The best MTB trails around Lac du Grand Maclu
4.5
(206)
1,245
riders
93
rides
Mountain biking around Lac du Grand Maclu features a landscape characterized by forested hills, clear lake shores, and varied terrain suitable for off-road cycling. The region offers a mix of challenging ascents and scenic descents through woodlands and along the water's edge. Mountain bike trails often navigate around the interconnected lakes, providing diverse riding experiences. The area's geology contributes to a dynamic environment for mountain biking.
Best mountain bike trails around Lac du Grand Maclu
- The most popular mountain bike…
Last updated: July 6, 2026
4.6
(5)
15
riders
40.9km
03:22
750m
750m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.7
(3)
26
riders
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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3.0
(3)
7
riders
17.4km
01:22
290m
290m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
5
riders
54.5km
04:16
830m
840m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(1)
5
riders
42.4km
03:24
750m
750m
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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Tips from the Community
Cool passage, definitely take a lamp.
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A gravel, easy-to-walk hiking trail runs along the lakeshore, offering repeated, beautiful views of Lac Le Grand Maclu.
5
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Small, rocky stretch of beach that you can climb down to, as well as good views of Lac Le Grand Maclu.
5
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A waterfall with a larger pool and a smaller cascade in a beautiful setting. In front of it is a small stone lynx statue.
6
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The Bief de la Ruine waterfall is located in the spectacular Malvaux Gorge. One of the most astonishing features of this waterfall is the fact that it only comes alive after heavy rainfall or during snowmelt. When it dries, it gives way to the spectacle of the carved stone, revealing the "Creux des Joyaux," a natural cave where the water swirls with varying degrees of vigor, polishing a multitude of limestone pebbles thanks to the force of its current.
7
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Lacs de Maclu are two adjacent lakes in the western part of the French Jura, in the Jura department of Franche-Comté. They are located at an elevation of 779 m in a depression in the High Jura, in the region of the Five Lakes near Le Frasnois, about 12 km south of Champagnole. The Petit Maclu, located to the northeast, has an area of 5 hectares, a length of about 500 m, and a maximum width of about 120 m. Its greatest depth is 11 m. It lies entirely within the municipal territory of Le Frasnois.
6
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waterfalls don't always flow
1
0
Beautiful view of the lake, and afterward, we had a lovely swim in the lake. Nice bar with delicious ice cream.
0
0
Frequently Asked Questions
How many mountain bike trails are available around Lac du Grand Maclu?
There are over 90 mountain bike trails in the Lac du Grand Maclu area. These routes offer a diverse range of experiences, from easier rides to more challenging ascents and descents.
Are there easy mountain bike trails suitable for beginners or families?
Yes, the region offers a selection of easier mountain bike trails. Approximately 12 routes are categorized as easy, providing a gentler introduction to the area's scenic beauty. These trails often feature less elevation gain and smoother paths, making them suitable for those looking for a relaxed ride or families with children.
What are the typical distances and durations for mountain bike trails in this area?
Trail distances vary significantly. For example, the Grand Maclu Lake – Shore of Lac de Narlay loop from Le Frasnois is about 10.8 miles (17.4 km) and takes around 1 hour 20 minutes. Longer, more challenging routes like the Grand Maclu Lake – Shore of Lac de Narlay loop from La Chaux-du-Dombief cover 25.1 miles (40.3 km) and can take over 3 hours.
Are there challenging mountain bike trails for experienced riders?
Absolutely. The Lac du Grand Maclu area features 29 difficult mountain bike trails, offering significant climbs and technical descents. Routes such as the The Hérisson Waterfalls – Fallen Tree at Lac de Bonlieu loop from Le Frasnois, spanning over 43 km with substantial elevation, provide a demanding experience for advanced riders.
What is the best time of year for mountain biking around Lac du Grand Maclu?
The best time for mountain biking is typically from spring through autumn (April to October). During these months, the weather is generally milder, and trails are dry and clear. Summer offers warm conditions, while spring and autumn provide cooler temperatures and vibrant foliage.
Can I find circular mountain bike routes in the region?
Yes, many of the mountain bike trails around Lac du Grand Maclu are designed as circular routes, allowing you to start and finish at the same point. Examples include the Grand Maclu Lake – Shore of Lac de Narlay loop from La Chaux-du-Dombief and the Grand Maclu Lake – Shore of Lac de Narlay loop from Le Frasnois, which offer scenic loops around the lakes.
Are dogs allowed on the mountain bike trails?
Generally, dogs are permitted on trails in the Lac du Grand Maclu area, especially if kept on a leash. However, it's always advisable to check specific trail regulations or local signage, particularly in nature reserves or protected areas, to ensure compliance and respect for wildlife.
Are there any notable viewpoints or attractions along the mountain bike trails?
The trails often provide extensive views of the interconnected lakes, including Lac du Grand Maclu and Lac de Narlay, as well as the surrounding forested hills. The Tour des 4 lacs – The Hérisson Waterfalls loop from Le Frasnois, for instance, takes you past the impressive Hérisson Waterfalls, a major natural attraction in the region.
Is public transport available to access the mountain bike trails?
Public transport options directly to trailheads around Lac du Grand Maclu can be limited due to the rural nature of the area. It is often more convenient to travel by car to reach starting points in villages like La Chaux-du-Dombief or Le Frasnois, where parking is typically available.
What do other mountain bikers enjoy most about the trails in Lac du Grand Maclu?
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 200 reviews. Reviewers often praise the diverse terrain, the beautiful lake views, and the challenging yet rewarding nature of the routes through the forested hills.
Are there any permits required for mountain biking in the Lac du Grand Maclu region?
No specific permits are generally required for mountain biking on the established trails around Lac du Grand Maclu. However, always respect private property, follow local signage, and adhere to any regulations within designated natural parks or protected zones.
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