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France
Finistère
Morlaix

Lac Du Drennec

The best walks and hikes around Lac Du Drennec

4.3

(823)

4,341

hikers

15

hikes

Hiking trails around Lac Du Drennec offer a diverse landscape within Finistère, Brittany, characterized by tranquil lakeside paths, shaded pine forests, and expansive open moors. This artificial reservoir, set within the Armorique Regional Nature Park, provides a focal point for many routes. Hikers can traverse verdant hills and diverse woodlands, with some trails offering views of the Monts d'Arrée ridge line. The terrain includes easily accessible paths and more challenging routes, catering to various fitness levels.

Best hiking trails around Lac Du Drennec

  • The most popular hiking route is Sizun Beach – Drennec Dam loop from Saint-Cadou, a 4.1 miles (6.5 km) trail that takes 1 hour 41 minutes to complete. This easy route offers continuous views of the lake.
  • Another top favourite among local hikers is Drennec Dam – Sizun Beach loop from Plage de Commana, a moderate 10.6 miles (17.1 km) path. This route explores the lake's perimeter, passing through varied woodlands and open areas.
  • Local hikers also love the Sizun Beach loop from Saint-Cadou, a 2.4 miles (3.9 km) trail leading through lakeside paths, often completed in about 59 minutes.
  • Hiking around Lac Du Drennec is defined by tranquil lakeside paths, shaded pine forests, and expansive open moors. The network offers options for different ability levels, from easy strolls to more demanding hikes.
  • The routes in Lac Du Drennec are highly rated by the komoot community with an average score of 4.3 stars from over 700 reviews. Nearly 4000 hikers have used komoot to explore Lac Du Drennec's varied terrain.

Last updated: May 12, 2026

4.5

(11)

51

hikers

#1.

Lac du Drennec – Point of view!!! loop from Plage de Commana

12.8km

03:37

260m

260m

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

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Moderate

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

Moderate
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3.0

(4)

26

hikers

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

Easy

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

Easy

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

Moderate
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Tips from the Community

Sarah
April 12, 2025, Lac du Drennec

Very beautiful lake with a beautiful beach and nautical base.

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Superb view!!!

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Superb place where a beautiful little river flows

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Mike
August 11, 2023, Lac du Drennec

Plage de Sizum - here is the best beach on the lake.

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Hadrien
October 18, 2022, Lac du Drennec

Superb place for a lunch break or for a night stop! The lake offers water activities and more than pleasant views

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Oliver
August 7, 2022, Plage de Sizun

Great walk, very well marked

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This 110-hectare reservoir is fed by the Élorn and Mougaud rivers. It is important because 400,000 people depend on this lake for their water supply. These are the inhabitants of the city of Brest Métropole, Landerneau and Landivisiau.

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Saint Cadou or Saint Cado is celebrated on September 22nd. This saint is celebrated throughout Brittany with numerous churches, chapels, and places dedicated to him. Notably on Cado Island in Morbihan, where the founder of Llan-Carvan Abbey in Wales is said to have ended his life as a hermit on a tiny island around 577 AD. In any case, this village and this church bear his name.

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Frequently Asked Questions

What kind of terrain can I expect when hiking around Lac Du Drennec?

The trails around Lac Du Drennec offer a diverse landscape, from tranquil lakeside paths to shaded pine forests and expansive open moors. You'll traverse verdant hills and varied woodlands, with some routes providing picturesque views of the Monts d'Arrée ridge line in the distance.

Are there many easy hiking options suitable for beginners or casual walkers?

Yes, Lac Du Drennec is very welcoming for all abilities. Komoot lists 8 easy hiking tours, and the broader network includes over 50 easy options. These paths are generally accessible and perfect for a relaxed stroll, such as the Sizun Beach loop from Saint-Cadou, which is just 3.9 km.

Can I find circular hiking routes around Lac Du Drennec?

Absolutely. Many of the routes around Lac Du Drennec are circular, allowing you to start and end at the same point. For example, the popular Sizun Beach – Drennec Dam loop from Saint-Cadou is a 6.5 km circular trail offering continuous lake views.

What are some longer or more challenging hikes available?

For those seeking a longer adventure, the area offers more demanding routes. The Drennec Dam – Sizun Beach loop from Lac du Drennec is a difficult 19.5 km path, while the Drennec Dam – Sizun Beach loop from Plage de Commana is a moderate 17.1 km route that explores the lake's perimeter through varied woodlands.

What do other hikers enjoy most about the trails at Lac Du Drennec?

The area is highly rated by the komoot community, with an average score of 4.3 stars from over 700 reviews. Hikers often praise the tranquil lakeside paths, the varied scenery, and the well-maintained trails that provide a peaceful natural experience.

Are the hiking trails around Lac Du Drennec suitable for families with children?

Yes, many trails are family-friendly, especially the easier, shorter loops around the lake. The generally gentle terrain and the presence of picnic tables and benches make it a pleasant destination for families to enjoy nature together.

Are dogs allowed on the hiking trails at Lac Du Drennec?

Generally, dogs are welcome on trails in natural areas like Lac Du Drennec, but it's always recommended to keep them on a leash to protect wildlife and ensure a pleasant experience for all hikers. Specific rules might apply in certain protected zones within the Armorique Regional Nature Park.

What natural features or landmarks can I see while hiking here?

Beyond the beautiful lake itself, which is a focal point, you can enjoy shaded pine forests, open moors, and diverse woodlands. The Drennec Dam is a notable structure, and some trails offer distant views of the Monts d'Arrée. Keep an eye out for local wildlife, including otters.

Is there parking available near the trailheads at Lac Du Drennec?

Yes, there are convenient parking areas, particularly near popular starting points like Plage de Commana and Saint-Cadou, which serve as access points for many of the lakeside trails.

Are there any facilities like cafes or picnic spots along the trails?

While specific cafes directly on the trails are limited, the region offers amenities in nearby villages. Importantly, picnic tables and benches are conveniently located along many of the trails, providing ideal spots for breaks and enjoying the scenic surroundings.

What is the best time of year to go hiking at Lac Du Drennec?

Lac Du Drennec offers enjoyable hiking throughout much of the year. Spring and autumn provide pleasant temperatures and beautiful foliage, while summer is ideal for combining hiking with water sports on the lake. Even in winter, the tranquil paths can offer a peaceful experience, though some facilities might be reduced.

How many hiking tours does komoot offer for Lac Du Drennec?

Komoot currently lists 18 curated hiking tours around Lac Du Drennec, ranging in difficulty from easy to difficult, ensuring there's an option for every type of hiker.

Most popular routes around Lac Du Drennec

Easy hikes around Lac Du Drennec

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