5.0
(2)
9
hikers
3
hikes
Mountaineering around Bonlieu offers routes through the rugged topography of the Jura Mountains, characterized by limestone cliffs, dense forests, and glacial landscapes. The region features varied terrain shaped by ancient glaciers, including dramatic rock formations and numerous lakes. These natural features provide a compelling setting for challenging outdoor pursuits.
Last updated: May 9, 2026
5
hikers
12.0km
03:42
350m
350m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(1)
2
hikers
8.37km
02:36
210m
210m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5.0
(1)
2
hikers
9.89km
03:07
270m
270m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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A superb hike with beautiful views of the seven waterfalls. It's quite crowded, so for a quieter return, you can take the GR 559 forest path back, which doesn't follow the water but is also magnificent in autumn!
0
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A waterfall with a larger pool and a smaller cascade in a beautiful setting. In front of it is a small stone lynx statue.
6
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Waterfall at the ruins of a former mill.
7
0
Larger waterfall Cascade Saut De La Forge with grotto and views directly onto the waterfall, as well as from above onto the water cascading down over smaller cascades.
7
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Beautiful view near a crossroads of a small waterfall with cascades.
7
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A beautifully situated small waterfall with a small pool. From the rocks in front of the waterfall, you can enjoy beautiful views of the idyllic natural setting.
7
0
View of the Cascade de L'Eventail. A small, rocky path leads directly to the waterfall.
7
0
Beautiful view of the central waterfall Cascade Du Hérisson with several cascades.
7
0
Mountaineering in Bonlieu takes you through the rugged topography of the Jura Mountains. You'll encounter varied terrain shaped by ancient glaciers, including dramatic limestone cliffs, dense forests, and numerous glacial lakes. The routes often feature challenging ascents and descents, characteristic of the region's unique geology.
The routes around Bonlieu offer options for different ability levels. While there are no easy routes listed, you can find moderate ascents, such as the Fan Waterfall – Le Grand Saut loop from La Chaux-du-Dombief, as well as more challenging routes like the Le Grand Saut – Saut de la Forge loop from Bonlieu, which is rated as difficult.
Yes, the routes in Bonlieu are rich with natural beauty. You can explore stunning waterfalls like Le Grand Saut, Fan Waterfall, and Saut Girard Waterfall. The area also boasts impressive viewpoints, such as Pic de l'Aigle and the Three Lakes Viewpoint, offering panoramic vistas of the glacial landscape.
The Jura Mountains, where Bonlieu is located, offer varied conditions throughout the year. While specific mountaineering routes might require snowshoes, skis, crampons, or ice axes in winter, the warmer months from late spring to early autumn generally provide the most accessible conditions for hiking and climbing on the limestone cliffs. Always check local weather and trail conditions before heading out.
Yes, several mountaineering routes in Bonlieu are designed as loops. For example, the Fan Waterfall – Le Grand Saut loop from La Chaux-du-Dombief and the Le Grand Saut – Saut de la Forge loop from Bonlieu are popular circular options that allow you to start and end at the same point.
Bonlieu is a highly protected natural site, and while many trails in the broader Jura region are dog-friendly, specific rules may apply, especially in sensitive areas or nature reserves. It's always best to check local signage or official park regulations regarding dogs, particularly around Bonlieu Lake, which is a protected natural lake.
Parking is generally available near popular trailheads. For routes like the Fan Waterfall – Le Grand Saut loop, you might find parking options in villages like La Chaux-du-Dombief. For routes starting directly from Bonlieu, look for designated parking areas within the village or near key attractions. It's advisable to arrive early, especially during peak season.
While Bonlieu is nestled in a natural area, public transport options might be limited compared to larger towns. It's recommended to check local bus schedules or regional transport services for connections to Bonlieu or nearby villages that serve as starting points for routes. Driving often offers the most flexibility for accessing various trailheads.
The mountaineering routes in Bonlieu are highly rated by the komoot community, with an average score of 5.0 stars. Reviewers often praise the dramatic glacial landscapes, the pristine natural environment, and the diverse climbing opportunities offered by the limestone cliffs. The sense of wilderness and solitude is also frequently highlighted.
While the listed mountaineering routes include moderate and difficult options, the broader region around Bonlieu offers a range of outdoor activities. For families, it's recommended to look for shorter, less strenuous hikes or walks around the lakes, which provide beautiful scenery without the technical demands of full mountaineering. Always assess the difficulty and duration of a route to ensure it's suitable for all family members.
Bonlieu Lake is a highly protected natural lake, offering a wilderness experience. While the surrounding terrain provides excellent opportunities for walking and hiking, swimming is generally prohibited in the lake, and motorboats are restricted to anglers without engines. The area is known for its dramatic cliffs and dense forests, which contribute to the challenging and scenic nature of the routes.
Yes, the region's limestone cliffs provide opportunities for rock climbing. While specific mountaineering routes might involve scrambling or technical sections, the broader Jura Mountains are known for numerous limestone climbing sites. Climbing and hang-gliding are explicitly permitted during certain periods around Bonlieu Lake, indicating suitable rock formations for such activities.


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