Llyn Brenig Twin Reservoir Tour to Llyn Brenig and Alwen Reservoirs

Llyn Brenig Twin Reservoir Tour – Llyn Brenig & Alwen Reservoir.


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A cycle route of approximately 14 miles. The route is made up of gravel paths and forest trails, not suitable for road bikes. A fairly flat route with two hilly sections, One at the head of the lake and the other at Nant Heilyn.

Llyn Brenig is a reservoir located about 10 miles south west of the welsh town of Denbigh, just off the B4501 in the heart of Denbigh Moors. The reservoir was completed in 1976 and has a surface area of 920 acres, and is the fourth largest reservoir in Wales. The Alwen Reservoir is held back by a 90 ft dam and was built in 1921, originally to supply water to Liverpool and Birkenhead. Both lakes are set in wonderful surroundings it is the ideal setting for a leisure ride around the lake.
Starting from the Visitors Centre on Llyn Brenig (see map) cycle in an anti clockwise direction around the reservoir crossing over the dam and then cycle your way around the lake at your leisure. At the head of the lake there is a section of the cycle ride where you cycle along a short section of the public road.

When you leave the road and rejoin the trail, this section of the trail is steep and narrow. Follow the trail straight across the head of the lake and past the nature reserve on your right until you reach the head of the second reservoir The Alwen Reservoir.

At The Alwen reservoir cycle across the lake and up the hill by Nant Heilyn and follow the trail round to the left and down the side of the lake. At the bottom of the lake turn left across the dam and then turn right along the trail which then takes you back up to The Visitors Centre and Llyn Brenig. The start/finish of your cycle ride.

There is a Visitors Centre, Toilets and several car parks at the reservoir.

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