Stone bridge over the River Cefni – Llyn Cefni Reservoir and Dam loop from Llanfairpwll

Bike touring routes & trails

Llanfair Pwllgwyngyll

Stone bridge over the River Cefni – Llyn Cefni Reservoir and Dam loop from Llanfairpwll

Hard

riders

Stone bridge over the River Cefni – Llyn Cefni Reservoir and Dam loop from Llanfairpwll

06:40

110km

730m

Cycling

Hard bike ride. Very 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 7, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Tirwedd Cenedlaethol Ynys Môn

SoDdGA Cors Ddyga

Waypoints

Start point

Train Station

Get Directions

10.9 km

Scenic Views on Sustrans Route 8

Highlight • Trail

13.5 km

Pont Marquis

Highlight • River

Pont Marquis Bridge
Spanning the Afon Cefni, carrying the Trefdraeth to Llangaffo road, c. 3km ENE of Malltraeth. The bridge, which is Grade II listed, was built in the early …

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29.0 km

A great little place to stop with interesting cafes and restaurants and a great little beach where you can watch kite surfers when there is a breeze. Fighter jets roar from the nearby airfield overhead.

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32.3 km

Coed Cwr Y Pwll

Forest

41.1 km

RAF Valley Aircraft Viewing Area

Highlight • Viewpoint

RAF Valley on Anglesey is home to No 4 Flying Training School, responsible for training the UK's next generation of world-class fighter pilots.

Safely watch aircraft at RAF Valley from …

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41.6 km

Llyn Cerrig Bach

Highlight • Historical Site

A spectacular spot not just for the scenery, bit as its next to the RAF base you have a good chance to spot some of the jets coming in and out.

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64.2 km

Ruins

97.1 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 …

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97.1 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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98.9 km

The Dingle (Nant y Pandy) Nature Reserve

Nature Reserve

100 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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110 km

End point

Train Station

Way Types & Surfaces

Way Types