4.6
(573)
6,033
hikers
210
hikes
Hikes around Llanddyfnan explore a landscape of reservoirs, forests, and internationally important wetlands in the center of Anglesey. The terrain is generally flat, with many local walking routes following paths around Llyn Cefni and through the adjacent Cefni Forest. This network of trails provides accessible options for exploring the area's unique natural features, including its notable fen habitats.
Last updated: May 11, 2026
4.6
(17)
195
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.6
(14)
180
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.8
(13)
151
hikers
7.88km
02:03
50m
50m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
32
hikers
3.16km
00:49
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
20
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Great loop around the reservoir, all kinds of gravel.
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We visited for the Parkrun, which was cancelled whilst a walkway is fixed (some more weeks, I would expect). You can still access the lake along the disused railway line for part of the way - but not a good surface for running. Then there is a path around the lake with views across the lake and stretches through the woods, lovely, if rather muddy in places following wet weather. In total about 9 km around. Hope to do this again in the Spring with the promise of wild daffodils and perhaps a red squirrel.
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Quiet paths easy cycling crosses deserted railway line still present, which there trying to reopen
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Cefni Forest on Anglesey surrounds Llyn Cefni reservoir near Llangefni. It offers peaceful woodland trails for walking and cycling, linking to the Lon Las Cefni route. The forest is a sanctuary for red squirrels and diverse birdlife, making it a perfect spot for quiet nature exploration and wildlife watching.
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Llyn Cefni Dam During World War II, a water scheme was devised for the town of Llangefni in central Anglesey. It involved water from a local source being pumped to two settling tanks in the Dingle part of the town. From here the water was pumped across the river to a reservoir and water tower, on the site of the present Pennant Estate. These arrangements became redundant with the building of the Cefni Reservoir, which was completed in 1951, but the settling tanks and pumping station survive in Llangefni to this day. The new scheme was designed to supply most of the water needs for the people of Anglesey for the foreseeable future
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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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The hiking landscape around Llanddyfnan is defined by its gentle terrain, featuring tranquil reservoirs, quiet forests, and unique wetland fens. Many trails follow paths around Llyn Cefni and through the adjacent Cefni Forest, offering serene waterside views. The area is also notable for the internationally important wetlands of Cors Bodeilio and Cors Erddreiniog, which you can explore via boardwalks.
Yes, the area is very family-friendly. Many routes are flat and well-maintained, making them ideal for walkers of all ages. For a short and engaging walk, consider the Cefni Forest – Llyn Cefni Reservoir and Dam loop from Llangwyllog. It's less than 2 miles long and takes you through pleasant woodland paths.
Absolutely. The majority of the trails around Llanddyfnan are rated as easy, with over 130 easy routes to choose from. These trails typically have minimal elevation gain and follow clear paths, such as those around the Llyn Cefni reservoir. A great example is the Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Bodffordd, which is a gentle walk of about 3 miles.
Yes, circular walks are very common around Llanddyfnan, allowing you to start and end in the same place without retracing your steps. Most of the popular routes around Llyn Cefni are loops. For a slightly longer circular route, the 6.3-mile Llyn Cefni Reservoir and Dam loop from Isle of Anglesey offers a comprehensive tour of the reservoir.
Dogs are generally welcome on the public footpaths around Llanddyfnan. However, you will be walking through farmland with livestock and sensitive nature reserves. It is essential to keep your dog on a lead and under close control at all times, especially in areas like Cors Bodeilio and around Llyn Cefni to protect wildlife and farm animals.
The area is a haven for wildlife. Cefni Forest is one of Anglesey's best spots for seeing red squirrels. The wetland nature reserves of Cors Bodeilio and Cors Erddreiniog are home to rare plants like the fly orchid and carnivorous sundew, as well as a rich variety of birdlife, dragonflies, and the threatened marsh fritillary butterfly.
For a more challenging walk with rewarding views, a hike up Mynydd Bodafon is highly recommended. As the highest point on Anglesey, its summit offers stunning panoramic vistas across the island towards Snowdonia on a clear day. The walk involves a steady climb and a short scramble over rocks to reach the trig point.
There is a wide variety of options, with over 200 designated hiking routes to explore in the area. These range from short, easy strolls to more moderate and challenging full-day hikes, ensuring there's a trail for every fitness level and interest.
The trails around Llanddyfnan are highly regarded by the komoot community. Hikers often praise the tranquility of the reservoir paths, the well-maintained forest trails, and the unique experience of walking through the fen nature reserves. The accessibility of the routes for different abilities is also a frequently mentioned highlight.
While Llanddyfnan is centrally located, it is not directly on the coast. However, it serves as an excellent base for reaching coastal areas. You can plan routes that head towards the sea, for example, by hiking from the Llanddyfnan area towards Moelfre or Pentraeth to connect with sections of the popular Isle of Anglesey Coastal Path.
For hikes around Llyn Cefni and Cefni Forest, there are several dedicated car parks. The main car park for the reservoir is located off the B5111 road, providing direct access to the main trails and the dam. It's a popular starting point for many of the circular routes in the area.


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