much of the year. Spring and autumn generally provide mild temperatures and beautiful scenery, making them ideal. Summer can also be enjoyable, though it's wise to start earlier in the day to avoid the midday heat. Winter rides are possible, but some trails might be wetter due to the marshy environment.

Are there any specific rules or permits required for mountain biking in the Brière Regional Natural Park?

Crossac is situated near the Brière Regional Natural Park, which is characterized by its unique wetlands. While general cycling is encouraged, it's always advisable to respect local regulations, stay on marked trails, and protect the fragile ecosystem. Specific permits for mountain biking are not widely publicized, but always check for any updated local guidelines, especially concerning protected areas.

Are there any moderate mountain bike trails for more experienced riders?

Yes, for those seeking a bit more challenge, the Port of La Chaussée Neuve – Grande Brière marshes loop from Saint-Joachim is a moderate 55 km (34.2 miles) trail. It offers a longer ride with varied terrain and extensive views, taking approximately 3 hours and 49 minutes to complete.

What do other mountain bikers enjoy most about the trails in Crossac?

The mountain bike trails in Crossac are highly rated by the komoot community, with an average score of 4.4 stars from over 200 reviews. Riders often praise the unique wetland environment of the Marais de Brière, the diverse forests, and the tranquil rural landscapes. The presence of historical sites and the variety of routes for different ability levels are also frequently highlighted.

Are there any mountain bike trails that are particularly good for spotting wildlife?

Given Crossac's location near the Brière Regional Natural Park and its extensive marshlands, many trails offer opportunities for wildlife observation. Routes that traverse the Marais de Brière, such as the Port of La Chaussée Neuve – Grande Brière marshes loop from Saint-Joachim, are excellent for observing local flora and fauna in their natural wetland habitat.

Most popular routes around Crossac

Traffic-free bike rides around Crossac

Most popular attractions around Crossac

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