4.6
(980)
5,875
hikers
13
hikes
Hiking around Etang Au Duc centers on Lac au Duc, one of Brittany's largest inland lakes, spanning approximately 5.5 km in length. The region features diverse natural habitats, wetlands, and surrounding forest landscapes and moors, characteristic of the broader Brocéliande area. Trails often follow the lake's shoreline, offering varied terrain with minimal elevation changes.
Last updated: May 21, 2026
4.6
(29)
179
hikers
13.5km
03:28
60m
60m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.5
(13)
58
hikers
8.82km
02:19
70m
70m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(9)
36
hikers
12.2km
03:06
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
21
hikers
5.06km
01:19
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
7
hikers
11.3km
02:57
70m
70m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Nice little spot to sit and have a snack peacefully by the water. It's right on the voie verte
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It is one of the largest lakes in Brittany with a length of 5.5 kilometers and a width of between 500 and 900 meters depending on the location. Lake Ploërmel constitutes a habitat of choice for many aquatic and terrestrial species. Otters, frogs, deer, white fish and insects benefit from this space fed by the Yvel. Botany lovers will appreciate the Hydrangea circuit which runs for three kilometers, while running enthusiasts and cyclists take the path which goes around the lake. On the west bank, the water sports center offers a range of sailing or rowing sports, just a stone's throw from the beach.
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This lake, one of the main bodies of fresh water in Brittany, was developed by monks in the 12th century. The flora and fauna are rich.
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perfect stopover for hikers at the campsite with swimming in the lake.
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Etang Au Duc offers a diverse network of trails, primarily easy to moderate, suitable for various fitness levels. You'll find everything from short, easy strolls with lake views to longer circuits that encompass the entire lake. Many trails follow the shoreline, offering continuous scenic views, while others venture into the surrounding wetlands and forest landscapes characteristic of the broader Brocéliande region. In total, there are over 100 hiking routes to explore.
Yes, Etang Au Duc has several easy and short options perfect for families or those new to hiking. For instance, the Picnic area with lake view – Lake au Duc loop from Ploërmel is an easy 3.1 km (1.9 miles) trail that can be completed in under an hour, offering excellent lake views. These shorter routes provide a great way to experience the area's beauty without a significant time commitment.
The most prominent feature is Lac au Duc itself, one of Brittany's largest inland lakes, offering picturesque backdrops. A unique attraction is the Hydrangea Walk, a 3 km circuit showcasing 5,300 hydrangea plants of various species, providing a changing palette of colors from spring to autumn. Sections of the GR®37 long-distance path also run alongside the lake, offering magnificent views, and you might spot local wildlife like otters or deer in the diverse wetlands.
Yes, circular routes are a highlight of hiking around Etang Au Duc. Many trails are designed as loops, allowing you to experience varied scenery without retracing your steps. A popular moderate option is the Lake au Duc – Duke's Lake loop from Taupont, which is 13.6 km (8.5 miles) and provides continuous scenic views through varied habitats. There's also a more challenging 14-15 km path that circles the entire lake, offering a longer stroll with minimal elevation changes.
Hiking trails around Etang Au Duc are generally characterized by minimal elevation changes, making them accessible to a wide range of hikers. For example, the GR 37 Along Lac au Duc – Lake au Duc loop from Loyat, a 14.8 km (9.2 miles) moderate route, has an elevation gain of only about 83 meters. This makes the area ideal for those seeking scenic walks without strenuous climbs.
While specific regulations can vary, many trails around Etang Au Duc are generally dog-friendly. It's always recommended to keep your dog on a leash, especially in areas with wildlife or near other visitors, and to clean up after them. The open nature of many paths around the lake makes them pleasant for walks with canine companions.
The hiking experience around Etang Au Duc is highly regarded by the komoot community, with an average rating of 4.6 stars from over 800 reviews. Hikers often praise the continuous scenic views of the lake, the well-maintained paths, and the diverse natural habitats. Many appreciate the accessibility of the trails for various fitness levels and the overall peaceful atmosphere.
Absolutely. Etang Au Duc is a hub for various outdoor activities. Beyond hiking, you can enjoy golf, a wide array of boating options including windsurfing, sailing, canoeing, and kayaking, as well as fishing (it's recognized as one of France's best sites for long pole fishing). Water skiing, wakeboarding, and stand-up paddleboarding are also popular, and there are designated areas for children's games and picnics.
Etang Au Duc offers pleasant hiking experiences throughout much of the year. Spring and autumn are particularly beautiful, with the Hydrangea Walk showcasing vibrant colors. The minimal elevation changes make trails accessible even in cooler months. Summer is also popular, though it can be busier with other water activities. Always check local weather conditions before heading out.
Yes, sections of the GR®37, a renowned long-distance path, run alongside Lac au Duc. This offers hikers the chance to experience magnificent views of the lake as part of a larger trekking adventure. For example, the GR 37 Along Lac au Duc – Lake au Duc loop from Loyat incorporates a portion of this famous route.
Etang Au Duc is situated within the broader Brocéliande region, known for its mythical forests and rich natural tapestry. For more general information about the area, including its history and other attractions, you can visit the official Brittany Tourism website: brittanytourism.com.


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