Best lakes around Charézier are situated in the Jura department of France, an area known for its natural lakes, forests, and scenic viewpoints. The region offers a diverse landscape characterized by water bodies nestled within verdant surroundings. Charézier serves as a central point for exploring these natural attractions, which include both larger lakes and smaller, more secluded spots. The area provides opportunities for various outdoor activities centered around its aquatic features.
Last updated: May 3, 2026
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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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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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Beautiful view of Lake Chalain (Lac de Chalain)
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It is a natural lake of glacial origin with a wild appearance. This lake will surprise you with its turquoise shores on a clear day and its cliffs in the background. It is otherwise known as Lake Ilay. With an area of 72 hectares and an average depth of ten meters, it is fed mainly by Lake Grand Maclu, to which it is connected by a small natural canal approximately 200 meters long. Possible activities: Hiking (tour of the three lakes/four lakes) and mountain biking (tour of the five lakes), horse riding, holiday activities and entertainment... Swimming is tolerated, under your own responsibility.
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For easy walking, Lake Ilay is a great choice. It's known for its beautiful setting and offers easy walking trails around its perimeter. Lake Bonlieu is also ideal for walking, though swimming is prohibited there.
Yes, several spots are great for families. The Swimming beach on Lake Chalain is equipped and supervised, offering facilities like WCs and places to eat, making it perfect for a family day out. Lake Bonlieu and the Pyle Bridge also offer family-friendly environments and scenic views.
The Chalain Lake Viewpoint offers a wonderful panorama of Lake Chalain and its surrounding forests. Another spectacular spot is the Pyle Bridge, which provides clear, breathtaking views over Lake Vouglans as you cross it.
For supervised swimming, the Swimming beach on Lake Chalain is an excellent option, especially during summer. However, it's important to note that swimming is prohibited at Lake Bonlieu due to strong currents from underground rivers, even for experienced swimmers.
The region around Charézier offers various outdoor activities. You can find numerous running trails, such as the 'Giant's Kettles – View of the Ain at Pont-de-Poitte loop', which are mostly moderate difficulty. For cyclists, there are road cycling routes like the 'Col de Joux — loop from Pont-de-Poitte' and gravel biking options including the 'Lac de Clairvaux-les-Lacs – Pyle Bridge loop'. You can explore more routes on the Running Trails around Charézier, Road Cycling Routes around Charézier, and Gravel biking around Charézier guide pages.
Visitors particularly appreciate the stunning views, such as those from the Chalain Lake Viewpoint and the Pyle Bridge. The natural beauty of lakes like Lake Ilay and Lake Bonlieu, combined with opportunities for easy walks and family-friendly activities like the Swimming beach on Lake Chalain, are frequently highlighted.
While the guide focuses on prominent lakes, the Jura department is known for its many natural lakes, including smaller, more secluded spots beyond the main highlights. Exploring local trails can often lead to discovering these less-frequented, tranquil bodies of water.
The summer months are ideal for enjoying swimming and water-based activities at designated beaches like the Swimming beach on Lake Chalain. Spring and autumn offer pleasant temperatures for walking and hiking around the lakes, with beautiful foliage in the surrounding forests.
The Swimming beach on Lake Chalain is an equipped location where you can find facilities to eat and fill your water bottles, suggesting there are amenities like cafes or snack bars available nearby, especially during peak season.
Lake Ilay is notable for its small island (Île de la Motte) and its depth of up to 32 meters. Lake Bonlieu is recognized for its striking beauty, though its strong underground currents make swimming unsafe. The Pyle Bridge itself is a monumental structure offering unique views over Lake Vouglans.
You'll find a range of hiking experiences. Lake Ilay offers easy walking trails suitable for a leisurely stroll. While some paths around lakes might be wide and lack significant relief, the region provides opportunities for both casual walks and more challenging routes, often with scenic views. For more detailed hiking options, check the Running Trails around Charézier guide, which includes various difficulty levels.


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