4.6
(25)
264
riders
12
rides
Gravel biking around Llyn Alwen offers routes through varied terrain in North Wales, centered around the Alwen Reservoir. The landscape features conifer forests, open moorland, and shoreline paths, providing diverse riding experiences. Trails often incorporate the impressive Alwen Dam and connect to the larger Llyn Brenig complex. The area provides a mix of paved and gravel surfaces, with some sections including rougher ground.
Last updated: May 21, 2026
7
riders
10.5km
01:03
130m
140m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
28
riders
41.6km
02:54
660m
660m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(7)
90
riders
23.9km
02:19
300m
300m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
5.0
(4)
62
riders
15.2km
01:22
130m
130m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
1
riders
15.3km
01:30
150m
150m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
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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!!
1
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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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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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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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Here you have a super good section of singletrack as you meander your way through Gors Maen Llwyd nature reserve to the north of Llyn Brenig. You have fine views but don't let it distract you too much as walkers use this track as well.
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A long wooden bridge spans the upper reaches of the Alwen Reservoir, which features on the Two Lakes and Alwen circular cycle routes. It's absolutely covered in lichen and feels a little rickety as you ride along. Enjoy the remote lake views as you ride over this long, narrow bridge.
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The Llyn Alwen area offers a diverse selection of over 10 gravel bike trails, catering to various skill levels. These routes explore the reservoir, surrounding forests, and moorland.
Yes, there are several easier options. For instance, the Alwen cycle trail — Llyn Brenig is a 6.5-mile (10.5 km) route offering sheltered gravel paths through trees along the reservoir shore, which is a good choice for those seeking a less strenuous ride. There are 4 easy routes in total.
For experienced riders, the area features 5 difficult routes. The Llyn Brenig – Llyn Brenig Dam loop from Alwen Dam is a challenging 24.8-mile (39.9 km) trail that leads through the Llyn Brenig area, requiring good fitness. Another demanding option is the Two Lakes cycle trail — Llyn Brenig, a 14.9-mile (23.9 km) path with a mix of paved and more technical gravel sections.
You'll encounter a varied landscape featuring conifer forests, open moorland, and stunning shoreline paths along the reservoir. Many routes offer panoramic views across the water and surrounding countryside, including the impressive Alwen Dam and a notable wooden footbridge spanning the head of the reservoir.
Yes, the area is rich in history. The grand, ornate stone Alwen Dam, completed in 1920, is a magnificent feat of engineering often marking the start or end of trails. The region also has archaeological significance, with Bronze Age artifacts and Mesolithic hunter-gatherer camps discovered nearby, and you can find relics like ring cairns and barrows on archaeological trails.
The diverse habitats around Llyn Alwen support a variety of wildlife. Keep an eye out for rare black grouse, large heath butterflies, and red squirrels, which can sometimes be spotted along the shoreline paths.
The Llyn Alwen area is beautiful year-round, but spring and autumn often offer pleasant temperatures and vibrant scenery. Summer provides longer daylight hours, while winter can bring more challenging conditions on some of the rougher sections.
While Llyn Alwen itself doesn't have a dedicated visitor center, it is well-connected to Llyn Brenig, which offers a visitor center with a café, gift shop, and bike hire. This makes it a convenient base for exploring both areas and grabbing refreshments.
Parking is generally available at key access points around the reservoir, particularly near the Alwen Dam, which serves as a common starting point for many trails. Specific parking details can often be found on individual route descriptions.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 20 reviews. Riders frequently praise the varied terrain, from sheltered forest paths to open moorland, and the stunning views across the reservoir and surrounding North Wales landscape.
Generally, no specific permits are required for cycling on the designated public trails around Llyn Alwen. However, it's always good practice to check local signage and respect any private land notices. For more information on the area, you can visit Visit Mid Wales.
Public transport options directly to Llyn Alwen are limited. It is generally more accessible by car, with parking available at various points. For detailed travel planning, it's advisable to check local bus services to nearby towns like Cerrigydrudion or Llanfihangel Glyn Myfyr and plan onward travel from there.


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