Best lakes around Clairvaux-Les-Lacs are found in a region of France characterized by its natural beauty and diverse aquatic landscapes. The area features two primary lakes within Clairvaux-Les-Lacs, the Grand Lac and the Petit Lac, and serves as a gateway to the wider "Four Lakes" region. These lakes offer a range of experiences, from family-friendly swimming to tranquil nature observation and hiking opportunities. The region's geological history, shaped by glaciers, contributes to its distinct natural environment.
Last updated: May 3, 2026
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Popular around Clairvaux-Les-Lacs
Swim and hike – grand Tour of France's Jura lakes in the Western Alps
Road Cycling Routes around Clairvaux-Les-Lacs
Hiking around Clairvaux-Les-Lacs
Cycling around Clairvaux-Les-Lacs
MTB Trails around Clairvaux-Les-Lacs
Running Trails around Clairvaux-Les-Lacs

Gravel biking around Clairvaux-Les-Lacs
Mountain Hikes around Clairvaux-Les-Lacs
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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The monks of Saint-Claude are credited with establishing a monastery in the 6th century to the southwest of the Abbey Lake on the island known as sur la Motte. Then, probably having fallen into disuse for several centuries, a second monastery succeeded it in the 12th century (1172) built to the northeast of the lake on the current site of the hamlet of l'Abbaye by the canons of the Abbey of Abondance (Augustinians of Haute-Savoie). The status of abbey, served by a particular abbot, remained for a century, until the monastery was the subject of an exchange of goods between the abbot of Abondance and that of Saint-Claude. Once again dependent on the Abbey of Saint-Claude, the Abbey of Grandvaux regained the status of priory. From the fortified buildings of the 12th century, which were accessed by a drawbridge, there remains today an old farm building (called La Joséphine after the former owner of the place), a presbytery and a church, dedicated to Notre-Dame de la Nativité, like that of Abondance. The site has been listed since September 15, 1966. A site to discover through a stroll in 4 scenes, evoking the history of the site.
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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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Lake L'Abbaye in the Jura Mountains is surrounded by hills and forests. Its clear waters reflect the landscape, offering a peaceful setting for boating, fishing, and hiking. Unfortunately, swimming is not permitted.
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Very nice view of the lake
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The Grand Lac de Clairvaux is highly recommended for swimming and family fun. It features a sandy beach with gently sloping shores, ideal for children, and its waters are known for their high quality, earning it a 'Blue Flag' certification. In summer, the water can reach around 25°C. You can also enjoy water sports like pedal boating, paddleboarding, and canoeing, and there's a multi-level diving platform. The beach is easily accessible with nearby parking and facilities for people with reduced mobility.
Yes, the banks of the Grand Lac de Clairvaux are an archaeological treasure. Evidence of prehistoric stilt houses dating back between 5000 and 500 BC has been found here, and the site was recognized by UNESCO in 2011 as one of the prehistoric pile-dwelling sites around the Alps. Additionally, near Abbey Lake, you can find the Church of Our Lady of the Nativity of the Abbey and Abbey Site of Grandvaux, which has a rich monastic history dating back to the 6th century.
The wider 'Four Lakes' region, which includes Lac du Grand Maclu and Lac du Petit Maclu, is a paradise for hikers and nature lovers. Numerous trails, such as the 'Tour des 4 lacs' (Four Lakes tour), allow you to explore stunning landscapes and panoramic viewpoints. The Pic de l'Aigle offers magnificent views over the lakes and surrounding valleys. While some hikes can be challenging, there are also easier paths suitable for all fitness levels, including those around Lac du Grand Maclu and Lac du Petit Maclu.
Absolutely. The Petit Lac de Clairvaux offers a more tranquil, natural setting adjacent to the Grand Lac. Similarly, the Lac du Grand Maclu and Lac du Petit Maclu within the 'Four Lakes' region are part of a Natura 2000 protected area, offering a pristine environment for nature observation. These lakes are surrounded by diverse vegetation, providing a rich habitat for various animal species, particularly dragonflies and Eurasian coots. Swimming is generally prohibited in these lakes to preserve their fragile ecosystems, ensuring a quiet, contemplative experience.
Yes, swimming is generally prohibited in several lakes to preserve their natural state and ecosystems. This includes the Petit Lac de Clairvaux, Lac du Grand Maclu, Lac du Petit Maclu, and Abbey Lake. Additionally, swimming is not recommended in Lake Bonlieu due to strong underground currents, despite its beauty.
Beyond hiking, the area around Clairvaux-les-Lacs offers a variety of outdoor activities. You can explore numerous mountain biking trails, with options ranging from easy to difficult, such as the 'Between the 2 lakes – SCIE Viewpoint loop' or the 'View of Lac de Coiselet – LakeSide loop'. Road cycling routes are also popular, including scenic rides like the 'Lac de Clairvaux-les-Lacs – Chalain Lake Viewpoint loop'. For runners, there are several jogging trails, such as the 'Grand Lac de Clairvaux – LakeSide loop'. You can find more details on these activities in our guides for MTB Trails, Road Cycling Routes, and Running Trails around Clairvaux-les-Lacs.
For breathtaking panoramic views, head to the Pic de l'Aigle, which offers magnificent vistas over the 'Four Lakes' region and surrounding valleys, including the Hérisson Valley. Another excellent spot is the Chalain Lake Viewpoint, which provides an expansive perspective of Lake Chalain and its surrounding forests.
The 'Four Lakes' region, encompassing Lac du Grand Maclu, Lac du Petit Maclu, Lac d'Ilay, and Lac de Narlay, is celebrated for its exceptional natural beauty and rich biodiversity. These lakes are situated in a depression formed by glaciers and are part of a Natura 2000 protected area. Their waters can exhibit stunning turquoise and emerald hues in fine weather, making them highly photogenic. It's an ideal area for hiking and nature exploration, offering a peaceful escape.
Yes, the village of Clairvaux-les-Lacs, located near the Grand Lac, offers various amenities including campsites, shops, restaurants, and other services, making it a convenient base for your visit. For specific locations, you might find options directly in the village or along the main routes connecting the lakes.
The summer months, particularly July and August, are ideal for visiting if you plan to swim, as the Grand Lac de Clairvaux warms up significantly (around 25°C). For hiking and nature observation, spring and autumn offer pleasant temperatures and beautiful scenery, with vibrant foliage in autumn. The varying colors of the water and unspoiled natural surroundings make the lakes highly photogenic year-round.
Yes, Lake Ilay is known for its scenic location and offers opportunities for pleasant walks around its perimeter. It is part of the 'Four Lakes' region, providing a beautiful natural setting for a stroll.


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