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Hiking trails & Routes

Carmarthenshire

Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

Hiking trails & Routes

Carmarthenshire

Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

Moderate

13

hikers

Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

03:20

12.6km

110m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 12, 2026

Waypoints

A

Start point

Bus stop

1

3.42 km

Cwm Lliedi Reservoir

Highlight • Lake

This beautiful reservoir is framed by the stunning mountain scenery of the Brecon Beacons. From the vantage point of the Swidd Valley Trail, you can enjoy a great view of the reservoir and its picturesque surroundings.

Tip by

2

3.71 km

Swiss Valley Trail

Highlight • Cycleway

You get a temperature drop as your ride through this cutting in the rocks. Great on a warm day but can be chilly at other times.

Tip by

3

4.76 km

Swiss Valley Reservoir

Highlight • Structure

4

5.31 km

Steve

Highlight • Other

5

6.34 km

Disused Kiln and Chimney

Highlight • Historical Site

disused kiln, hidden in wood to side of trail very overgrown but worth a look,

Tip by

6

9.19 km

Swiss Valley Reservoir (Lower Lliedi Reservoir)

Highlight • Cycleway

Great place to canoe or SUP. Organised tours can be arranged or you can self-launch, with permission.

Tip by

B

12.6 km

End point

Bus stop

Way Types & Surfaces

Way Types

7.84 km

3.18 km

1.48 km

158 m

Surfaces

8.17 km

2.32 km

1.96 km

126 m

< 100 m

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Elevation

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Weather

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Monday 19 October

13°C

7°C

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