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Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas

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Running trails & routes

Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas

Moderate

runners

Llyn Brianne Dam – Llyn Brianne Dam Crossing 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: May 8, 2026

Waypoints

Start point

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187 m

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

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

5.86 km

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

8.50 km

Path from Troed Rhiw to the Dam

Highlight • Trail

10.6 km

End point

Way Types & Surfaces

Way Types

7.02 km

1.91 km

1.72 km

Surfaces

7.02 km

1.79 km

1.74 km

108 m

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)

Weather

Sunday 17 May

11°C

6°C

95 %

Additional weather tips

Max wind speed: 20.0 km/h

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

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Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas

Waterfall Viewpoint

RSPB Gwenffrwd-Dinas Nature Reserve

Llyn Brianne Dam

Llyn Brianne Dam Crossing

Path from Troed Rhiw to the Dam

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