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Running trails & routes

Llyn Cefni Reservoir and Dam – Llyn Cefni loop from Llangristiolus

Running trails & routes

Llyn Cefni Reservoir and Dam – Llyn Cefni loop from Llangristiolus

Moderate

14

runners

Llyn Cefni Reservoir and Dam – Llyn Cefni loop from Llangristiolus

01:22

12.9km

100m

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: August 21, 2026

Waypoints

A

Start point

Bus stop

1

5.10 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

2

6.27 km

Llyn Cefni

Highlight • Lake

3

7.52 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

4

9.65 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

5

9.80 km

St Cyngar's Church, Llangefni

Highlight • Historical Site

St Cyngar's Church is a church in the town of Llangefni in Anglesey, Wales. The building dates from 1824. It was designated a Grade II listed building on 8 July 1952.

Tip by

6

10.1 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

10.1 km

Bulkley Square, Llangefni

Highlight • Cafe

Llangefni is the county town of Anglesey and the administrative centre. There is a museum and arts gallery as well as plenty of pubs and cafes. Mona House café on …

Tip by

8

10.5 km

Llangefni Town Centre and Fitness Trail

Highlight • Monument

A absolute pleasure to walk in such a beautiful perfect setting with RED SQUIRREL EVERYWHERE

Tip by

B

12.9 km

End point

Bus stop

Way Types & Surfaces

Way Types

6.69 km

5.06 km

939 m

203 m

< 100 m

Surfaces

5.46 km

3.01 km

2.26 km

1.65 km

547 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

9°C

47 %

Additional weather tips

Max wind speed: 25.0 km/h

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