4.6
(208)
2,530
riders
121
rides
Touring cycling around Lac du Grand Maclu offers routes through a landscape shaped by glacial origins, featuring interconnected lakes, serene alpine meadows, and dense forests. The region is characterized by its limestone cliffs and diverse natural features, with many routes offering views of the Jura Mountains. Cyclists can explore paths around the Grand Maclu, Petit Maclu, Lac d'Ilay, and Lac de Narlay. The area is part of a Natura 2000 site, providing a rich ecosystem.
Last updated: May 9, 2026
4.1
(7)
32
riders
10.2km
00:40
110m
110m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.6
(5)
28
riders
38.7km
02:35
550m
550m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(4)
31
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(4)
62
riders
10.9km
00:42
110m
100m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
24
riders
54.9km
03:36
740m
740m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Boat mooring with wooden dock for fishing boats at Lac de Narlay.
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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.
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Beautiful view of the lake, and afterward, we had a lovely swim in the lake. Nice bar with delicious ice cream.
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Easy, shaded path, perfect for cooling off in hot weather.
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On most maps it is called "Lac d’Ilay". The other name probably comes from the small island "Île de la Motte" which is located in the lake.
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Unfortunately the stones are not always easy to see, today I had a lot of water.
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There are over 120 touring cycling routes available around Lac du Grand Maclu, catering to various skill levels from easy lakeside loops to more challenging rides with significant elevation gains.
Yes, Lac du Grand Maclu offers 10 easy touring cycling routes. A great option for beginners or families is the Lac de la Motte – Grand Maclu Lake loop from Le Frasnois, which is 10.9 km long with a gentle 110m elevation gain, making it suitable for all fitness levels.
Many of the touring cycling routes in the region are circular, allowing you to start and end at the same point. For example, the Narlay Lake Campsite – Scenic Forest Descent loop from Le Frasnois is a moderate 18.9 km circular path that winds through dense forests.
The region is known for its breathtaking vistas. The Pic de l'Aigle, reaching 993 meters, offers panoramic 360° views over the Jura Mountains, the Hérisson Valley, and even Mont Blanc on a clear day. Another unmissable spot is the 4 Lakes panoramic viewpoint, perched around 900 meters above sea level, providing stunning views of the glacial lakes.
While not directly on a touring cycling route listed, the impressive Cascades du Hérisson is a significant natural attraction in the region. It's a series of waterfalls that can be incorporated into cycling and hiking itineraries, offering a beautiful detour for nature lovers.
The best time to go touring cycling around Lac du Grand Maclu is typically during the spring, summer, and early autumn months (May to October). During these periods, the weather is generally mild, and the natural landscapes, including the lakes and forests, are at their most vibrant. Always check local weather forecasts before heading out.
The terrain around Lac du Grand Maclu is diverse, characterized by glacial lakes, dense forests, and alpine meadows. You can expect mostly paved surfaces on many routes, making them ideal for touring cyclists. Some routes, like the Lac de la Motte – Petit Maclu Lake loop from La Chaux-du-Dombief, will take you through varied terrain including both forests and open areas.
Yes, for experienced touring cyclists, there are more challenging routes with significant elevation gains. The Lac de la Motte – Grand Lac de Clairvaux loop from La Chaux-du-Dombief is a challenging 63.4 km route with 840m of elevation gain, offering a substantial ride through the Jura landscape.
The '4 Lakes' site, including Lac du Grand Maclu, is a protected Natura 2000 and Ramsar area, signifying its rich biodiversity. You might spot a rich flora, including rare species like the protected gentian pneumonanthe, and various birds and small mammals within the beautifully preserved meadows, peat bogs, and forests.
The touring cycling routes in Lac du Grand Maclu are highly rated by the komoot community, with an average score of 4.6 stars from over 200 reviews. Cyclists often praise the stunning natural beauty, the variety of routes for different skill levels, and the peaceful atmosphere of the glacial lakes and forests.
Yes, the broader Jura region offers longer touring cycling options. The 'Tour du Jura Vélo Loisirs' is a leisure-focused 158km loop cycling route, much of which is on greenways, accessible to beginners and e-bike users. This route immerses riders in the Jura's countryside, passing through forests and vineyards. You can find more information about this route on France Vélo Tourisme.
While specific cafes or pubs directly on every route are not detailed, the charming villages and towns in the broader Jura region, easily accessible from Lac du Grand Maclu, offer various amenities. Poligny, for example, is known as the capital of Comté cheese, and you'll find local establishments to refuel.


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