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MTB trails
United Kingdom
Wales
North Wales
Denbighshire

Cyffylliog

The best MTB trails around Cyffylliog

4.3

(59)

527

riders

28

rides

Mountain biking around Cyffylliog offers diverse landscapes within Denbighshire, Wales. The area features the Clywedog Valley, characterized by rolling, tree-clad hills and extensive woodlands like Clocaenog Forest. The River Clywedog adds to the scenic beauty, providing riverside paths. From various points, mountain bikers can experience views of the Denbigh Moors and the Clwydian Range.

Best mountain bike trails around Cyffylliog

  • The most popular mountain bike trail is Llyn Brenig – Alwen Dam loop from Llanfihangel Glyn Myfyr, a 28.8…

Last updated: May 14, 2026

5.0

(1)

19

riders

#1.

Llyn Brenig – Alwen Dam loop from Llanfihangel Glyn Myfyr

46.4km

03:58

700m

700m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate
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Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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North Wales mountain biking — Gogledd Cymru's finest

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North Wales mountain biking — Gogledd Cymru's finest

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Tips from the Community

Jim Berry
August 15, 2025, Forest Pond

A few metres off the track. Access can get a little overgrown.

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Not all trails in this area permit mountain bikes. Check it first. The rangers over there are zealots.

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Kentishbob
August 5, 2024, Llyn Brenig

Though it was not a tough or technical ride, it did take me into territory I had never visited before and was a lovely antidote to the 'fleshpots' of Gwydir Forest or Coed-y-Brenin. Some lovely gentle singletrack, beautiful views and I didn't see another rider for the whole trip - although tbh I did set off at 08.30 on a Wednesday!!

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Penycloddiau is a hill in Flintshire, Wales, and one of five Marilyns in the Clwydian Range. The hill, like Foel Fenlli and Moel Arthur to the south, has an Iron Age hillfort at its summit. It covers 26 hectares making it one of the largest hillforts in Wales.

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Explore over 2500 acres of forest, moorland and lakes amid stunning upland scenery. With visitor centre, café, gift shop, osprey exhibition, adventure playground, cycle hire, mountain biking, walking trails, sailing and world class fishing to discover. Perfect cycling conditions for all ages and abilities. Hire from a wide range of bikes or bring your own ride. Enjoy a gentle family ride on an e-bike or an exhilarating mountain bike adventure.

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Llyn Brenig is a reservoir located on Denbigh Moors in North Wales. The artificial lake, which was constructed between 1973 and 1976, was created by building an embankment dam across the Afon Brenig valley. It lies at 1,200 ft above sea level on the border between the counties of Conwy and Denbighshire.

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The views over Alwen Reservoir from this section along the northern shore are simply wonderful! You'll take them in if you follow the waymarked Alwen or Lakes Circular routes. You move between open views and between the trees, but both are pretty spectacular, especially at sunset.

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The grand, ornate stone dam of Alwen Reservoir couldn't be more of a contrast to the neighbouring Llyn Brenig Dam. It's well worth taking a minute or two to take in this magnificent feat of engineering, that was completed in 1920. The reservoir here was built to provide drinking water for Liverpool and the Wirral.

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Frequently Asked Questions

What types of mountain bike trails can I find around Cyffylliog?

Cyffylliog offers a diverse range of mountain bike trails, catering to various skill levels. You'll find everything from easy loops suitable for beginners to challenging rides requiring very good fitness and advanced skills. The area features rolling hills, extensive forest tracks within Clocaenog Forest, and scenic valleys, with a total of over 30 routes available.

Are there any easy mountain bike trails suitable for beginners or families?

Yes, there are several easy mountain bike trails around Cyffylliog. For a more relaxed ride, consider the Llyn Brenig Dam – Llyn Brenig loop from Llyn Brenig Visitor Centre. This easy 20.9 km route takes approximately 1 hour 47 minutes to complete and offers pleasant scenery around the reservoir, making it a good option for those looking for a less strenuous experience.

Which mountain bike trails offer the best views of the region?

Many trails in the Cyffylliog area provide stunning views. Routes that ascend to higher ground, especially towards the Clwydian Range or Moel Famau, offer panoramic vistas across the Vale of Clwyd to Snowdonia and the English border. For a challenging ride with rewarding views, the Moel Famau Summit – Coed Nercwys Forest loop from Ruthin is a difficult 77.4 km trail that includes the ascent to Moel Famau Summit, where you can also see the historic Jubilee Tower.

Are there mountain bike routes that are circular?

Yes, many of the mountain bike routes around Cyffylliog are designed as circular loops, allowing you to start and finish at the same point. A popular moderate circular route is the Llyn Brenig Visitor Centre – Llyn Brenig loop from Llyn Brenig Visitor Centre, which circles Llyn Brenig and covers 49.6 km in about 4 hours 15 minutes.

What natural features can I expect to see along the mountain bike trails?

The trails around Cyffylliog are rich in natural beauty. You'll encounter the picturesque Clywedog Valley, with its rolling, tree-clad hills and expansive woodlands like Clocaenog Forest. The fast-flowing River Clywedog and its small waterfalls add to the scenic charm, and many routes offer views of the Denbigh Moors and the majestic Clwydian Range. The reservoirs of Llyn Brenig and Alwen Dam are also prominent natural features along several routes.

What do other mountain bikers say about the trails in Cyffylliog?

The mountain bike trails around Cyffylliog are highly rated by the komoot community, with an average score of 4.3 stars from over 60 reviews. More than 500 mountain bikers have used komoot to explore the varied terrain, often praising the diverse landscapes, extensive forest tracks, and the options available for different ability levels.

Are there any historical landmarks or attractions near the mountain bike routes?

Yes, the region offers several interesting landmarks. The Jubilee Tower on Moel Famau, a Grade II-listed monument, is a notable historical site often visible from or accessible via trails. The nearby town of Ruthin, just 6km to the east, boasts a rich cultural history and charming town center. Within Cyffylliog itself, you can find the historic St. Mary's Church and an unusual Georgian 'hearse house'.

Is there parking available near the mountain bike trailheads?

Yes, parking is generally available at key starting points for many routes. For example, routes around Llyn Brenig often have designated parking areas, such as near the Llyn Brenig Visitor Centre. When planning your ride, it's advisable to check the specific route details on komoot for recommended starting points and parking information.

Can I find places for refreshments or a pub lunch after a ride?

Absolutely. The village of Cyffylliog itself has amenities like the welcoming Red Lion pub, perfect for a post-ride refreshment. Additionally, the nearby town of Ruthin offers a wider selection of cafes, pubs, and restaurants. Some routes, particularly those around Llyn Brenig, may also have visitor centres with facilities.

What is the best time of year to go mountain biking in Cyffylliog?

The spring and autumn months generally offer the most pleasant conditions for mountain biking in Cyffylliog, with milder temperatures and beautiful seasonal foliage. Summer can also be excellent, though trails might be busier. While winter riding is possible, be prepared for potentially wet and muddy conditions, especially on forest tracks, and shorter daylight hours.

Are there any long-distance mountain bike routes in the area?

Yes, for those seeking longer rides, Cyffylliog offers several extensive routes. The Llyn Brenig – Alwen Dam loop from Llanfihangel Glyn Myfyr is a moderate 46.4 km trail that takes approximately 3 hours 58 minutes. Another option is the Alwen Dam – Llyn Brenig loop from Derwen, a 50.4 km route often completed in about 4 hours 23 minutes, both exploring the scenic reservoir areas.

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