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France
Auvergne Rhône Alpes
Thonon-Les-Bains

Lac de Vallon

The best MTB trails around Lac de Vallon

4.4

(169)

1,359

riders

65

rides

Mountain bike trails around Lac de Vallon are set within the Haute-Savoie department of France, offering diverse terrain for riders. The lake, situated at 1080 meters at the foot of Roc d'Enfer, is a geosite within the Chablais UNESCO Global Geopark. The region features a landscape of emerald waters, surrounding mountains, dense forests, alpine meadows, and rocky paths. This varied environment provides a range of mountain biking experiences, from forest tracks to technical descents.

Best mountain bike trails around Lac…

Last updated: June 28, 2026

3.8

(4)

22

riders

#1.

Jambaz Pass – Saint Bruno Chapel loop from Lac de Vallon

23.3km

02:30

760m

760m

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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Hard

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

5.0

(2)

7

riders

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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CYCLITS CYCLING COLLECTIVE
October 18, 2025, Col de Jambaz

Nice Spot! Absolutely cyclitsapproved 🫵🫰

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This chapel, dedicated to Saint Bruno, founder of the Carthusian Order, was built on the remains of the former convent church of the Carthusian monastery of Sainte-Marie de Vallon[1]. In 1543, the Carthusians of Vallon were forced to leave their monastery, which was dismantled[1]. When they regained possession of their property in 1607, they found only ruins of the old charterhouse. Only a few sections of the walls remained standing[1]. After building their fortified house in Génicot[2] on the right bank of the Brevon (now on the lake), they erected a chapel in the part of the old charterhouse, in homage to Saint Bruno and in memory of the monks who preceded them. Since the walls of the choir of their former convent church and those of the sacristy had not collapsed, a nave surmounted by a wooden vault was built in 1651[3]. In 1793, it was sold as national property[3]. Abandoned by its new owners, it then passed to the Gougain family, along with the entire property known as "La chèvre"[1]. In 1833, the Carthusians returned to work repairing the walls and vault, redoing the roof, and installing a bell tower. Bishop Pierre-Joseph Rey inaugurated the renovated chapel during the summer of 1836[3]. It received various donations, including from Converset David François Marie[citation needed]. In 1847, it was finally transferred to the churchyard[1]. Processions would go there to pray for rain or good weather; but Bishop Louis Rendu banned these events in 1852[citation needed]. In 1855, it was burned to the ground. A violent wind blew as the Abbey building burned and burning embers set it alight in turn[1]. Nothing new remained except the walls. M Chappaz undertook a collection throughout the parish and had repairs carried out during 1856: plaster vault, roof, bell tower, gallery, floor, altar[3]. On July 11, 1857, the renovated chapel was blessed.

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The lake is 900 m long and covers an area of 15 hectares. The northwest shore is marked by a small peninsula, a sign of the advance of the landslide that created the lake. The eastern and western shores are relatively steep, while the northern and southern shores form gentle slopes. The lake was initially named "Lac de Chauronde"[note 1 by Léon Moret[3] in reference to the town of Chauronde where the landslide blocked the Brevon Valley. The name "Lac de Vallon" was finally defined by Bernard Dussart[2] in reference to the name of the valley, Vallon.

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Point d'intersection Chalet Blanc Altitude 1608m

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Point d'intersection Ramaz Altitude 1512m

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Intersection point Le Marquisat Altitude 875m

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The Church of Saint Nicholas is a Catholic place of worship located in the commune of Mégevette in Haute-Savoie. The parish was formerly part of the Aulps Abbey. A first church, dating from the 10th century, was too small and dilapidated, and was replaced by the current one, which was built from 1872 to 1880. With its triple nave, it housed a thousand parishioners at the time. It is placed under the patronage of Saint Nicholas and Saint Theodule. Built in a style that blends "pseudo-Romanesque and Italian Renaissance," it is topped by an onion-domed bell tower. Beneath the church, a crypt—the Fernex family's funerary chapel—housed a 17th-century fresco, of which, unfortunately, almost nothing remains. Between 1975 and 1992, the church was completely restored.

Translated by Google

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Point d'intersection Chalet Blanc Altitude 1665m

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Frequently Asked Questions

How many mountain bike trails are available around Lac de Vallon?

There are over 60 mountain bike trails around Lac de Vallon, offering a wide range of options for different skill levels. These include 1 easy route, 35 moderate routes, and 31 difficult routes, ensuring there's something for everyone.

What kind of terrain can I expect on mountain bike trails near Lac de Vallon?

The terrain around Lac de Vallon is highly varied, ranging from dense forest tracks and alpine meadows to rocky passages and technical descents. You'll encounter diverse environments, including paths around the emerald waters of the lake and routes at the foot of the majestic Roc d'Enfer.

Are there any family-friendly mountain bike trails around Lac de Vallon?

Yes, there is at least one easy mountain bike route suitable for beginners or family outings. The region generally offers paths that cater to all levels of experience, so you can find less challenging options to enjoy with your family.

What are some notable landmarks or viewpoints I can see while mountain biking?

Many trails offer stunning views of Lac de Vallon and the surrounding mountains. A significant landmark is the Saint Bruno Chapel, perched on a hill, which provides breathtaking panoramic vistas. The lake itself, formed by a landslide, is also a geosite within the Chablais UNESCO Global Geopark.

Are there any loop trails for mountain biking around Lac de Vallon?

Yes, many routes are designed as loops. For example, the Saint Bruno Chapel – Lac de Vallon loop from Lac de Vallon is a challenging 19.8 km route that offers a circular experience through the scenic landscape.

What is the best time of year for mountain biking in Lac de Vallon?

The region is generally excellent for outdoor activities, including mountain biking, during the warmer months. The diverse terrain, from forests to alpine meadows, is best enjoyed when conditions are dry and trails are clear of snow, typically from late spring through early autumn.

What do other mountain bikers enjoy most about the trails in Lac de Vallon?

The mountain bike trails in Lac de Vallon are highly rated by the komoot community, with an average score of 4.4 stars from over 150 reviews. Riders often praise the stunning mountainous landscape, the serene beauty of the lake, and the variety of trails that cater to different skill levels, from easy paths to technical, difficult routes.

Are there options for advanced mountain bikers seeking a challenge?

Absolutely. Lac de Vallon and the broader Bellevaux region are known for their challenging routes. For instance, the Col des Follys – Follies loop from Lac de Vallon is a difficult 15.3 km trail with significant elevation gain, offering a thrilling experience for experienced riders.

Is there parking available for mountain bikers at Lac de Vallon?

While specific parking details for mountain bikers are not always highlighted, Lac de Vallon is a popular outdoor destination, and parking facilities are generally available near the lake to accommodate visitors engaging in various activities.

Can I reach the mountain bike trails around Lac de Vallon using public transport?

Information on direct public transport links specifically for mountain biking access to Lac de Vallon is limited. However, the region is accessible, and local transport options to the Bellevaux area might be available, from which you could potentially connect to the trails.

Are dogs allowed on the mountain bike trails around Lac de Vallon?

While specific regulations for dogs on mountain bike trails are not detailed, many outdoor areas in France are dog-friendly, especially if dogs are kept on a leash. It's always recommended to check local signage or official regional guidelines for any specific restrictions before heading out with your dog.

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