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Hiking trails & Routes

Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Isle of Anglesey

Hiking trails & Routes

Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Isle of Anglesey

Easy

22

hikers

Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Isle of Anglesey

01:11

4.62km

20m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 2, 2026

Waypoints

A

Start point

Bus stop

1

601 m

River Entering Llyn Llangefni

Highlight • Lake

2

1.07 km

Llyn Cefni

Highlight • Lake

3

2.24 km

Llyn Cefni Reservoir and Dam

Highlight • Structure

Llyn Cefni is a reservoir in central Anglesey. It's managed by Welsh Water. It was completed in 1951 and supplies water to most of Anglesey.

Tip by

4

2.31 km

Llyn Cefni Dam

Highlight • Monument

Llyn Cefni Dam

During World War II, a water scheme was devised for the town of Llangefni in central Anglesey. It involved water from a local source being pumped to …

Tip by

5

4.02 km

Afon Cefni River

Highlight • Other

B

4.62 km

End point

Bus stop

Way Types & Surfaces

Way Types

3.51 km

864 m

210 m

Surfaces

3.42 km

751 m

412 m

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Elevation

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

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Weather

Powered by Foreca

Tuesday 6 October

13°C

8°C

40 %

Additional weather tips

Max wind speed: 25.0 km/h

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