4.6
(25)
256
riders
12
rides
Gravel biking around Llyn Alwen, situated within the Denbigh Moors in North Wales, offers a diverse landscape for cyclists. The region is characterized by expansive rolling hills, open moorlands, and conifer forests, with trails traversing varied surfaces from forest doubletrack and wide gravel tracks to singletrack sections. Llyn Alwen and the larger Alwen Reservoir are central features, with routes often following their perimeters. This area provides a mix of bike trails, forest fire roads, and bridleways, suitable for various skill…
Last updated: May 1, 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)
59
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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Popular around Llyn Alwen
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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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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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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There are 12 dedicated no-traffic gravel bike trails around Llyn Alwen, offering a variety of distances and difficulties for different riding preferences.
The Llyn Alwen area offers a diverse range of gravel terrain. You'll encounter forest doubletrack, wide gravel tracks, and some challenging rocky moorland sections. Trails also include undulating singletrack, especially through areas like the Gors Maen Llwyd nature reserve, ensuring a varied and engaging ride.
Yes, there are several easy routes suitable for families. The Alwen cycle trail — Llyn Brenig is a good option, offering a circular route around the reservoir. Another easy choice is the Brenig cycle trail — Llyn Brenig, which is also relatively flat and accessible.
While cycling around Llyn Alwen, you'll experience the expansive beauty of the Denbigh Moors (Mynydd Hiraethog) with sweeping vistas. Keep an eye out for the impressive Alwen Reservoir dam and a distinctive long wooden footbridge on the Alwen cycle trail. The Gors Maen Llwyd nature reserve offers picturesque views and unique singletrack sections. The area is also rich in wildlife, including rare black grouse and red squirrels.
Yes, many of the gravel bike trails in the Llyn Alwen area are circular, allowing you to start and finish at the same point. A popular option is the Alwen cycle trail — Llyn Brenig, which encircles the Alwen Reservoir. For a longer, more challenging loop, consider the Lakes Circular cycle trail — Llyn Brenig.
While specific regulations for dogs on every trail can vary, the Llyn Alwen area, being part of the Denbigh Moors, generally welcomes dogs. However, it's crucial to keep dogs under close control, especially in areas with livestock or ground-nesting birds, and to follow the Countryside Code. Always check local signage for any restrictions on specific paths or nature reserves.
The Llyn Alwen area is highly rated by the komoot community, with an average score of 4.6 stars. Reviewers often praise the tranquility of the no-traffic routes, the stunning panoramic views across the water and moorlands, and the diverse terrain that keeps rides interesting and challenging.
Yes, parking is generally available. The Llyn Brenig Visitor Centre, though slightly removed from Llyn Alwen, is a common starting point for many routes connecting the two lakes and offers ample parking. There are also smaller car parks closer to Llyn Alwen itself, often near the reservoir dam or trailheads.
The Llyn Brenig Visitor Centre, which is easily accessible from many Llyn Alwen routes, provides essential amenities including a cafe and toilets. This makes it a convenient stop for refreshments and facilities during or after your ride.
Spring and autumn generally offer the most pleasant conditions for gravel biking in Llyn Alwen. During these seasons, the weather is often cooler and more stable than in summer, and the landscapes are particularly vibrant. However, trails can be enjoyed year-round, with winter rides offering a different, often more challenging, experience due to potentially wet and muddy conditions.
Absolutely. For experienced riders seeking a challenge, the Llyn Alwen area offers routes with significant elevation gain and technical sections. The Llyn Brenig – Llyn Brenig Dam loop from Alwen Dam is a difficult route spanning nearly 40km with over 600m of ascent. The Two Lakes cycle trail — Llyn Brenig also presents a demanding ride, connecting the two lakes with challenging singletrack sections.


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