Llyn Brenig and Alwen Reservoir Walk – Two Lakes Trail
Long route around both Llyn Brenig and Alwen Reservoir. An ideal walk for a winter’s day – if the roads are open.
|21.8 km||364 m||6 hours or so|
Calculate the time using Naismith’s Rule and factor in your own pace.
Start and Finish: Alwen Reservoir
The Llyn Brenig Visitor Centre is on the route while the nearest pub is the The Sportsmans Arms – though we suggest giving them a ring to check if they’re open (were open at time of writing)
Public Transport: Traveline for UK Public Transport
Parking and Post Code for Sat Nav (where applicable): check the map
Parking at the start of the route
Check out our Best Mountain Weather Forecast?
Llyn Brenig and Alwen Reservoir Walk – Two Lakes Trail Route Map and GPX Download
Summits and Places on this Route
Llyn Brenig and Alwen Reservoir Walk – Two Lakes Trail Details
The Two Lakes Trail in Mynydd Hiraethog takes you first around Alwen Reservoir (not to be confused with nearby Llyn Alwen!) before taking on the walk around Llyn Brenig. While the route looks reasonably flat, over the 21km it covers the ascent builds up to a not insignificant 400m or so. Those looking to just walk around Llyn Brenig rather than the full Two Lakes Trail, can view our Walk around Llyn Brenig post. Or for the Alwen Reservoir, read our description of the Alwen Reservoir Section here.
The route is also a great family cycle ride, with the trails all straightforward forestry tracks rather than a true mountain bike trail.
There’s the Llyn Brenig Visitor Centre to stop at on the way around – it’s well worth the small diversion.
Llyn Brenig and Alwen Reservoir Walk – Two Lakes Trail Route
Dave also established Walk up Snowdon, Walk up Scafell Pike and Walk up Ben Nevis just to mention a few.
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