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Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

Moderate

riders

Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

01:28

23.7km

290m

Road cycling

Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is accessible with public transport.

Last updated: May 10, 2026

Tips

Cycling is not permitted along parts of this route

After 0 m for 282 m

After 23.5 km for 282 m

Waypoints

Start point

Bus stop

Get Directions

3.22 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

3.29 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

3.51 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

4.53 km

Swiss Valley Reservoir

Highlight • Structure

6.12 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

13.6 km

Mynydd Sylen Summit

Highlight • Summit

The height of the summit from sea level is 284 meters (932 ft).

Tip by

13.8 km

View from Mynydd Sylen

Highlight • Summit

The height of the summit from sea level is 284 meters (932 ft). You will have enjoyed some sustained climbing and steep grades by the time you get here! But you're rewarded with some fine views.

Tip by

14.7 km

Horeb to Sylen Climb

Highlight (Segment) • Climb

Sustained climb with some steep grades.

Tip by

23.7 km

End point

Bus stop

Way Types & Surfaces

Way Types

13.0 km

6.97 km

2.46 km

604 m

520 m

132 m

Surfaces

21.5 km

1.52 km

556 m

117 m

Elevation

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

Highest point (260 m)

Lowest point (30 m)

Weather

Thursday 21 May

18°C

13°C

0 %

Additional weather tips

Max wind speed: 17.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Cwm Lliedi Reservoir – Swiss Valley Trail loop from Llanelli

Cwm Lliedi Reservoir

Swiss Valley Reservoir (Lower Lliedi Reservoir)

Swiss Valley Trail

Swiss Valley Reservoir

Disused Kiln and Chimney

Mynydd Sylen Summit

View from Mynydd Sylen

Horeb to Sylen Climb

Nearby routes

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