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Llanwrthwl

Claerwen Dam – Llanerchi Woods loop from Claewen Dam

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Llanwrthwl

Claerwen Dam – Llanerchi Woods loop from Claewen Dam

Moderate

4.3

(4)

hikers

Claerwen Dam – Llanerchi Woods loop from Claewen Dam

03:55

13.8km

290m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: April 7, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Elenydd SSSI

Waypoints

Start point

Parking

Get Directions

746 m

Claerwen Dam

Highlight • Monument

The Claerwen dam took 6 years ti complete and was finished in 1952.
It was given a late Victorian finsh so that it blended in with the earlier dams in the valley.

It's a big one - almost twice the size of the other dams in the Elan valley and the Claerwen reservoir is almost the size of all the other reservoirs in the Elan Valley system combined.

Tip by

4.94 km

Singletrack Descent with View of Lake and Hills

Highlight • MTB Park

Incredible descent with fantastic panoramic views.

Tip by

5.05 km

Llanerchi Woods

Highlight • Forest

Fantastic panoramic views over the reservoirs.

Tip by

5.47 km

View of Craig Goch Reservoir

Highlight • Lake

6.02 km

Nantgwyllt Church

Highlight • Religious Site

Small chapel rebuilt by Birmingham Water Corporation at the turn of 19 century to replace the one flooded when the dams & reservoirs were built to supply the growing population with water.

Tip by

11.8 km

TransCambrian Way Sunken Road

Highlight • Viewpoint

Forming a very wet part of the TransCambrian Way, you will want to ensure your footwear waterproofing is up to spec before venturing along here.

Tip by

13.8 km

End point

Parking

Way Types & Surfaces

Way Types

8.15 km

4.45 km

1.14 km

< 100 m

Surfaces

7.69 km

4.45 km

1.37 km

316 m

Elevation

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

Highest point (440 m)

Lowest point (260 m)

Weather

Thursday 7 May

14°C

5°C

49 %

Additional weather tips

Max wind speed: 16.0 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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Claerwen Dam – Llanerchi Woods loop from Claewen Dam

Claerwen Dam

Singletrack Descent with View of Lake and Hills

Llanerchi Woods

View of Craig Goch Reservoir

Nantgwyllt Church

TransCambrian Way Sunken Road

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