Skamper
5.0km

Llwyn-on Reservoir Loop — 5.0 km Running Route

by Skamper

Llwyn-on Reservoir Loop is a 5.0 km (3.1 miles) loop in Hirwaun, Brecon Beacons, Wales: flat, with 28 m of climb, on paved ground.

Brecon Beacons National Park
28 mAscent
Paved100%Paved
1/5Hilly

Start anywhere route. Jump on the course line at any point — wherever you start will also be your finish point.

Llwyn-on Reservoir Loop running route
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Photos

Llwyn-on Reservoir Loop - Photo 1
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Elevation

Explore the Llwyn-on Reservoir Loop

Location: Hirwaun, Brecon Beacons, Wales

Lace up for a refreshing 5km run around the picturesque Llwyn-on Reservoir, nestled in the stunning Brecon Beacons near Hirwaun. This largely flat, paved loop offers consistent terrain, making it ideal for maintaining an even pace while enjoying the serene Welsh landscape. It's a fantastic option for a steady training run or a leisurely jog with beautiful views of the water and surrounding hills.

The route is easily accessible and circumnavigates the reservoir clockwise. While the existing notes mention trails and singletrack, the *overwhelmingly paved nature* of this 5km loop means it's a solid choice for those preferring a smooth, predictable surface for their run. It's perfect for a convenient daily training session, offering a gentle ascent that adds just a touch of challenge without being strenuous.

Common questions

How long is this route?
It's a 5.0 km loop in Hirwaun, Brecon Beacons, Wales with around 28 metres of total ascent.
How long will it take me to run it?
Use the 'Your time estimate' panel at the top of this page — it predicts your finish time for this exact route from your age, sex and most recent benchmark, accounting for distance, ascent and surface.
Is it hilly?
Barely. It rates 1 out of 5 on our hill scale — gently undulating. About 6 metres of climb per kilometre, 28 metres in total.
What's the surface like?
It's 100% paved — runnable in road shoes year-round.
Is it suitable for a 5k?
Yes. At 5.0 km it's close to a 5k, so it works well as a 5k training run or time trial.

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