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Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from River Towy

Routes

Running trails & routes

Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from River Towy

Moderate

runners

Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from River Towy

01:20

11.7km

270m

Running

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 15, 2026

Waypoints

Start point

Parking

Get Directions

323 m

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

1.89 km

Twm Siôn Cati's Cave

Highlight • Viewpoint

Twm Siôn Cati's Cave Is Situated within the RSPB Gwenffrwd-dinas Nature Reserve, the cave is reachable by a walk through woodlands, alongside a river bank and a steep climb to the top of Dinas Hill.

Tip by

2.35 km

RSPB Gwenffrwd-Dinas

Nature Reserve

3.75 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

6.16 km

Path from Troed Rhiw to the Dam

Highlight • Trail

11.1 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

11.7 km

End point

Parking

Way Types & Surfaces

Way Types

6.05 km

3.31 km

1.89 km

390 m

< 100 m

Surfaces

6.05 km

2.01 km

1.96 km

1.68 km

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

93 %

Additional weather tips

Max wind speed: 19.0 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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Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from River Towy

Llyn Brianne Dam

Twm Siôn Cati's Cave

RSPB Gwenffrwd-Dinas Nature Reserve

Waterfall Viewpoint

Path from Troed Rhiw to the Dam

Llyn Brianne Dam Crossing

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