Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Routes
Cycling routes
United Kingdom
Wales
North Wales
Anglesey

Cefni Reservoir

The best cycling routes around Cefni Reservoir

4.5

(83)

772

riders

75

rides

Circular bike routes around Cefni Reservoir offer paths through varied landscapes on Anglesey. The region features the reservoir itself, alongside Cefni Forest and the River Cefni, providing a mix of waterside and wooded sections. Elevation changes are generally gentle, with some routes including moderate climbs, making it suitable for different cycling abilities.

Best touring cycling routes around Cefni Reservoir

  • The most popular touring cycling route is Llynnon Mill & RAF Valley loop from Llyn Cefni — Ynys Môn / Anglesey, a 36.6 miles (58.9 km) trail that takes 3 hours 36 minutes to complete. This route explores the wider Anglesey landscape, passing by Llynnon Mill and RAF Valley.
  • Another top favourite among local touring cyclists is Stone bridge over the River Cefni – Llanddwyn Beach loop from Anglesey, a moderate 27.1 miles (43.7 km) path. This route connects the reservoir area with coastal scenery and the River Cefni.
  • Local touring cyclists also love the Llyn Cefni – Llyn Cefni Reservoir and Dam loop from Llangwyllog, a 3.7 miles (6.0 km) trail leading through reservoir surroundings, often completed in about 33 minutes.
  • Touring cycling around Cefni Reservoir is defined by reservoir paths, Cefni Forest trails, and gentle Anglesey countryside. The network offers options for different ability levels, including easy bike trails Cefni Reservoir for beginners.
  • The routes in Cefni Reservoir are highly rated by the komoot community with an average score of 4.6 stars from over 80 reviews. More than 800 touring cyclists have used komoot to explore Cefni Reservoir's varied terrain.

Last updated: July 8, 2026

1

riders

#1.

Llynnon Mill & RAF Valley loop from Llyn Cefni — Ynys Môn / Anglesey

58.9km

03:37

380m

380m

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Navigate with device

Send to Phone

Save

Moderate

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
guide_signup
Let us show you the way with the komoot mobile app
With a free komoot account, you can easily find, customize, and navigate endless outdoor adventures.

Sign up for free

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Easy

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Easy
Sign up for free to see 71 more rides around Cefni Reservoir.

Get access to more routes and recommendations from other explorers.

Sign up for free

Already have an account?

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Start today with a free account

Your next adventure awaits.

Login or Signup

Popular around Cefni Reservoir

Hiking around Cefni Reservoir

Running Trails around Cefni Reservoir

Road Cycling Routes around Cefni Reservoir

MTB Trails around Cefni Reservoir

Tips from the Community

AWM
February 21, 2026, Llyn Cefni Reservoir and Dam

We visited for the Parkrun, which was cancelled whilst a walkway is fixed (some more weeks, I would expect). You can still access the lake along the disused railway line for part of the way - but not a good surface for running. Then there is a path around the lake with views across the lake and stretches through the woods, lovely, if rather muddy in places following wet weather. In total about 9 km around. Hope to do this again in the Spring with the promise of wild daffodils and perhaps a red squirrel.

0

0

Quiet paths easy cycling crosses deserted railway line still present, which there trying to reopen

0

0

Targi
September 1, 2025, Cefni Forest

Cefni Forest on Anglesey surrounds Llyn Cefni reservoir near Llangefni. It offers peaceful woodland trails for walking and cycling, linking to the Lon Las Cefni route. The forest is a sanctuary for red squirrels and diverse birdlife, making it a perfect spot for quiet nature exploration and wildlife watching.

1

0

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 two settling tanks in the Dingle part of the town. From here the water was pumped across the river to a reservoir and water tower, on the site of the present Pennant Estate. These arrangements became redundant with the building of the Cefni Reservoir, which was completed in 1951, but the settling tanks and pumping station survive in Llangefni to this day. The new scheme was designed to supply most of the water needs for the people of Anglesey for the foreseeable future

3

0

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 C19, was named for the Earl of Uxbridge, first Marquis of Anglesey. It gives wonderful scenery over the marsh land and plenty of wildlife.

6

0

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 village of Rhosmeirch. Wonderful welsh town with all the shop can get busy in summer holidays.

4

0

The largest town on Anglesey (Holyhead is twice the size but is technically on Holy Island). Now bypassed by the island’s main roads which actually makes it a decent hub if you’re cycling across the south of the island.

0

0

The only crossing point for the Afon Cefni between the coast and the A5, with great views over the marshes and the straightened channel of the river.

2

0

Frequently Asked Questions

What is the overall difficulty level for touring cycling routes around Cefni Reservoir?

The routes around Cefni Reservoir cater to a range of abilities. There are 15 easy routes perfect for beginners, 57 moderate routes for those seeking a bit more challenge, and 10 difficult routes for experienced touring cyclists. This variety ensures there's something for everyone, from gentle reservoir paths to routes with moderate climbs.

Are there any family-friendly cycling routes near Cefni Reservoir?

Yes, Cefni Reservoir offers several family-friendly options. Routes like the Llyn Cefni – Llyn Cefni Reservoir and Dam loop from Llangwyllog are classified as easy, covering about 6 km in under an hour, making them suitable for families with children or those looking for a relaxed ride. These routes typically feature gentle terrain around the reservoir.

Can I find circular bike routes around Cefni Reservoir?

Yes, circular routes are a defining characteristic of touring cycling around Cefni Reservoir. Many of the 82 available routes are loops, allowing you to start and finish at the same point. For example, the Llyn Cefni Reservoir and Dam – Cefni Forest loop from Anglesey offers a pleasant circular ride through varied scenery.

What are the best seasons for touring cycling around Cefni Reservoir?

Touring cycling around Cefni Reservoir is enjoyable throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery, with changing foliage or blooming wildflowers. Summer is also popular, though routes can be busier. Winter cycling is possible, but be prepared for cooler, potentially wetter conditions, and shorter daylight hours.

Are there any points of interest or landmarks to see along the cycling routes?

Yes, several routes incorporate interesting landmarks and natural features. For instance, the Llynnon Mill & RAF Valley loop from Llyn Cefni — Ynys Môn / Anglesey takes you past historic Llynnon Mill and offers views of RAF Valley. Other routes connect to the River Cefni, Cefni Forest, and even coastal areas like Llanddwyn Beach, providing diverse scenery.

What do other touring cyclists enjoy most about Cefni Reservoir?

The area is highly rated by the komoot community, with an average score of 4.6 stars from over 80 reviews. Touring cyclists often praise the varied landscapes, which include tranquil reservoir paths, sections through Cefni Forest, and views of the wider Anglesey countryside. The network's suitability for different ability levels is also frequently highlighted.

Are there routes that explore Cefni Forest?

Absolutely. Cefni Forest is a prominent feature of the area, and several touring cycling routes pass through or around it. The Cefni Forest – Mynydd Bodafon Summit loop from Anglesey is a moderate route that takes you through the forest and towards Mynydd Bodafon Summit, offering a mix of wooded and open landscapes.

How long does it typically take to cycle the routes around Cefni Reservoir?

The duration varies significantly depending on the route's length and your pace. Shorter, easy routes like the Llyn Cefni – Llyn Cefni Reservoir and Dam loop from Llangwyllog can be completed in about 33 minutes. Longer, moderate routes, such as the Stone bridge over the River Cefni – Llanddwyn Beach loop from Anglesey, might take around 2 hours 53 minutes.

Are there any routes that combine reservoir views with coastal scenery?

Yes, some routes offer a fantastic blend of inland and coastal landscapes. The Stone bridge over the River Cefni – Llanddwyn Beach loop from Anglesey is a great example, connecting the Cefni Reservoir area with the River Cefni and extending towards the beautiful Llanddwyn Beach, providing diverse views.

What kind of terrain can I expect on the touring cycling routes?

The terrain around Cefni Reservoir is varied but generally manageable for touring cyclists. You'll find smooth reservoir paths, sections through Cefni Forest, and quiet country roads across the Anglesey landscape. While elevation changes are mostly gentle, some routes include moderate climbs, offering a good mix for different preferences.

Is it possible to reach higher viewpoints on the cycling routes?

Yes, some routes offer opportunities to reach higher ground for panoramic views. For example, the Cefni Forest – Mynydd Bodafon Summit loop from Anglesey includes a section towards Mynydd Bodafon Summit, which provides elevated perspectives of the surrounding area and beyond.

Most popular routes around Cefni Reservoir

Hiking around Cefni Reservoir

Store rating

Get inspired with the komoot mobile app

With a free komoot account, you can easily find, customize, and navigate endless outdoor adventures.

or

Join komoot Now

Store rating

Explore more

Browse the best Cycling routes in other regions.

Anglesey Aonb (Ahne Ynys Môn)Menai BridgeCors Bodeilio National Nature ReserveRhosyrNewborough Warren And Ynys Llanddwyn National Nature ReserveLlyn LlywenanCoedwig Niwbwrch / Newborough ForestLlyn AlawBodorganLlanddaniel FabCors Goch National Nature ReserveLlanfair-Mathafarn-EithafLlaneugradPentraethLlannerch-Y-MeddHolyheadBodfforddLlanfachraethLlanfair-Yn-NeubwllRhoscolynLlanidanTref AlawCors ErddreiniogLlangefniLlanddyfnanBodedernBeaumarisValleyMechellLlanfihangel YsgeifiogPenmynyddLlanfair PwllgwyngyllCylch-Y-GarnLlanddonaLlaneilianAberffrawBryngwranLlanfaethluAmlwchLlyn CoronLlanfaelogCwm CadnantCemlyn LakeonLlangoedLlanbadrigLlangristiolusTrewalchmaiRhosybolMoelfreTrearddur

Nearby adventure guides

Things to Do around Llangefni

background

Get ready to conquer new peaks

Sign up for Free

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy