4.3
(450)
2,494
hikers
125
hikes
Hiking around Lac de Coiselet offers diverse terrain characterized by dramatic cliffs, dense forests, and the confluence of the Bienne and Ain rivers. This man-made lake, formed by the Coiselet Dam, is situated between the Ain and Jura regions, providing a landscape shaped by ancient geological history and rich biodiversity. The area features prominent landmarks like Pic d'Oliferne and offers varied elevations suitable for different hiking experiences.
Last updated: June 25, 2026
4.4
(12)
35
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3.8
(36)
128
hikers
3.87km
01:16
160m
160m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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3.9
(25)
96
hikers
3.50km
01:09
150m
150m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.8
(5)
22
hikers
18.7km
05:47
550m
550m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.
4.5
(4)
10
hikers
3.15km
01:05
150m
150m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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You think of a castle but only stones - but still a fantastic view
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You think castle but only stones - But fantastic view
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In addition to its view of Lake Coiselet, the Oliferne peak is distinguished by a strange sculpture which stands in the middle of the ruins, like a guardian watching over a castle.
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From the ruins of Oliferne Castle, perched on a rocky spur in the Jura Mountains, you can enjoy breathtaking views of the Ain Valley and beyond. Once a medieval fortress, its ruined walls and towers now blend into the rugged landscape. Its strategic position allowed it to control access to the region, making it a must-see when hiking the Pic d'Oliferne.
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At 807 meters above sea level, this peak offers breathtaking views of lakes and tree-covered mountains.
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So many things to see from here! A beautiful view of Lake Coiselet and the Bienne valley. From here, you can also see the village of Chancia and the peak of Oliferne.
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A small summit that offers a magnificent view of Lake Coiselet!
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At 807m above sea level, this peak offers breathtaking views of lakes and tree-covered mountains.
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There are over 120 hiking trails around Lac de Coiselet, offering a wide range of options for different skill levels and preferences. The area is known for its diverse terrain, including dramatic cliffs and dense forests.
Yes, Lac de Coiselet offers many easy trails. You'll find over 40 easy routes, perfect for families or those looking for a relaxed stroll. An example is the Plage de Chancia loop from Condes, a 2.4-mile trail leading to the golden beaches of Chancia.
For more experienced hikers, there are 15 difficult trails available. These routes often feature significant elevation changes and cover longer distances, providing a rewarding challenge amidst the region's impressive landscapes.
Generally, dogs are welcome on trails around Lac de Coiselet, but it's always best to keep them on a leash, especially in areas with wildlife or near livestock. Please respect local signage and ensure your dog doesn't disturb other hikers or the natural environment.
While hiking around Lac de Coiselet, you'll encounter dramatic cliffs, lush forests, and the expansive lake formed by the confluence of the Bienne and Ain rivers. A prominent landmark is Pic d'Oliferne, which offers panoramic views and the ruins of an 18th-century castle. You can explore this on the Oliferne Castle Ruins – Oliferne Peak loop from Condes.
Yes, parking is generally available at various points around Lac de Coiselet, particularly near popular trailheads and villages like Condes or Chancia. It's advisable to check specific route details for the most convenient parking options for your chosen hike.
The best time for hiking around Lac de Coiselet is typically from spring through autumn. During these seasons, the weather is milder, and the natural beauty of the forests and lake is at its peak. Summer offers opportunities for swimming, while autumn brings vibrant foliage.
Public transport options directly to all trailheads around Lac de Coiselet can be limited. It's often more convenient to reach the area by car. However, local bus services might connect larger towns in the Ain and Jura regions, from which you could potentially access some parts of the lake.
The trails around Lac de Coiselet are highly rated by the komoot community, with an average score of 4.4 stars from over 390 reviews. Hikers often praise the stunning panoramic views, the diverse landscapes, and the well-maintained paths that cater to various skill levels.
Yes, the golden sandy beaches of Chancia are a notable feature of Lac de Coiselet, offering a tranquil spot for relaxation and unsupervised swimming. The Plage de Chancia loop from Chancia provides direct access to this area.
Absolutely. Beyond hiking, Lac de Coiselet is ideal for swimming, fishing, and canoeing. The broader Jura Mountains region also offers extensive opportunities for cycling, mountain biking, horseback riding, and caving, making it a versatile destination for outdoor enthusiasts.
Yes, the region has historical significance. The ruins of an 18th-century castle perched on Pic d'Oliferne are a significant draw. Additionally, nearby Coisia village made history with the discovery of 140-million-year-old dinosaur footprints, visible from the roadside, adding a unique historical dimension to your visit.
You'll find various accommodation options, including gîtes and campsites, in the villages surrounding Lac de Coiselet. Restaurants and cafes are also available in these local communities, offering places to refuel after your hikes.


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