4.5
(964)
4,429
hikers
204
hikes
Hiking around Lanmérin provides access to the distinctive landscapes of Brittany's Pink Granite Coast, known for its unique pink granite rock formations. The region features extensive coastal paths, including sections of the historic GR 34, offering views of the sea and rocky coves. Inland, diverse ecosystems include the Lenn Basin with its wildlife and the Forêt de Beffou, which offers forest massifs and river valleys. This varied terrain provides a range of hiking experiences.
Last updated: August 28, 2026
5.0
(2)
18
hikers
4.43km
01:10
30m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.7
(6)
16
hikers
15.6km
04:09
170m
170m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.4
(5)
13
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(4)
12
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
8
hikers
13.0km
03:37
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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A medieval fortress originally built in the 12th century and reconstructed multiple times throughout its turbulent history. The castle was demolished in 1395 by the Duke of Brittany due to its owner's rebellion, then rebuilt in 1406, and partially dismantled again in 1626 on Richelieu's orders after another conspiracy. The fortress features impressive defensive architecture including a barbican, gatehouse with 6-8 meter thick walls, and two major towers - the Tour de Rougé and Tour d'Acigné - both over 20 meters high.
2
0
Great tour with the small lighthouse Phare de Nantouar.
0
0
Great circular tour and the Nantouar lighthouse is always worth a visit.
1
0
This defensive medieval castle, perched on a rocky spur overlooking the Léguer valley, has no less than 11 towers and two dungeons! Built by the lords of Coëtmen Penthièvre and today owned by their descendants, it lived through the most glorious but also the most difficult hours of Breton history. Open from April 1 to November 1, days and times vary depending on the period.
0
0
Very nice route and a little technical but be careful with some difficult sections following deforestation work.
0
0
There are nearly 200 hiking routes around Lanmérin listed on komoot, offering a wide variety of experiences. These range from easy strolls to more challenging moderate routes, catering to different fitness levels.
Yes, Lanmérin offers a good selection of easy trails. Over 100 routes are classified as easy, perfect for beginners or families looking for a relaxed walk. A great option is the Langoat pond loop from Langoat, an easy 2.7-mile (4.4 km) path featuring a gentle loop around the pond.
Hiking around Lanmérin immerses you in the distinctive landscapes of Brittany. You'll encounter the iconic Pink Granite Coast with its dramatic rock formations, extensive coastal paths like sections of the GR 34 offering breathtaking sea views, and diverse inland ecosystems including the wildlife-rich Lenn Basin and the forest massifs of Forêt de Beffou.
Yes, many of the trails around Lanmérin are circular, allowing you to start and end at the same point. An example is the Magnificent views of the bay – Viewpoint loop from Kermaria-Sulard, a moderate 9.7-mile (15.6 km) route offering expansive bay views.
The trails often lead to or pass by fascinating sites. You might encounter historical places like the Place du Martray or the Rocher de la Sentinelle. Natural highlights include the serene Lenn Basin, known for its wildlife, and the beautiful Jardins de Kerdalo, an 18-hectare English-style estate.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 900 reviews. Hikers often praise the stunning coastal scenery, the unique pink granite rock formations, and the variety of trails that cater to different abilities.
Many trails in Brittany are dog-friendly, but it's always best to check local signage or specific route descriptions for any restrictions, especially in nature reserves or protected areas. Always keep your dog under control and clean up after them.
Lanmérin offers great hiking opportunities throughout the year. The Pink Granite Coast is particularly striking in the morning or evening light. Summer brings vibrant flora to areas like the Lenn Basin, while spring and autumn offer pleasant temperatures and fewer crowds. Even winter hikes can be rewarding, with crisp air and dramatic coastal views.
Absolutely. The Tonquédec Castle – Chapel of Saint Thecla loop from Réserve de Vie Sauvage du Trégor is an excellent example. This 8.0-mile (12.9 km) moderate trail leads through both historical sites and natural reserves, offering a blend of cultural and scenic exploration.
Trail durations vary significantly based on length and difficulty. Easy trails like the Langoat pond loop can be completed in about an hour and a half. Longer, moderate routes, such as the Magnificent views of the bay – Viewpoint loop, typically take around 4 hours.
While most routes are easy to moderate, there are options for longer hikes. The region's proximity to the Sentier des Douaniers (GR 34) means you can link sections for extended walks along the coast. For example, the Mountain Bike Trail – Chapel of Saint Thecla loop from Buhulien, though also suitable for hiking, covers nearly 13 km and involves significant elevation changes.


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