Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Routes
Hikes
France
Bourgogne-Franche-Comté
Saint-Claude

Lac D'Ilay

The best walks and hikes around Lac D'Ilay

4.4

(3885)

30,083

hikers

223

hikes

Hiking around Lac D'Ilay offers access to a diverse landscape within the Jura Mountains of France. The region is characterized by glacial lakes, imposing cliffs, and extensive forests, forming part of the larger "4 Lakes" area. Trails navigate through varied terrain, including delicate peat bogs and along the shores of the turquoise Lac d'Ilay. This protected natural area provides a network of paths suitable for different hiking abilities.

Best hiking trails around Lac D'Ilay

  • The most popular hiking route is…

Last updated: May 12, 2026

4.8

(57)

281

hikers

#1.

Pic de l'Aigle – Three Lakes Viewpoint loop from La Chaux-du-Dombief

14.6km

04:17

320m

320m

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

Navigate with device

Send to Phone

Save

Moderate

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

Easy
guide_signup
Let us show you the way with the komoot mobile app
With a free komoot account, you can easily find, customize, and navigate endless outdoor adventures.

Sign up for free

Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.

Moderate

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

Moderate

Hard hike. Great for any fitness level. Sure-footedness, sturdy shoes and alpine experience required.

Hard
Sign up for free to see 219 more hikes around Lac D'Ilay.

Get access to more routes and recommendations from other explorers.

Sign up for free

Already have an account?

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Start today with a free account

Your next adventure awaits.

Login or Signup

Popular around Lac D'Ilay

Running Trails around Lac D'Ilay

MTB Trails around Lac D'Ilay

Road Cycling Routes around Lac D'Ilay

Cycling around Lac D'Ilay

Gravel biking around Lac D'Ilay

Mountain Hikes around Lac D'Ilay

Tips from the Community

Thierry Martin-Braud
March 8, 2026, Lac de Narlay

🌿 Lake Narlay: Essential Information Location: Frasnois municipality, in the Lakes Region (Jura). Altitude: 748 m. Surface area: 41 ha. Depth: Up to 40 m, making it the deepest lake in the Jura. Origin: Glacial lake, likely formed by a rockfall. Environment: Meadows, forests, peat bogs, Natura 2000 and Ramsar sites. (Copilot)

Translated by Google

0

0

Kristian
September 1, 2025, Wanderweg

Beautiful hiking trail connecting La Fromagerie and Lac d'Ilay.

Translated by Google

2

0

Kristian
September 1, 2025, Petit Lac Maclu

The smaller of the two Maclu Lakes, with an easy hiking trail along its shore.

Translated by Google

5

0

Kristian
September 1, 2025, Lac du Grand Maclu

A gravel, easy-to-walk hiking trail runs along the lakeshore, offering repeated, beautiful views of Lac Le Grand Maclu.

Translated by Google

5

0

Kristian
September 1, 2025, Lac du Grand Maclu

Small, rocky stretch of beach that you can climb down to, as well as good views of Lac Le Grand Maclu.

Translated by Google

5

0

Kristian
September 1, 2025, Coin du grand Maclu

Water access with beautiful views of Lac Le Grand Maclu.

Translated by Google

4

0

Beautiful view through a clearing onto Lac Le Grand Maclu.

Translated by Google

5

0

Small, privately owned botanical garden that can be visited by appointment.

Translated by Google

5

0

Frequently Asked Questions

How many hiking trails are there around Lac d'Ilay?

The Lac d'Ilay region offers a wide variety of hiking opportunities, with over 220 routes available. These trails cater to all skill levels, from easy lakeside strolls to more challenging routes with significant elevation gain.

Are there any easy, family-friendly hikes around Lac d'Ilay?

Yes, the area is well-suited for families and those seeking easier walks. An excellent option is the Grand Maclu Lake – Little Maclu Lake loop from La Chaux-du-Dombief, an easy 4.5-mile (7.2 km) path that circles two of the region's glacial lakes, offering accessible lakeside scenery. Another gentle choice is the The fountain – Lake Ilay loop from Le Frasnois, a 3.5-mile (5.7 km) trail.

What are the best viewpoints or natural landmarks to see while hiking near Lac d'Ilay?

The region is rich in stunning natural features. The Four Lakes Panoramic Viewpoint offers a breathtaking 360° panorama of the Jura Mountains, and on clear days, you might even glimpse Mont Blanc. Pic de l'Aigle (Eagle Peak) also provides magnificent views of Lac d'Ilay and the Hérisson Valley. Additionally, the impressive Hérisson Waterfalls, fed by Lac d'Ilay, are a must-see, with various paths leading to their cascades.

Are there circular hiking routes available around Lac d'Ilay?

Many of the trails in the Lac d'Ilay area are designed as loops, allowing you to start and end at the same point. A popular moderate circular route is the Pic de l'Aigle – Three Lakes Viewpoint loop from La Chaux-du-Dombief, which is 7.3 miles (11.8 km) long. For an easier option, consider the Grand Maclu Lake – Little Maclu Lake loop from Le Frasnois.

What do other hikers enjoy most about hiking in Lac d'Ilay?

The area is highly rated by the komoot community, with an average score of 4.5 stars from over 4000 reviews. Hikers frequently praise the stunning glacial lakes, the dramatic cliffs, and the dense forests. The diverse terrain and the beauty of the Hérisson Waterfalls are also often highlighted as favorite aspects of the region.

Is the Lac d'Ilay area suitable for dog-friendly walks?

Yes, the natural environment around Lac d'Ilay is generally welcoming for dogs, provided they are kept under control, especially in protected areas and near wildlife. Many trails offer open spaces and varied terrain for you and your canine companion to enjoy. Always check local signage for specific restrictions, particularly around sensitive natural habitats like peat bogs.

What is the best time of year to go hiking around Lac d'Ilay?

The region is beautiful throughout the year, but the best time for hiking is typically from spring to autumn. During these seasons, the weather is generally mild, and the natural landscape is vibrant. Spring brings lush greenery and blooming flora, while autumn offers stunning fall colors. Summer is also popular, though trails can be busier. Winter hiking is possible but requires appropriate gear for snow and ice.

Are there any unique natural features or wildlife to look out for?

The Lac d'Ilay area is a protected natural site, classified as Natura 2000 and Ramsar, known for its rich biodiversity. You can find unique flora in the fragile peat bogs, including carnivorous plants. The diverse forests and habitats support various wildlife, such as aurochs near Lac d'Ilay, and even lynxes and wolves in the broader forest areas. Staying on marked paths helps protect this delicate ecosystem.

What kind of terrain and difficulty can I expect on the trails?

The trails around Lac d'Ilay offer a mix of terrain. You'll find relatively flat paths around the lakes, suitable for easy walks, as well as more challenging routes with significant elevation changes, especially when heading towards viewpoints like Pic de l'Aigle. The region features glacial lakes, imposing cliffs, and extensive forests, with some paths traversing delicate peat bogs. There are 62 easy, 104 moderate, and 60 difficult routes available.

Is there parking available near the hiking trailheads?

Yes, parking facilities are generally available at common starting points for hikes around Lac d'Ilay, such as near La Chaux-du-Dombief and Le Frasnois. It's advisable to arrive early during peak season to secure a spot, especially for popular trailheads leading to major attractions like the Four Lakes Viewpoint or Pic de l'Aigle.

Can I combine hiking with other activities in the Lac d'Ilay region?

Absolutely. The region offers more than just hiking. The lakes are popular for water activities, and a comprehensive 11 km trail circles the four lakes, which is suitable for both walking and cycling. The area's natural beauty also makes it ideal for photography and wildlife observation. You can also explore the charming local villages and enjoy regional cuisine.

Most popular routes around Lac D'Ilay

Family-friendly hikes around Lac D'Ilay

Store rating

Get inspired with the komoot mobile app

With a free komoot account, you can easily find, customize, and navigate endless outdoor adventures.

or

Join komoot Now

Store rating

Explore more

Browse the best Hikes in other regions.

Les RoussesLac Le Grand MacluLac du Grand MacluLa Chaux-Du-DombiefLa PesseCharchillaPrémanonBonlieuLectSaugeotLac de VouglansDenezièresMaisodSeptmoncelSaint-PierreVillard-Saint-SauveurBois-D'AmontCoyrièreSaint-Maurice-CrillatLamouraCrenansLeschèresMoirans-En-MontagneLa ChaumusseMartignaCoiseretteLes PiardsLac des RoussesLac de BonlieuBellefontaineLes CrozetsVulvozJeurreMorbierLe Grand Lac (Ou Etival)ÉtivalChouxRognaViryFort-Du-PlasneHauts-De-BiennePratzVillard-Sur-BienneChâtel-De-JouxLac de BellefontaineLarrivoireLavans-Lès-Saint-ClaudeLes MoussièresAvignon-Lès-Saint-ClaudeLongchaumoisMeussiaLes MolunesLac d'AntreMolingesLa RixouseLajouxLes BouchouxVaux-Lès-Saint-ClaudeNanchezCoyronMontcuselChassalBellecombeCutturaGrande-RivièreVillards-D'HériaLavancia-EpercyLac-Des-Rouges-TruitesRavillolesLac de l'AbbayeChâteau-Des-PrésSaint-LupicinSaint-Laurent-En-Grandvaux

Nearby adventure guides

Things to Do around Lac Le Grand Maclu

background

Get ready to conquer new peaks

Sign up for Free

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy