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Bike touring routes & trails
United Kingdom
Wales
North Wales
Denbighshire
Denbigh

Ruthin & Llyn Brenig loop from Denbigh

Hard

5.0

(1)

5

riders

Ruthin & Llyn Brenig loop from Denbigh

03:34

50.7km

760m

Cycling

This difficult 31.5-mile touring cycling loop from Denbigh offers dramatic Welsh scenery and challenging climbs around Llyn Brenig.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

51 m

Denbigh Castle Ruins

Highlight • Castle

The striking ruins of Denbigh Castle on top of a steep hill above the town provides commanding views out over the Vale of Clwyd and the undulating humped backed hills of the Clwydian Range.

Tip by

2

14.0 km

Ruthin Town Centre

Highlight • Settlement

Set in the North Wales county of Denbighshire, Ruthin is a gorgeous town with a rich cultural history. The centre of the old town, including St Peter's Square, is set …

Tip by

3

31.8 km

Llyn Brenig Dam

Highlight (Segment) • Structure

Crossing over the top of the Llyn Brenig dam you'll follow a wide and flat gravel track that makes for an easy ride while you soak in those marvellous views …

Tip by

4

33.4 km

Llyn Brenig is located at the heart of the Mynydd Hiraethog and is a good base for outdoor activities, including walking, cycling, fishing and sailing. It is a great spot …

Tip by

5

38.5 km

Cairn Ben Lloyd Singletrack

Highlight (Segment) • Cycleway

A fantastic section of singletrack as you wind your way through Gors Maen Llwyd nature reserve to the north of Llyn Brenig. The undulating trail features on the Two Lakes …

Tip by

B

50.7 km

End point

Parking

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Way Types & Surfaces

Way Types

41.7 km

3.58 km

3.19 km

1.46 km

642 m

114 m

Surfaces

29.7 km

16.0 km

4.58 km

424 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (450 m)

Lowest point (30 m)

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Weather

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Monday 25 May

27°C

16°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to start the Ruthin & Llyn Brenig loop from Denbigh?

While there isn't a specific designated trailhead parking for this loop, you can find public parking options in Denbigh town centre. It's advisable to check local parking regulations and availability before your visit.

Is this touring cycling route suitable for beginners?

No, this route is considered difficult for touring cycling. It involves significant elevation gains, with over 760 meters of climbing, and is best suited for cyclists with very good fitness and experience. Some sections may require pushing your bike.

What kind of terrain can I expect on the route?

The terrain is quite varied. You'll encounter a mix of paved surfaces, gravel tracks, forest tracks, and unsurfaced tracks. Around Llyn Brenig, there are wide gravel roads and some singletrack. Wider tires, or a gravel/cyclocross bike, would be beneficial for this route.

What are the best times of year to cycle this loop?

The best time to cycle this loop is generally between April and October. During these months, the weather is more favorable, and you might even spot ospreys around Llyn Brenig between April and August. Winter cycling conditions can be challenging due to the exposed moorland.

Are dogs allowed on the Ruthin & Llyn Brenig loop?

While specific regulations for this entire loop aren't detailed, many public rights of way in the area are dog-friendly. However, around Llyn Brenig and in nature reserve areas, dogs should generally be kept on a lead to protect wildlife and livestock. Always follow local signage.

Are there any permits or fees required to cycle in the Clwydian Range and Dee Valley?

Generally, there are no specific permits or entrance fees required for cycling on public rights of way within the Clwydian Range and Dee Valley Area of Outstanding Natural Beauty. However, always respect private land and follow any local regulations or signage.

What notable sights or landmarks will I encounter along the way?

You'll pass several interesting points, including the historic Denbigh Castle Ruins, the charming Ruthin Town Centre, and the impressive Llyn Brenig Dam. The route also includes the Cairn Ben Lloyd Singletrack for an exhilarating section.

Are there places to eat or get refreshments on the route?

Yes, you'll find amenities in Denbigh and Ruthin. A key stop along the route is the Llyn Brenig Café & Visitor Centre, which offers refreshments and facilities. It's always a good idea to carry sufficient water and snacks, especially for the more remote sections.

What wildlife might I see while cycling around Llyn Brenig?

The area around Llyn Brenig is rich in wildlife. You might spot deer, otters, red squirrels, badgers, grouse, and buzzards. Between April and August, ospreys are a notable sight. The northern end of the lake is a nature reserve, offering prime viewing opportunities.

Does this route connect with other cycling trails?

Yes, this route incorporates sections of several official trails. You'll find yourself on parts of Ride North Wales, Ride the Clwyds, and the Brenig Way, among others. It also briefly touches upon the proposed National Cycle Route 84.

What's an insider tip for tackling this challenging route?

Given the significant elevation and varied terrain, consider starting early to allow ample time, especially if you plan to stop at highlights like the Llyn Brenig Visitor Centre. Packing layers is also wise, as the exposed moorland can be windy and weather can change quickly.

What should I bring for a touring cycling trip on this loop?

For this challenging touring cycling loop, you should bring a well-maintained bike suitable for varied terrain (gravel or cyclocross bikes are ideal), plenty of water and snacks, appropriate cycling attire for changing weather, a repair kit, and a fully charged phone with the route downloaded.

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