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Hiking trails & Routes

Llwyn-on Reservoir loop

Hiking trails & Routes

Llwyn-on Reservoir loop

Easy

4.4

(42)

323

hikers

Llwyn-on Reservoir loop

01:26

5.50km

40m

Hiking

Hike the Llwyn-on Reservoir loop for expansive views of deep blue waters, framed by the rolling hills of the Brecon Beacons. This easy 3.4-mile (5.5 km) route takes about 1 hour and 26 minutes to complete, with a gentle elevation gain of 129 feet (39 metres). You will pass through…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Brecon Beacons National Park

Waypoints

A

Start point

Bus stop

1

473 m

Garwnant Visitor Centre

Highlight • Rest Area

Brecon Beacons visitor centre with plenty of parking, a children’s play area, cafe.

Tip by

2

1.06 km

View of Llwyn-on Reservoir from the west bank

Highlight • Lake

Look out for the opening in the hedge row, some gentle steps (3-4) and then a short trail to the water. Can easily walk your bike down, kick back and have some drink and recharge

Tip by

3

2.95 km

Llwyn-on Reservoir Dam

Highlight • Structure

Llwyn-on reservoir, built in 1926, covers 150 acres and is the largest of the three in the Taff Fawr Valleys area. Walking along the shore you can be immersed in …

Tip by

4

3.99 km

Llwyn-on Reservoir

Highlight • Forest

Zoe has given out a lot of the history of the dam. Let's just add a bit of local information to say that this is a hidden gem of a …

Tip by

B

5.50 km

End point

Bus stop

Way Types & Surfaces

Way Types

3.21 km

1.77 km

306 m

< 100 m

< 100 m

< 100 m

< 100 m

Surfaces

3.51 km

1.77 km

153 m

< 100 m

< 100 m

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Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Monday 19 October

8°C

3°C

-- %

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