4.7
(18)
154
hikers
23
hikes
Hiking around Llyn Brenig features routes that navigate the landscape surrounding the reservoir, situated on the Denbigh Moors. The area is characterized by a mix of forest tracks, open moorland, and shoreline paths around both Llyn Brenig and the nearby Alwen Reservoir. Trails are generally well-maintained, with some routes incorporating sections of archaeological interest from the Bronze Age.
Last updated: April 25, 2026
4.0
(4)
18
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
2
hikers
6.53km
01:46
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
17
hikers
8.18km
02:12
100m
100m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
4
hikers
13.1km
03:36
220m
220m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
9
hikers
4.97km
01:22
80m
80m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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You can head back to llyn brenig before you get to the section as a short cut, this but is not to be missed. Flows really nice, cutting through some old forest before a fun section along the lake.
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Though it was not a tough or technical ride, it did take me into territory I had never visited before and was a lovely antidote to the 'fleshpots' of Gwydir Forest or Coed-y-Brenin. Some lovely gentle singletrack, beautiful views and I didn't see another rider for the whole trip - although tbh I did set off at 08.30 on a Wednesday!!
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Alwen Reservoir is the largest human-made lake in Wales and it makes for a lovely walk. There's a car park at its eastern end and the 6-mile (10 km) loop of the reservoir is wonderfully scenic and suitable for the whole family. The mixture of lake views, woodland and open moorland make it a real treat.
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This bridge across the 900-acre (364 ha) Alwen Reservoir enables a beautiful and tranquil loop of the Wales' largest artificial lake. The views across the water and to the surrounding woodland and hills are lovely.
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The grand, ornate stone dam of Alwen Reservoir couldn't be more of a contrast to the neighbouring Llyn Brenig Dam. It's well worth taking a minute or two to take in this magnificent feat of engineering, that was completed in 1920. The reservoir here was built to provide drinking water for Liverpool and the Wirral.
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An easy route for all abilities
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An easy route for all the family to enjoy, although you might want to go int he warmer months of the year. It can be very wet and windy up here in the Winter.
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Yes, the area offers several family-friendly options. The trails are generally well-maintained, making them accessible for younger walkers. For a shorter, manageable walk with impressive views, consider the 2.5-mile (4 km) Dam Walking Trail. The main Llyn Brenig Visitor Centre also has an adventure playground, making it a great starting or ending point for a family day out.
Dogs are welcome on the trails around Llyn Brenig, but they must be kept on a lead at all times. This is to protect livestock grazing in the area and the diverse local wildlife, which includes ground-nesting birds. Please be sure to clean up after your dog to keep the trails enjoyable for everyone.
Llyn Brenig offers a great hiking experience year-round, but each season has its own charm. Spring and summer are fantastic for birdwatching, especially for spotting the nesting ospreys. Autumn brings beautiful colours to the surrounding forests, while crisp winter days can offer stunning, clear views across the moors. Always check the weather before you go, as conditions on the Denbigh Moors can change quickly.
Yes, circular routes are a key feature of hiking here. Many trails are designed as loops around the reservoirs or through the forests. For a substantial but rewarding loop, the Alwen Reservoir Bridge – Alwen Dam loop from Alwen Dam is a popular 8.8-mile (14.2 km) moderate hike that provides great views over the water and surrounding moorland.
The terrain is varied, featuring a mix of well-maintained shoreline paths, forest tracks, and open moorland. Most routes are on good surfaces, but some sections, especially on the higher moorland, can be uneven and exposed to the elements. Waterproof hiking shoes with good grip are recommended.
The Llyn Brenig Visitor Centre has a highly-regarded café that offers meals and refreshments with excellent views over the lake. It's the perfect spot to relax after your hike. The centre is the main hub for the area and a convenient starting point for many walks.
The main car park is located at the Llyn Brenig Visitor Centre. It's a large, pay-and-display car park that serves as the primary access point for most of the trails, including the Brenig Trail and routes heading towards the Alwen Reservoir. There are also smaller parking areas, such as near the Alwen Dam, for specific routes.
While many trails are moderate, there are options for those seeking a challenge. The most difficult route is the Alwen Reservoir Bridge – Alwen Dam loop from Rhydlydan, a 15-mile (24 km) trek with over 330 meters of elevation gain. You can also combine the Brenig and Alwen trails for a longer, more demanding day of hiking.
The area is rich in history, with evidence of human activity dating back to the Mesolithic era. Several archaeological trails guide you to visible relics from the Bronze Age. A key point of interest is a Bronze Age burial mound, known as a ring cairn, which was discovered during the reservoir's construction.
The trails are very popular with the komoot community, which has given the area an average rating of 4.7 out of 5 stars. Hikers frequently praise the well-marked paths, the stunning reservoir views, and the peaceful atmosphere of the forests and moorland.
Yes, there are several easier options. For a pleasant walk through the forest, the Alwen Dam – Alwen Reservoir loop from Rhydlydan is a 4.6-mile (7.4 km) route that takes about 2 hours and is relatively flat. The area around the visitor centre also offers shorter, gentle paths perfect for a casual stroll.
Llyn Brenig is a haven for wildlife. It's particularly famous for the ospreys that nest here each year, and you can learn more about them at the visitor centre's exhibition. You might also spot sand martins, red squirrels, and even elusive pine martens in the surrounding 2,500 acres of forest and moorland.


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