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United Kingdom
Wales
North Wales
Conwy

Alwen Reservoir

The best cycling routes around Alwen Reservoir

4.5

(14)

371

riders

21

rides

Touring cycling around Alwen Reservoir offers routes through the Hiraethog Forest, characterized by expansive moorlands and conifer plantations. This area features the largest man-made lake in Wales, providing a car-free environment for exploration. Cyclists encounter varied terrain, from surfaced paths to forestry tracks, with views across the reservoir and towards the distant mountains of Eryri National Park. The landscape includes diverse natural features such as the Hafod Elwy Moor National Nature Reserve.

Best touring cycling routes around Alwen Reservoir

  • The…

Last updated: July 8, 2026

4.0

(10)

206

riders

#1.

Two Lakes loop from Llyn Brenig visitor centre

24.1km

02:11

290m

290m

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Moderate

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.

Hard
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Popular around Alwen Reservoir

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A hidden jewel of North Wales — cycling Llyn Brenig

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Tips from the Community

JohnHago
May 18, 2025, Alwen Reservoir and Trail

A good walk or ride. Easily achievable on a cheap MTB or a gravel bike. It's mostly gravel, which makes it a good all-weather route.

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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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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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Explore over 2500 acres of forest, moorland and lakes amid stunning upland scenery. With visitor centre, café, gift shop, osprey exhibition, adventure playground, cycle hire, mountain biking, walking trails, sailing and world class fishing to discover. Perfect cycling conditions for all ages and abilities. Hire from a wide range of bikes or bring your own ride. Enjoy a gentle family ride on an e-bike or an exhilarating mountain bike adventure.

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Stunning scenery some nice roads but watch out for sheep 🐑

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Llyn Brenig is a reservoir located on Denbigh Moors in North Wales. The artificial lake, which was constructed between 1973 and 1976, was created by building an embankment dam across the Afon Brenig valley. It lies at 1,200 ft (370 m) above sea level on the border between the counties of Conwy and Denbighshire. It is used to manage the flow in the River Dee as part of the River Dee regulation system.

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Llyn Brenig is a reservoir located on Denbigh Moors in North Wales. The artificial lake, which was constructed between 1973 and 1976, was created by building an embankment dam across the Afon Brenig valley. It lies at 1,200 ft above sea level on the border between the counties of Conwy and Denbighshire.

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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 touring cycling routes are available around Alwen Reservoir?

There are over 20 touring cycling routes around Alwen Reservoir, offering a variety of experiences. These include 2 easy routes, 9 moderate routes, and 13 difficult routes, catering to different skill levels and preferences.

What kind of terrain can I expect on the touring cycling routes?

The routes around Alwen Reservoir feature varied terrain, from well-surfaced paths to forestry tracks and sometimes rougher ground. You'll cycle through expansive moorlands and conifer forests, with some routes ascending onto Mynydd Hiraethog for panoramic views. While many segments are hard-standing or well-paved, some parts can be challenging, especially for gravel bikes.

Are there any family-friendly touring cycling routes?

Yes, there are easy routes suitable for families. For instance, the Llyn Brenig Dam – Llyn Brenig loop from Llyn Brenig Visitor Centre Cafe is an easy 13.3 km path, perfect for a relaxed family outing. The Alwen Reservoir area generally offers a car-free environment, enhancing safety for younger riders.

What are some notable landmarks or natural features to see while cycling?

Cyclists can enjoy stunning views across the 900-acre Alwen Reservoir and its striking dam, which features an Italian-style valve tower. From higher points, you might even catch glimpses of the mountains of Eryri National Park (Snowdonia). The routes also traverse the Hiraethog Forest and pass through parts of the Hafod Elwy Moor National Nature Reserve, home to rare birds and Red Squirrels.

Are there any circular touring cycling routes around Alwen Reservoir?

Yes, many routes are circular, allowing you to start and end at the same point. A popular option is the Two Lakes loop from Llyn Brenig visitor centre, which is a moderate 24.1 km shared-use trail connecting Alwen Reservoir with Llyn Brenig. Another is the Alwen Reservoir and Trail – Alwen Reservoir Wooden Bridge loop from Llyn Brenig Visitor Centre, a moderate 25.4 km route.

What do other touring cyclists say about the routes in Alwen Reservoir?

The touring cycling routes around Alwen Reservoir are highly rated by the komoot community, with an average score of 4.4 stars from over 10 reviews. Cyclists often praise the tranquil reservoir views, the diverse forest and moorland terrain, and the sense of immersion in nature. Many appreciate the variety of routes available for different fitness levels.

Is there parking available for cyclists?

Yes, parking is generally available. The Llyn Brenig Visitor Centre, located just one mile from Alwen Reservoir's car park, serves as a common starting point and offers facilities. Specific trailheads around the reservoir also provide parking options.

Are there facilities like cafes or toilets nearby?

The Llyn Brenig Visitor Centre, conveniently close to Alwen Reservoir, offers essential facilities including a cafe, toilets, and a gift shop. This is a great spot to refuel or take a break before or after your ride.

Can I rent a bike in the area?

Yes, bike hire is available at the Llyn Brenig Visitor Centre, making it convenient if you don't bring your own touring bicycle or wish to try a different type of bike for the trails.

What is the best time of year to go touring cycling around Alwen Reservoir?

The Alwen Reservoir area is beautiful year-round, but spring and summer offer the most pleasant weather for touring cycling, with longer daylight hours and generally drier conditions. Autumn brings stunning foliage to the Hiraethog Forest. Always check local weather forecasts before heading out, as conditions on the moorlands can change quickly.

Are there any longer, more challenging touring routes for experienced cyclists?

Absolutely. For experienced cyclists seeking a challenge, the Alwen Dam – Cairn Ben Lloyd Singletrack loop from Alwen Dam is a difficult 51.3 km route with significant elevation gain through varied forest and moorland terrain. Another demanding option is the Aled Isaf Reservoir & Llansannan loop from Llyn Brenig, a 48.4 km trail through plantations and open countryside.

Are dogs allowed on the touring cycling trails?

While the region is generally dog-friendly, specific rules may apply to certain trails, especially those passing through nature reserves like Hafod Elwy Moor. It's always best to keep dogs on a lead, particularly around livestock and wildlife, and to check local signage for any restrictions.

Most popular routes around Alwen Reservoir

Gravel biking around Alwen Reservoir

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