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

Bike touring routes & trails

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

Easy

5.0

(1)

riders

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

01:10

18.1km

100m

Cycling

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 18, 2026

Tips

Includes a segment in which cycling is not permitted

After 12.4 km for 198 m

Waypoints

Start point

Bus stop

Get Directions

1.07 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.

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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

5.31 km

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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7.99 km

Lon Las Cefni cycle path along the Afon Cefni

Highlight • Cycleway

Komoot suggests that road bikes may not be suitable, you might have to stop and push across the road but it's fine and legal under your wheels.

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9.57 km

Ynys Cefni

Highlight • Lake

12.2 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 …

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17.5 km