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United Kingdom
Wales
North Wales
Anglesey
Bodffordd

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

Routes
Running trails & routes
United Kingdom
Wales
North Wales
Anglesey
Bodffordd

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

Moderate

8

runners

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

01:18

12.2km

70m

Running

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: March 27, 2026

Waypoints

A

Start point

Bus stop

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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

6.30 km

Afon Cefni River Trail

Highlight (Segment) • River

We rode from the North back to Llangefni and so rode along the impressive reservoir at the top of the valley then cruised all through the woods to the town itself on a smooth very rideable track. Beautiful and quiet.

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6

7.30 km

Llangefni Clock Tower

Highlight • Structure

Llangefni (meaning "church on the River Cefni", Welsh pronunciation: [ɬaŋˈɡɛvni]) population 5,116, making it the second-largest town in the county and the largest on the island. The community includes the …

Tip by

7

7.66 km

The Dingle Local Nature Reserve

Highlight • Gorge

The Dingle Local Nature Reserve is a 10 hectare (25 acre) wooded valley rich in wildlife and history. It is bisected by the river Cefni, which comes from the Welsh word "cafn" meaning trough or hollow.

Tip by

8

11.6 km

Afon Cefni River

Highlight • Other

B

12.2 km

End point

Bus stop

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Way Types & Surfaces

Way Types

8.36 km

2.64 km

829 m

293 m

Surfaces

3.42 km

3.30 km

2.82 km

2.45 km

120 m

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Elevation

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 26 May

27°C

14°C

0 %

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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