5.0
(6)
259
riders
12
rides
Road cycling routes around Alwen Plantation traverse a landscape characterized by coniferous and mixed woodlands, open moorland, and significant reservoirs. The region features the Alwen Reservoir and Llyn Brenig, offering routes that combine paved surfaces with scenic views. Elevation changes provide panoramic vistas across the moorlands. The area's terrain includes both dedicated cycle trails and extensive road networks.
Last updated: July 8, 2026
4
riders
36.4km
01:55
520m
520m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
7
riders
36.2km
01:57
660m
660m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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21
riders
76.3km
04:18
1,440m
1,440m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
14
riders
70.5km
03:56
1,240m
1,240m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
4
riders
35.1km
01:47
500m
500m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around Alwen Plantation
A lovely market town with pubs and shops and bakeries. Hilly routes into town but a number of good places for a stop mid ride.
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Great decent but coming the other way is a little tough.
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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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The castle passed between various owners in the first half of the 14th century, before coming under the control of the Mortimer family. Meanwhile, the walled town had proved impractical to live in, and a newer, much larger, settlement developed outside the defences. In 1400, the walled town was raided during the Glyndŵr Rising, although the castle itself remained secure throughout the rebellion. During the Wars of the Roses, Denbigh was attacked by Lancastrian forces; the walled town was attacked and burnt. In the aftermath, the old town was largely abandoned by its inhabitants, the walled area becoming an extension of the castle's defences.
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Denbigh Castle and town walls (/ˈdɛnbi/ DEN-bee; Welsh: Castell Dinbych a waliau tref [ˌkastɛɬ ˈdɪnbɨχ]) were built to control the lordship of Denbigh after the Conquest of Wales by Edward I of England in 1282. The lands were granted to Henry de Lacy, Earl of Lincoln, who began to build a new walled town, colonised by immigrants from England, protected by a substantial castle and surrounded by deer parks for hunting. The work had not been completed by 1294, when the Welsh temporarily seized the castle during the Madog ap Llywelyn revolt. The defences continued to be improved, although the castle was not completely finished by the time of Henry's death in 1311.
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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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very nice campsite and pub. Also very willing to let you park there for a bike ride. Campsite is £10 per tent and 2 people. very friendly landlord.
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There are over 10 road cycling routes available around Alwen Plantation, catering to various skill levels. The komoot community has explored these routes more than 250 times, highlighting the area's popularity for road cycling.
The region around Alwen Plantation is enjoyable for road cycling throughout much of the year. Spring and autumn offer pleasant temperatures and vibrant scenery, while summer provides longer daylight hours. Winter cycling is possible, but be prepared for potentially colder and wetter conditions, especially on the exposed moorlands.
While many routes in the area are moderate to difficult, the broader region offers some dedicated cycle trails that can be suitable for families or those seeking an easier ride. The Alwen Cycle Trail, for instance, is a 7-mile circular route around Alwen Reservoir, primarily following surfaced paths and forestry tracks. However, some sections might be rougher, so a gravel or mountain bike might be more comfortable for some parts of these dedicated trails. For purely paved, easier road cycling, look for routes specifically marked as 'moderate' that stick to well-maintained roads.
Yes, experienced riders will find challenging routes with significant elevation gains. For example, the Llyn Brenig Visitor Centre – Denbigh Castle and Town Walls loop from Llyn Brenig Visitor Centre is a difficult 62.0 km route with over 1000 meters of ascent. Another demanding option is the Moel Arthur Climb – Denbigh Castle and Town Walls loop from Cerrigydrudion, which covers 76.3 km and features over 1400 meters of climbing.
Yes, there are several circular road cycling routes that explore the stunning reservoir landscapes. The Llyn Brenig Visitor Centre – Llyn Brenig loop from Gorsedd Bran is a moderate 36.4 km route offering continuous views of Llyn Brenig. Another popular option is the Llyn Brenig Visitor Centre – Llyn Brenig loop from Brenig Reservoir, a 36.2 km trail that leads through open moorland and alongside Llyn Brenig.
Road cycling routes in Alwen Plantation offer stunning views of coniferous and mixed woodlands, open moorland, and the prominent Alwen Reservoir and Llyn Brenig. You can also encounter impressive engineering, such as the grand, ornate stone dam of the Alwen Dam. The area is also known for its biodiversity, including red squirrel conservation efforts and peatland bog areas.
The elevation changes throughout the Alwen Plantation area provide numerous panoramic viewpoints across the moorlands. On clear days, you might even catch distant glimpses of Eryri National Park (Snowdonia). The The Road to Hell Climb from Denbigh via Peniel is specifically noted as a viewpoint, offering expansive vistas.
Yes, parking is available, particularly at the Llyn Brenig Visitor Centre, which serves as a convenient base for exploring the area. This visitor centre offers amenities and is a common starting point for many routes.
The Llyn Brenig Visitor Centre is a key facility in the area, offering amenities such as toilets and a cafe. This makes it an ideal stop for refreshments before, during, or after your ride. For more information on the visitor centre, you can visit Visit Mid Wales.
The road cycling routes in Alwen Plantation are highly rated by the komoot community, with an average score of 5.0 stars from over 5 reviews. Cyclists often praise the combination of scenic views, the varied terrain through woodlands and open moorland, and the well-paved surfaces on many of the routes. The presence of the reservoirs, Alwen and Llyn Brenig, is also a frequently highlighted feature.
The terrain around Alwen Plantation is diverse, featuring a mix of coniferous and mixed woodlands, open moorland, and picturesque stretches along the Alwen Reservoir and Llyn Brenig. While many routes offer mostly well-paved surfaces, some segments, particularly on shared-use trails, may include rougher ground or forestry tracks. Riders should be aware of elevation changes that provide stunning panoramic views.
Yes, some routes extend beyond the immediate reservoir area to connect with historical sites. For instance, the Llyn Brenig Visitor Centre – Denbigh Castle and Town Walls loop from Llyn Brenig Visitor Centre links the natural beauty of the reservoir with the historical town of Denbigh, allowing cyclists to explore its castle and town walls.
Route durations vary significantly based on distance and difficulty. For example, a moderate loop like the Llyn Brenig Visitor Centre – Llyn Brenig loop from Cerrigydrudion (35.1 km) can take around 1 hour 47 minutes. More challenging routes, such as the Moel Arthur Climb – Denbigh Castle and Town Walls loop from Cerrigydrudion (76.3 km), can take over 4 hours to complete.


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