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Hiking trails & Routes

Rhondda Cynon Taf

Garwnant Visitor Centre – Llwyn-on Reservoir Dam loop from Llwyn-onn

Hiking trails & Routes

Rhondda Cynon Taf

Garwnant Visitor Centre – Llwyn-on Reservoir Dam loop from Llwyn-onn

Easy

4.7

(3)

32

hikers

Garwnant Visitor Centre – Llwyn-on Reservoir Dam loop from Llwyn-onn

01:38

6.17km

60m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 6, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

A

Start point

Bus stop

1

484 m

Garwnant Forest and Lake

Highlight • Forest

2

702 m

Llwyn Onn Reservoir

Highlight • Structure

Smaller reservoir than others in the area, but with stunning landscape great off road paths to keep you away from the A470

Tip by

3

2.34 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

4

3.20 km

Garwnant Visitor Centre

Highlight • Rest Area

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

Tip by

5

5.65 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

6

5.78 km

Llwyn-on Reservoir Dam Tower

Highlight • Viewpoint

Amazing views especially at night with a bright torch

Tip by

B

6.17 km

End point

Bus stop

Way Types & Surfaces

Way Types

4.31 km

1.16 km

559 m

< 100 m

< 100 m

Surfaces

3.60 km

1.56 km

800 m

133 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

Powered by Foreca

Tuesday 6 October

13°C

6°C

27 %

Additional weather tips

Max wind speed: 25.0 km/h

to get more detailed weather forecasts along your route

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