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Routes
Hiking trails & Routes
United Kingdom
Wales
North Wales
Anglesey
Llangefni

Lôn Las Cefni Trail

Moderate

4.4

(19)

210

hikers

Lôn Las Cefni Trail

02:53

11.1km

70m

Hiking

Hike the moderate Lôn Las Cefni Trail, a 6.9-mile route through diverse landscapes and wildlife havens on Anglesey, including Llyn Cefni Res

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

2.23 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

10.8 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

B

11.1 km

End point

Parking

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Way Types & Surfaces

Way Types

7.13 km

3.44 km

525 m

Surfaces

6.35 km

1.88 km

1.12 km

481 m

431 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

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Tuesday 5 May

13°C

2°C

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This route was planned by komoot.

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Frequently Asked Questions

What is the overall difficulty and terrain like on the Lôn Las Cefni Trail?

The trail is generally considered easy and predominantly flat, making it suitable for a wide range of hikers. Much of the route is traffic-free and features well-maintained surfaces, with a high percentage of asphalt. While mostly flat, particularly the section between Llangefni and Malltraeth, there are some slightly more challenging parts, such as forestry tracks in Newborough Forest that can be slippery, and a rougher, sometimes muddy path around Llyn Cefni.

What are the main points of interest and scenic highlights along the route?

The route offers a rich variety of landscapes. You'll pass through Llyn Cefni Reservoir and Dam, Malltraeth Marsh (a Site of Special Scientific Interest), and the beautiful Dingle Nature Reserve with its boardwalks and sculptures. The trail also follows the Afon Cefni river, passes under a disused railway line, and can extend to Newborough Forest, known for its Corsican pines and red squirrels.

Is the trail suitable for families and beginners?

Yes, the trail is predominantly flat and considered easy, making it very suitable for families and those new to hiking. Its largely traffic-free sections contribute to a safe and enjoyable experience for all ages.

Where can I park and access the trail?

The trail can be joined at multiple locations, and parking is available at these points. Key access points include Malltraeth, Llangefni, Bodffordd, and Llyn Cefni. Llangefni, an old market town, also provides amenities.

What kind of wildlife can I expect to see?

The trail is a haven for nature lovers. You can enjoy excellent birdwatching opportunities at Malltraeth Marsh and the Cefni Estuary, with sightings of wetland birds like the Eurasian bittern and grey heron. The Dingle Nature Reserve and Newborough Forest are great places to spot red squirrels, herons, buzzards, and various ducks.

Is the Lôn Las Cefni Trail dog-friendly?

While the trail is generally accessible, specific rules for dogs are not detailed in the provided information. Given that it passes through nature reserves and areas with abundant wildlife, it's advisable to keep dogs on a leash to protect local fauna and ensure a pleasant experience for all trail users.

Do I need a permit or is there an entrance fee to use the trail?

There is no mention of any permits or entrance fees required to access and hike the Lôn Las Cefni Trail. It appears to be freely accessible to the public.

What is the best time of year to hike this trail?

The trail offers diverse scenery and wildlife viewing opportunities throughout the year. Spring and autumn might be particularly pleasant for birdwatching and enjoying the changing foliage. Summer provides longer daylight hours, while winter can offer a peaceful, crisp experience, though some sections might be muddier.

Are there places to eat or resupply along the way?

Yes, the trail passes through Llangefni, an old market town, which provides places to eat and restock supplies. Additionally, Bulkley Square, Llangefni is noted as a cafe highlight. There are also wooden benches along the route for breaks.

Does the trail intersect with other well-known paths?

Yes, the route incorporates sections of several other paths. Notably, it covers a significant portion of the Lôn Las Cefni trail itself (71%) and also passes through sections of the Dingle Cycle Route, Anglesey Central Railway, and the Dingle Boardwalk Route.

What is a good strategy for hiking the Lôn Las Cefni Trail?

Given that the path can be joined at multiple locations like Malltraeth, Llangefni, Bodffordd, and Llyn Cefni, you have flexibility. If you're looking for a less strenuous walk, focus on the predominantly flat sections between Llangefni and Malltraeth. For a more varied experience, be prepared for potentially slippery forestry tracks in Newborough Forest or a rougher, muddy path around Llyn Cefni.

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Trail Reviews

Brian and WH VIZSLA
June 8, 2024, Cefni reservoir loop from Llangefni — Anglesey

Parking at the Dingle Pay and display facing St Cyngars Church

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