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Alwen Trail

About Alwen Trail

The Alwen Trail was formally opened on the 21st July 2006 creating new access for walkers and cyclists to enjoy the Denbigh Moor. The trail was a joint venture between the Forestry Commissions and it’s partners. This new easy-to-follow, waymarked, circular route around the Alwen Reservoir is approximately 7.5 miles (11 Km) You will follow forestry tracks and paths along the water’s edge and upto the moorland of Mynydd Hiraethog. The scenery around the reservoir is wonderfully varied with a beautiful section along the waters edge, from the position high on the moorlands there are stunning landscape views. Along the way you will encounter 6 illustrated panels, providing information of the wildlife, culture and folk tales associated with the area, including the story of ‘Freckled Fairy Cow’. Many reminders from the past are scattered along the trail; for the nature lovers there are rare species of Birds, Insects and the elusive Red Squirrels. Links have also been created to the established, nearby Brenig Trail, providing 20 miles of continuous walking and cycling for all abilities, particularly suitable for families.

How to get there:

Alwen Trail can be started from Alwen Dam in Alwen which is part of Hiraethog Forest. Cerrigydrudion is the nearest town or village.

Follow the A5 to Cerrigydrudion and then take the B4501 north from there to the Alwen Reservoir Forestry Commission Wales car park on the left shortly after the Pont yr Alwen junction. Alternatively take the B4501 from Denbigh. The turning is on the right after the visitor centre.

OS Grid Reference: SH955530
For details of public transport visit

Family on a cycling trail round the Alwen reservoir

Alwen Dam Facilities.
Grade of trail:
Trail waymarking:
Length of trail:
7.5 miles
Approximate time of trail:
walk 3 hrs cycling 2 hrs
Open or closed:
Click here to find out what else you can do in this forest.


Mike Whitley
Local Area Manager
0300 065 3000

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Warning - Trails can become slippery due to adverse weather conditions. Please take extra care when in the forest. Suitable footwear should be worn at all times.

Please check before you visit that the area you want to come to is not closed, due to work in progress or an event taking place, by logging on to the CCW Website for current and future closures as determined by the CRoW 2000 Act.

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