4.5
(160)
1,853
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hikes
Hiking around Cefni Reservoir offers urban trails that navigate diverse landscapes on Anglesey. The region is characterized by the reservoir itself, which is the second-largest man-made lake on the island, and extensive woodlands like Cefni Forest. Trails often feature gentle elevation changes, waterside paths, and historical elements such as the disused Anglesey Central Railway. The area is also a designated nature reserve, providing opportunities to observe local wildlife.
Last updated: July 12, 2026
18
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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3
hikers
3.10km
00:48
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Llangefni (meaning "church on the River Cefni", Welsh pronunciation: [ɬaŋˈɡɛvni]) population 5,116, making it the second-largest town in the county and the largest on the island. The community includes the village of Rhosmeirch. Wonderful welsh town with all the shop can get busy in summer holidays.
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The largest town on Anglesey (Holyhead is twice the size but is technically on Holy Island). Now bypassed by the island’s main roads which actually makes it a decent hub if you’re cycling across the south of the island.
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We saw two red squirrels in the area so they are really there!
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Located in Llangefni right out side the nature reserve the dingle
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St Cyngar's Church is a church in the town of Llangefni in Anglesey, Wales. The building dates from 1824. It was designated a Grade II listed building on 8 July 1952.
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Llangefni is the county town of Anglesey and the administrative centre. There is a museum and arts gallery as well as plenty of pubs and cafes. Mona House café on Bulkley Square is recommended.
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The Dingle Local Nature Reserve is a 10 hectare (25 acre) wooded valley rich in wildlife and history. It is bisected by the river Cefni, which comes from the Welsh word "cafn" meaning trough or hollow. The Dingle is a steep sided gorge formed by glacial meltwater during the last ice age hence one of its Welsh names Nant y Dilyw - Valley of the Deluge. Another name for the Dingle is Nant y Pandy - Brook of the Fulling Mill. This refers to the old wool processing plant situated upstream. Much of the reserve is ancient woodland which led to it being known as the Dingle as early as the 1830s. Dingle literally means steep wooded valley.
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This guide highlights 3 easy urban hiking trails around Cefni Reservoir, all of which are suitable for a relaxed stroll.
Yes, all the urban routes in this guide are graded as easy, making them ideal for beginners, families, and those looking for a gentle walk. The terrain generally features gentle elevation changes, ensuring an accessible experience.
Yes, all the urban routes featured in this guide are circular loops. For example, you can enjoy the Llangefni Clock Tower – Red Squirrel Spotting Area loop from Llangefni or the Gaerwen Arms loop from Gaerwen.
While exploring these urban trails, you'll encounter the picturesque Cefni Reservoir and its surrounding woodlands, including parts of Cefni Forest. The area is a designated nature reserve, offering opportunities to spot diverse birdlife and, if you're lucky, red squirrels.
Many paths around Cefni Reservoir are suitable for dogs. However, as parts of the area are designated nature reserves and home to sensitive wildlife like red squirrels, it's always best to keep dogs on a leash, especially near nesting areas or livestock, and to follow local signage.
Along the urban trails, you might encounter the historic tracks of the disused Anglesey Central Railway, which cross the water via an embankment. The Llyn Cefni Dam is also a significant man-made feature within the reservoir landscape.
Car parks are available at the start of many walks around Cefni Reservoir. For instance, routes like the Llangefni Clock Tower – Bulkley Square, Llangefni loop from Llangefni typically start from accessible town locations with parking options.
The area is highly rated by the komoot community, with an average score of 4.7 stars from 149 ratings. Reviewers often praise the peaceful waterside paths, the accessible nature of the trails, and the opportunities for wildlife spotting, particularly the red squirrels.
The urban hikes in this guide vary in length and duration. For example, the Llangefni Clock Tower – Red Squirrel Spotting Area loop is about 2.5 km and takes around 40 minutes, while the Llangefni Clock Tower – Bulkley Square, Llangefni loop is approximately 4.1 km, taking about an hour.
Given the urban focus of these trails, you'll find amenities like cafes and shops in the nearby towns of Llangefni and Gaerwen, which serve as starting points for some of the routes. The Gaerwen Arms loop from Gaerwen, for instance, starts near local establishments.
Cefni Reservoir offers pleasant urban hiking experiences year-round. Spring and autumn provide beautiful foliage and comfortable temperatures, while summer is great for longer daylight hours. Even in winter, the gentle trails are accessible, offering a tranquil escape.


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