4.4
(154)
592
hikers
9
hikes
Family friendly hiking trails around Llyn Alwen offer diverse landscapes, transitioning from tranquil waterside paths to expansive moorland and dense conifer forests. The region is characterized by the large Alwen Reservoir, its historic dam, and views towards the mountains of Eryri National Park. Hikers can explore a mix of high heath, moorland, and woodland habitats, providing varied terrain for outdoor activities.
Last updated: June 29, 2026
5.0
(1)
17
hikers
8.22km
02:12
100m
100m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
5
hikers
13.1km
03:36
220m
220m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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3
hikers
4.31km
01:11
70m
70m
Easy hike. Great for any fitness level. 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.
4.0
(4)
18
hikers
Moderate hike. Good fitness required. 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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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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Llyn Brenig is located at the heart of the Mynydd Hiraethog and is a good base for outdoor activities, including walking, cycling, fishing and sailing. It is a great spot for a break off the bike and the area is surrounded by a network of footpaths and a number of way marked trails suitable for biking and walking, including the Brenig Trail. The Visitor Centre provides toilet facilities and a cafe.
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There are nine family-friendly hiking trails around Llyn Alwen, offering a mix of easy and moderate options. Four of these routes are considered easy, while five are moderate, ensuring there's something suitable for various family activity levels.
The trails around Llyn Alwen offer diverse terrain, transitioning from tranquil waterside paths along the reservoir's edge to expansive moorland and dense conifer forests. You'll find well-maintained paths, some gravel sections, and natural surfaces, providing varied scenery and engaging walks for families.
Yes, there are several easy options. For a shorter, accessible walk, consider the Alwen Dam – View of Llyn Brenig loop from Alwen Dam, which is just under 5 km (3 miles) and offers gentle gradients. While some paths are suitable for prams, always check specific trail conditions as some sections might be uneven.
Hikers can enjoy views across the reservoir and towards the mountains of Eryri National Park (Snowdonia). The impressive Alwen Dam is a historic engineering feat and a great starting point. The trails also pass through the Hiraethog Forest and offer glimpses of the Hafod Elwy Moor National Nature Reserve, known for its moorland and bog habitats. Look out for illustrated panels along the main Alwen Trail, which share local wildlife and folk tales.
Absolutely! Many of the trails are circular, making them ideal for families. A popular option is the Alwen Dam loop from Alwen Dam, which is about 6.5 km (4 miles) long and offers a pleasant circuit around the reservoir's surroundings.
Yes, Llyn Alwen is generally dog-friendly. Many trails welcome dogs, but it's important to keep them under control, especially in areas with livestock or ground-nesting birds, and to clean up after them. Always check local signage for any specific restrictions.
Parking is typically available near the Alwen Dam, which serves as a common starting point for many of the trails. This area provides convenient access to the various routes around the reservoir.
Llyn Alwen is rich in wildlife. Keep an eye out for rare bird species such as red and black grouse, and skylarks in spring, especially in the Hafod Elwy Moor National Nature Reserve. You might also spot red squirrels and the large heath butterfly along the shoreline.
While Llyn Alwen itself is more remote, the nearby Llyn Brenig visitor center, which is linked to Alwen by trails like the 'Two Lakes Trail', offers facilities including a cafe and toilets. It's advisable to plan accordingly for refreshments and facilities when hiking directly around Llyn Alwen.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the tranquil waterside paths, the diverse scenery of moorland and forest, and the well-maintained trails that make for enjoyable family outings.
For families seeking a longer adventure, the Alwen Dam – Alwen Reservoir loop from Alwen Dam is a moderate 8 km (5 miles) route. Another option is the Alwen Reservoir Bridge – Alwen Dam loop from Alwen Dam, which is about 14 km (8.7 miles) and offers more extensive exploration of the reservoir's surroundings.
Spring and summer are generally ideal for family hiking around Llyn Alwen, offering pleasant weather for exploring the diverse landscapes and spotting wildlife. Autumn also provides beautiful scenery with changing foliage. Always check the local weather forecast before your visit, as conditions can change rapidly in moorland areas.


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