Best lakes around Cogna are found in the Jura department of France, offering a diverse natural landscape characterized by lakes and forests. This region provides opportunities for outdoor activities amidst its varied terrain. The area features several natural monuments and viewpoints, making it suitable for those seeking scenic experiences. Visitors can explore a network of trails and discover the unique geological formations of the Jura.
Last updated: June 24, 2026
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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.
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Lac d'Ilay, also called Lac de la Motte, is a lake in the Jura department of France, about 14 km south of Champagnole in Franche-Comté. It lies at an altitude of 774 m in the municipalities of Le Frasnois and La Chaux-du-Dombief and covers an area of approximately 0.7 km². The lake is 1.9 km long, has a maximum width of 400 m, and has a small island (Île de la Motte). Its greatest depth is 32 m.
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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 path to walk in the shade, very welcome in case of strong heat.
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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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Very nice on the way back along the south of the lake
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The tour of the lakes is not of much interest, mainly being wide paths, without much relief, and with no view worthy of the name, including on the lakes (which we see very little, except on the eastern part, which is a shame). The western part is even difficult (we follow the road for 2km...). In short, a walk to forget, except perhaps for a running outing, or a detour via the Eagle peak.
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The Cogna region, located in the Jura department of France, offers several beautiful lakes. Among the most popular are Chalain Lake Viewpoint, which provides a wide perspective of Lake Chalain, and Lake Ilay, one of the larger lakes in the Jura. Visitors also enjoy Grand Maclu Lake, known for its small, rocky beach.
Yes, several lakes around Cogna are considered family-friendly. Lake Ilay is suitable for an easy walk around its perimeter, making it great for families. Lake Bonlieu is also noted as family-friendly, offering beautiful scenery for walks, though swimming is prohibited there. The Pyle Bridge, spanning Lake Vouglans, offers safe pedestrian access and spectacular views for all ages.
While many lakes are beautiful for viewing and walking, swimming regulations vary. For example, swimming is prohibited in Lake Bonlieu due to strong currents from underground rivers. Always check local signage or official sources for current swimming rules at each specific lake.
The lakes around Cogna offer diverse and impressive views. From the Chalain Lake Viewpoint, you can see Lake Chalain and its surrounding forests from above. Grand Maclu Lake provides good views, especially from its small beach. The Pyle Bridge over Lake Vouglans offers a clear, spectacular panorama of the lake and its surroundings.
Yes, there are several easy walking opportunities. Lake Ilay is known for an easy walk around its perimeter. The area around Grand Maclu Lake also features nice and easy walks. Many trails are wide paths, suitable for leisurely strolls.
Beyond walking, the region around Cogna's lakes is excellent for various outdoor activities. You can find numerous cycling routes, including road cycling, mountain biking, and touring bicycle options. For example, there are routes like the "View of Lac de Vouglans – Vouglans Dam loop" for road cycling, or the "Between the 2 lakes – SCIE Viewpoint loop" for mountain biking. You can explore more options on the Road Cycling Routes around Cogna, MTB Trails around Cogna, and Cycling around Cogna guide pages.
Yes, Lake Ilay is designated as a natural monument. It is one of the larger lakes in the Jura, situated at an altitude of 774 meters, and features a small island called Île de la Motte. Grand Maclu Lake is also recognized as a natural monument.
Yes, Grand Maclu Lake features a small, rocky stretch of beach that visitors can access. This spot offers good views and a place to relax by the water.
The Pyle Bridge is a monumental structure, 385 meters long and 65 meters high, spanning Lake Vouglans. It connects the towns of Maisod and Orgelet and is equipped with two sidewalks, allowing pedestrians to cross safely. It offers a spectacular panorama over the lake, making it a popular viewpoint.
The lakes around Cogna are generally best visited during the warmer months, from spring to autumn, when the weather is pleasant for outdoor activities like walking, cycling, and enjoying the viewpoints. During these seasons, the natural landscapes are vibrant, and access to trails and viewpoints is typically optimal.
Visitors frequently praise the beautiful scenery and the opportunities for easy walks. The clear views from spots like the Chalain Lake Viewpoint and the Pyle Bridge are highly appreciated. The natural beauty and the peaceful atmosphere of lakes like Lake Bonlieu also receive positive feedback, despite swimming restrictions.
Absolutely. The Chalain Lake Viewpoint is specifically designed to offer a wonderful, wide perspective of Lake Chalain and its surrounding forests. Additionally, the Pyle Bridge provides a spectacular, clear panorama over Lake Vouglans, making it an excellent spot for expansive views.


Still not found your perfect lake around Cogna? Check out the guides of these regions to see even more beautiful places.