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France
Auvergne Rhône Alpes
Nantua

Lac de Coiselet

The best walks and hikes around Lac de Coiselet

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.

Best hiking trails in Lac de Coiselet

  • The most popular hiking route is Molard de Netru and the heights of Chancia — loop in the Haut-Jura Regional Natural Park, a 7.6 miles (12.2 km) trail that takes 3 hours 55 minutes to complete. This moderate route explores the elevated areas within the Haut-Jura Regional Natural Park.
  • Another top favourite among local hikers is Oliferne Castle Ruins – Oliferne Peak loop from Condes, a moderate 5.5 miles (8.8 km) path. This trail leads to the ruins of an 18th-century castle and offers panoramic views from Pic d'Oliferne.
  • Local hikers also love the Plage de Chancia loop from Condes, a 2.4 miles (3.9 km) trail leading through varied terrain to the golden beaches of Chancia, often completed in about 1 hour 16 minutes.
  • Hiking around Lac de Coiselet is defined by impressive cliffs, lush forests, and the expansive lake itself. The network offers options for different ability levels, from easy lakeside strolls to moderate climbs.
  • The routes in Lac de Coiselet are highly rated by the komoot community with an average score of 4.4 stars from over 390 reviews. More than 2200 hikers have used komoot to explore Lac de Coiselet's varied terrain.

Last updated: June 25, 2026

4.4

(12)

35

hikers

#1.

Molard de Netru and the heights of Chancia — loop in the Haut-Jura Regional Natural Park

12.2km

03:55

510m

510m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

3.8

(36)

128

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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3.9

(25)

96

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.

Hard

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.

Easy
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Tips from the Community

Oscar Krauth
October 10, 2025, Château d'Oliferne Ruins

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.

Translated by Google

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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.

Translated by Google

1

0

At 807 meters above sea level, this peak offers breathtaking views of lakes and tree-covered mountains.

Translated by Google

3

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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.

Translated by Google

2

0

A small summit that offers a magnificent view of Lake Coiselet!

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2

0

Paul_C
April 3, 2023, Pic d‘Oliferne

At 807m above sea level, this peak offers breathtaking views of lakes and tree-covered mountains.

Translated by Google

2

0

Frequently Asked Questions

How many hiking trails are available around Lac de Coiselet?

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.

Are there easy hiking trails suitable for families or beginners?

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.

Can I find challenging hikes around Lac de Coiselet?

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.

Are dogs allowed on the hiking trails around Lac de Coiselet?

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.

What natural features or landmarks can I expect to see while hiking?

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.

Is there parking available at the trailheads?

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.

What is the best time of year to go hiking in Lac de Coiselet?

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.

Are there options for public transport to reach the hiking areas?

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.

What do other hikers say about the trails around Lac de Coiselet?

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.

Are there any beaches or swimming spots accessible from the trails?

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.

Can I combine hiking with other activities in the 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.

Are there any historical sites to discover while hiking?

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.

Where can I find accommodation or places to eat near the hiking trails?

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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