4.5
(458)
2,481
hikers
95
hikes
Hiking in Réserve Naturelle Des Étangs De Mépieu offers diverse trails through a unique landscape of wetlands and dry environments. The region, situated on the Isle Crémieu plateau, features a mosaic of ponds, peat bogs, dry grasslands, and oak forests. Trails traverse varied terrain, including stony and earthen paths, with an average altitude of 250 meters. The Grand Étang, a significant wetland, is a prominent natural feature within the reserve.
Last updated: July 11, 2026
4
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
9
hikers
3.24km
00:50
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
4
hikers
7.63km
02:02
80m
80m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
3
hikers
6.75km
01:48
80m
70m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(5)
12
hikers
6.14km
01:44
130m
130m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Popular around Réserve Naturelle Des Étangs De Mépieu
Superb view of the small town of Passins and the Bugey massif
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0
Very nicely situated on a series of ponds. There are round seating areas with space for about 10 people.
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The reserve offers a diverse landscape with trails traversing a mosaic of wetlands and dry environments. You'll encounter stony and earthen paths, moving through areas with ponds, peat bogs, dry grasslands, juniper heaths, and oak forests. The terrain is varied, with some moderate challenges and sustained climbs, particularly as you explore the Isle Crémieu plateau.
Yes, Réserve Naturelle Des Étangs De Mépieu has several easy trails. For instance, the Picnic Shelter by the Pond loop from Arandon-Passins is an easy 3.2 km route. Overall, there are over 30 easy routes available, making it accessible for those new to hiking or looking for a relaxed walk.
Yes, dogs are permitted within the Réserve Naturelle Régionale des Étangs de Mépieu, but it is crucial that they are kept on a leash at all times. This helps protect the diverse wildlife and natural habitats of the reserve.
The reserve features well-marked pedestrian loops, some specifically designed for families. These trails often include educational stations that provide insights into the local ecosystems and emblematic species, making for an engaging experience for all ages.
The reserve is freely accessible year-round. However, late April and May are particularly recommended for observing specific wildlife, such as European pond turtles and various orchid species, as well as enjoying the vibrant spring flora. It's also an important migratory stopover for birds, offering excellent birdwatching opportunities.
For beautiful panoramic views, head to the promontory of Potet, also known as "roche de Sormier." From here, you can enjoy a sweeping perspective of the Grand Étang and the Mépieu church. The departmental road D 16, running along the northern edge of the Grand Étang, also offers scenic viewpoints. The Grand Étang itself, covering 31 hectares, is the largest in Nord-Isère and a significant natural feature.
Yes, many of the trails in the reserve are designed as circular loops, allowing you to start and end at the same point. An example is the Beautiful lake loop from Bouvesse-Quirieu, a moderate 7.6 km route that takes you through varied landscapes.
The diverse habitats of the reserve support a rich array of flora and fauna. You might encounter significant species such as the European pond turtle, the European tree frog, and various protected plant species like fragrant orchids and marsh ferns. It's also an important migratory stopover for birds, making it an excellent spot for nature observation.
There are over 80 hiking routes available in Réserve Naturelle Des Étangs De Mépieu, catering to various difficulty levels. This includes more than 30 easy routes, nearly 50 moderate routes, and a few more challenging options.
The trails in Réserve Naturelle Des Étangs De Mépieu are highly rated by the komoot community, with an average score of 4.5 stars from almost 400 reviews. Hikers often praise the unique juxtaposition of wetlands and dry environments, the rich biodiversity, and the well-marked paths that offer a peaceful escape into nature.
Beyond the diverse natural landscapes, the reserve itself is a major attraction. Keep an eye out for the Grand Étang, the largest pond in Nord-Isère, and the promontory of Potet for its panoramic views. The educational stations along family-friendly loops also highlight specific points of interest related to the local ecosystems.
While specific parking locations are not detailed for every trailhead, the reserve is generally accessible. It is advisable to check local signage or information from the regional tourism office for designated parking areas near popular starting points for trails.


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