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United Kingdom
Wales
North Wales
Conwy

Llyn Alwen

The best walks and hikes around Llyn Alwen

4.4

(148)

567

hikers

10

hikes

Hiking around Llyn Alwen offers diverse landscapes in North Wales, characterized by a mix of forests, rivers, meadows, and rolling hills. The central feature is the Llyn Alwen reservoir, a 900-acre lake with a perimeter of about 3.1 miles (5 km). The terrain transitions between densely forested sections and open areas providing clear views of the water. The region also features the Alwen Dam, a notable point of interest.

Best hiking trails around Llyn Alwen

  • The most popular hiking route…

Last updated: April 27, 2026

5.0

(1)

17

hikers

#1.

Alwen Dam – Alwen Reservoir loop from Alwen Dam

8.18km

02:12

100m

100m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

5.0

(2)

5

hikers

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Popular around Llyn Alwen

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Tips from the Community

Stewart
October 3, 2024, Flowing Lakeside Singletrack

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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Kentishbob
August 5, 2024, Llyn Brenig

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 ride for all abilities

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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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Frequently Asked Questions

How many hiking trails are available around Llyn Alwen?

There are over 10 hiking routes available around Llyn Alwen, catering to various preferences. These include 4 easy trails and 7 moderate options, ensuring there's something for every hiker.

What kind of terrain can I expect on the Llyn Alwen trails?

The terrain around Llyn Alwen is diverse, featuring picturesque woodlands—some described as mystical, very green, and mossy—alongside rivers, meadows, and rolling hills. You'll experience transitions between densely forested sections and open spaces with clear views of the reservoir.

Are there any easy or beginner-friendly hikes in Llyn Alwen?

Yes, Llyn Alwen offers several easy routes perfect for beginners or those seeking a relaxed stroll. An example is the Alwen Dam – View of Llyn Brenig loop from Alwen Dam, which is approximately 5.0 km (3.1 miles) long and can be completed in about 1 hour 21 minutes.

Are there circular walks around Llyn Alwen?

Many of the trails around Llyn Alwen are circular, allowing you to explore the diverse scenery without retracing your steps. A popular option is the Alwen Dam – Alwen Reservoir loop from Alwen Dam, a moderate 8.2 km (5.1 miles) path that encircles parts of the reservoir.

What notable landmarks or features can I see along the trails?

As you hike, you can observe the impressive Alwen Dam, which stands 27 meters high. The reservoir itself, a 900-acre lake, is a central feature, offering expansive water views. Historically, the area also holds significance, with Bronze Age artifacts like a ring cairn and an ancient burial mound discovered during the reservoir's construction.

Is Llyn Alwen suitable for family hikes?

Yes, Llyn Alwen is a great destination for family hikes, especially with its selection of easy and moderate trails. The varied landscapes, from forests to open views of the lake, provide an engaging experience for all ages. Consider shorter, easy loops for younger children.

Are dogs allowed on the hiking trails around Llyn Alwen?

Llyn Alwen is generally dog-friendly, offering plenty of open spaces and trails for you and your canine companion to enjoy. However, it's always recommended to keep dogs on a lead, especially near livestock or wildlife, and to follow local signage regarding pet regulations.

What is the best time of year to visit Llyn Alwen for hiking?

Llyn Alwen offers beautiful hiking experiences throughout the year. Spring brings lush greenery and blooming flora, while autumn showcases vibrant fall colors in the diverse forests. Summer provides longer daylight hours, and even winter can be picturesque, though conditions may be colder and paths potentially muddier.

Where can I park when visiting Llyn Alwen for a hike?

Parking is available at various points around Llyn Alwen, often near the Alwen Dam or other trailheads. These designated parking areas provide convenient access to the hiking routes.

Are there any cafes or pubs near the Llyn Alwen hiking trails?

While Llyn Alwen itself offers a tranquil, natural experience, there are amenities in nearby villages and towns. For cafes, pubs, or accommodation, you would typically need to venture a short distance from the immediate reservoir area.

What do other hikers enjoy most about Llyn Alwen?

The Llyn Alwen area is highly rated by the komoot community, with an average score of 4.5 stars from over 180 reviews. Hikers frequently praise the peaceful atmosphere, the diverse and ever-changing scenery, and the well-maintained paths that offer clear views of the reservoir and surrounding nature.

Are there any challenging hikes around Llyn Alwen?

While Llyn Alwen doesn't feature 'difficult' graded trails, some of its moderate routes offer a good challenge due to their length and elevation changes. For instance, the Alwen Reservoir Bridge – Alwen Dam loop from Alwen Dam is 14.2 km (8.8 miles) long and takes nearly 4 hours to complete, providing a substantial workout.

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