Clywedog Dam – Yr Allt Summit Path loop from Pen-Y-Gaer

Hiking trails & Routes

Clywedog Dam – Yr Allt Summit Path loop from Pen-Y-Gaer

Easy

4.1

(10)

hikers

Clywedog Dam – Yr Allt Summit Path loop from Pen-Y-Gaer

01:34

5.21km

160m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 30, 2026

Waypoints

Start point

Parking

Get Directions

46 m

Clywedog Dam

Highlight • Lake

Built primarily to regulate the flow of water in the River Severn, the Clywedog Dam is an impressive sight. It's the tallest concrete dam in Britain, at 236 feet (72 …

Tip by

1.49 km

Picnic Table With View of River Valley

Highlight • River

Great hike but lots of fallen trees so made it much harder and longer

Tip by

1.66 km

Yr Allt Summit Path

Highlight • Summit

5.21 km

End point

Parking

Way Types & Surfaces

Way Types

3.13 km

711 m

473 m

452 m

441 m

Surfaces

3.62 km

711 m

473 m

277 m

128 m

Elevation

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

Highest point (380 m)

Lowest point (290 m)

Weather

Friday 9 October

11°C

7°C

52 %

Additional weather tips

Max wind speed: 31.0 km/h

to get more detailed weather forecasts along your route

Comments

January 1, 2024,Clywedog Reservoir

Set off from car park & turn right through a gate and head steep uphill. Turn right at the top onto the Glyndwr Way following for a short while before turning right through a stile. This ridge path heads along the Yr Allt peninsula going over the summit. The path at the waters edge turns sharp left & is followed …