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Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge

Routes

Hiking trails & Routes

Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge

Moderate

4.4

(16)

hikers

Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge

03:48

13.5km

270m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Last updated: February 27, 2026

Waypoints

Start point

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2.37 km

Fallen Trees

Highlight • Trail

Climb around the fallen trees

Tip by

4.70 km

Path from Troed Rhiw to the Dam

Highlight • Trail

7.33 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

8.17 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

10.6 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

13.3 km

The Towy Bridge Inn

Highlight • Pub

Delightful rural riverside location. Real ales usually from Welsh breweries. There is a large outdoor seating area with views across the river. Popular with walkers, bikers, cyclists and dogs welcome too!

Tip by

13.4 km

Rhandirmwyn Bridge

Highlight • River

Built in 1913 the Rhandirmwyn Bridge links the two sides of the Towy valley by this rivetted girder road bridge. On the southern side you'll find the Towy Bridge Inn, a lovely riverside pub.

Tip by

13.5 km

End point

Way Types & Surfaces

Way Types

9.75 km

1.89 km

1.81 km

Surfaces

9.70 km

1.90 km

1.68 km

117 m

< 100 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 (120 m)

Weather

Wednesday 6 May

13°C

6°C

26 %

Additional weather tips

Max wind speed: 15.0 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 Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge

Waterfall Viewpoint

Fallen Trees

Path from Troed Rhiw to the Dam