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Running trails & routes

Carmarthenshire

Waterfall Viewpoint – Llyn Brianne Dam loop from RSPB Gwenffrwd-Dinas

Running trails & routes

Carmarthenshire

Waterfall Viewpoint – Llyn Brianne Dam loop from RSPB Gwenffrwd-Dinas

Moderate

5

runners

Waterfall Viewpoint – Llyn Brianne Dam loop from RSPB Gwenffrwd-Dinas

01:10

10.6km

230m

Running

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Last updated: August 26, 2026

Waypoints

A

Start point

1

187 m

Waterfall Viewpoint

Highlight • Viewpoint

2

2.60 km

RSPB Gwenffrwd-Dinas Nature Reserve

Highlight • Forest

This charming RSPB site is not far from Llyn Brianne and is home to Twm Sion Cati's cave. You'll find a great circular footpath running nearby the river, boasting beautiful …

Tip by

3

5.02 km

Llyn Brianne Dam

Highlight • Viewpoint

Stunning spot and worth the extra few hundred metres detour if the plan is otherwise to simply ride around the reservoir.

You'll find brilliant gravel and forestry roads on one …

Tip by

4

5.81 km

Llyn Brianne Dam Crossing

Highlight • Bridge

Llyn Brianne is a spectacular reservoir at almost 300m (990ft) above sea level. It is Wales second largest reservoir by volume and is contained by a 91m (300ft) stone-built dam, which is the largest of its kind in Europe.

Tip by

5

8.44 km

Path from Troed Rhiw to the Dam

Highlight • Trail

B

10.6 km

End point

Way Types & Surfaces

Way Types

6.67 km

1.98 km

1.96 km

Surfaces

6.67 km

1.85 km

1.28 km

700 m

108 m

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Elevation

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

Highest point (310 m)

Lowest point (130 m)

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Weather

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Today

Tuesday 6 October

12°C

7°C

82 %

Additional weather tips

Max wind speed: 25.0 km/h

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