4.6
(215)
2,455
riders
43
rides
No traffic touring cycling routes around Lac D'Ilay traverse a landscape shaped by glacial activity, featuring turquoise waters and imposing cliffs. This region, part of the "4 Lakes" area, includes Lac de Narlay, Lac du Petit Maclu, and Lac du Grand Maclu. The area is characterized by dense forests, the Hérisson River, and its famous waterfalls. It is a protected natural environment, classified as a Natura 2000 and Ramsar site.
Last updated: May 10, 2026
5.0
(3)
14
riders
18.9km
01:14
280m
280m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
10
riders
32.1km
02:11
490m
500m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
10
riders
29.0km
02:06
510m
510m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6
riders
4.61km
00:19
60m
60m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
3
riders
18.8km
01:29
300m
300m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Lac D'Ilay
🌿 Lake Narlay: Essential Information Location: Frasnois municipality, in the Lakes Region (Jura). Altitude: 748 m. Surface area: 41 ha. Depth: Up to 40 m, making it the deepest lake in the Jura. Origin: Glacial lake, likely formed by a rockfall. Environment: Meadows, forests, peat bogs, Natura 2000 and Ramsar sites. (Copilot)
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Boat mooring with wooden dock for fishing boats at Lac de Narlay.
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Beautiful view of Lac de Narlay from the hiking trail.
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Lac de Narlay is a lake in the Jura department of France, about 10 km south of Champagnole in Franche-Comté. It lies at an altitude of 748 m in the municipality of Le Frasnois and covers an area of approximately 0.4 km². The lake is 950 m long and 625 m wide. Its maximum depth is 40 m.
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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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Very pleasant banks, hill to climb back up the Frasnois quite steep.
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Easy, shaded path, perfect for cooling off in hot weather.
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Lake Chalain is a glacial lake (10th largest natural lake in France), where a lakeside city dating from the Neolithic period, classified as a world heritage site, was discovered.*The view from the Fontenu belvedere will reveal its turquoise waters. !
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There are over 35 dedicated no-traffic touring cycling routes around Lac d'Ilay listed on komoot. These routes cater to various skill levels, with a good mix of easy, moderate, and difficult options to explore the stunning Jura landscape.
Yes, Lac d'Ilay offers several easy, traffic-free routes perfect for beginners or families. For a gentle introduction, consider the Lake Narlay – Lac de Narlay loop from Le Frasnois, which is just under 5 km with minimal elevation gain. The broader region also features routes like the Tour du Jura Vélo Loisirs, which combines greenways with quiet roads, ideal for leisurely cycling.
The no-traffic touring cycling routes around Lac d'Ilay immerse you in a remarkable natural setting. You'll encounter the wild, glacial-origin lakes with their distinctive turquoise waters, often framed by imposing cliffs. The area is part of the larger '4 Lakes' region, including Lac de Narlay, Lac du Petit Maclu, and Lac du Grand Maclu. Many routes also pass through dense forests, alongside rivers like the Hérisson, and offer glimpses of the famous Hérisson Waterfalls, adding dramatic cascades to the diverse landscape.
Yes, many of the no-traffic touring cycling routes around Lac d'Ilay are designed as circular loops, allowing you to start and end at the same point. For example, the Narlay Lake Campsite – Scenic Forest Descent loop from Le Frasnois offers a moderate 18.9 km circular ride. Another option is the Lac de Narlay – Petit Maclu Lake loop from La Fromagerie, a moderate 18.7 km route that explores the lake district.
The best time for touring cycling around Lac d'Ilay, especially for enjoying the scenery and minimizing traffic, is typically during the spring (April-May) and early autumn (September-October). During these periods, the weather is generally pleasant, the natural colors are vibrant, and the routes are less crowded than in the peak summer months. Summer (June-August) is also popular, but you might encounter more visitors, particularly around the main lake areas.
The komoot community highly rates the touring cycling experience around Lac d'Ilay, with an average score of 4.6 out of 5 stars from 188 ratings. Reviewers often praise the serene, car-free environment, the stunning natural beauty of the lakes and forests, and the well-maintained paths that make for a relaxing and immersive ride. The diverse difficulty levels also mean there's something for everyone, from leisurely rides to more challenging ascents.
Absolutely. For experienced touring cyclists seeking a challenge, Lac d'Ilay offers several difficult no-traffic routes with significant elevation gains. The Scenic Forest Descent – Lac de Narlay loop from Le Frasnois is a demanding 32.1 km route with nearly 500 meters of ascent. Another challenging option is the Lac de Chalain – Doucier Beach loop from Le Frasnois, covering 29 km with over 500 meters of climbing, offering rewarding views and varied terrain.
While many routes are designed to be traffic-free, they often pass near or through small villages and towns where you can find cafes, restaurants, or local shops. The region is known for its gastronomy, including Comté cheese and Jura wines, so you'll have opportunities to refuel and experience local flavors. It's always a good idea to check the route details or local maps for specific amenities before you set out.
Many of the no-traffic routes around Lac d'Ilay are suitable for cycling with dogs, especially if they are accustomed to riding in a trailer or basket. The quiet nature of these paths makes for a safer and more enjoyable experience. However, as the area is a protected Natura 2000 and Ramsar site, it's crucial to keep dogs on a leash in sensitive areas and to respect local regulations regarding wildlife and natural habitats. Always ensure your dog has access to water, especially on longer rides.
You'll find various parking options in and around the villages surrounding Lac d'Ilay, such as Le Frasnois or La Fromagerie, which serve as common starting points for many routes. These areas typically have designated parking lots for visitors. Given the focus on no-traffic routes, parking is usually available at the entry points to these cycling paths, allowing for easy access to your ride.
Yes, the region is renowned for its panoramic vistas. Many no-traffic cycling paths offer stunning viewpoints, particularly those that ascend to higher elevations. You can expect breathtaking views of the turquoise lakes, the surrounding cliffs, and the vast Jura forests. The 'Pic de l'Aigle – Three Lakes Viewpoint loop' is a popular hiking trail in the area, and while not a cycling route itself, it indicates the kind of spectacular views accessible in the vicinity of many cycling paths.


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