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United Kingdom
Wales
North Wales
Conwy

Llyn Dulyn

The best running trails around Llyn Dulyn

4.5

(33)

2,834

runners

122

runs

Jogging routes around Llyn Dulyn traverse the remote Carneddau mountain range in Snowdonia, North Wales. The region is characterized by dark waters surrounded by high, steep cliffs and rugged mountain terrain, offering a sense of wild remoteness. Trails lead past remote reservoirs and through valleys, with the imposing Carneddau crags always in view. This area provides a diverse network of paths for various fitness levels, from moderate lakeside runs to more strenuous mountain ascents.

Best jogging routes around Llyn Dulyn

Last updated: June 24, 2026

4

runners

#1.

View of Llyn Dulyn – Dulyn Bothy loop from Dolgarrog

9.13km

01:04

300m

300m

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required.

Hard
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Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

Hard

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Llyn Dulyn

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Tips from the Community

David
May 6, 2026, View of the Pyg Track and Lakes in Snowdonia National Park

planned to take this route but parking is scarce, so be careful

3

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Clive G
April 7, 2026, Pen y Waun Wen

A fine scrambly route to Carnedd Llewelyn!

1

0

testy test test test

0

0

one thee three two three four gicea asdasda ss

0

0

A very fine mountain that is the high point of the Carneddau range. These mountains are high, remote and so much quieter than the Glyderau or Snowdon. Fabulous walking country.

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Clive G
October 14, 2025, Carnedd Llewelyn

Carnedd Llewelyn is high and relatively remote, so walks there are quite a serious undertaking.

1

0

Clive G
October 10, 2025, Moel Siabod Summit

A wonderful isolated peak with fine views.

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0

Clive G
October 10, 2025, Moel Siabod Summit

Moel Siabod is a terrific viewpoint as it is isolated from the other main peaks of Eryri. On the day I climbed it I was fortunate to experience an inversion, where the clouds form a layer below the summit.

0

0

Frequently Asked Questions

How many running trails are available around Llyn Dulyn?

There are over 100 dedicated running routes in the Llyn Dulyn area, offering a wide range of options for different fitness levels. You'll find everything from moderate lakeside paths to challenging mountain ascents.

What makes jogging around Llyn Dulyn unique?

The Llyn Dulyn area is characterized by its dramatic, rugged mountain scenery within the Carneddau range. You'll experience dark, brooding lake waters surrounded by high, steep cliffs, remote reservoirs, and open moorland. The sense of wild remoteness and the chance to spot distinctive Carneddau Ponies make for a truly inspiring run.

Are there easy or beginner-friendly jogging routes in the Llyn Dulyn region?

Yes, while many routes are challenging, there are around 10 easier trails suitable for beginners or those looking for a less strenuous run. These often include moderate lakeside walks with clear paths, allowing you to enjoy the scenery without significant elevation gain.

What are some of the more challenging running routes near Llyn Dulyn?

For experienced runners seeking a challenge, the region offers many difficult routes. Examples include the Pen Yr Ole Wen – Carnedd Llewelyn loop from Capel Curig, a 21.4-mile trail with extensive mountain views, or the Llyn Mymbyr – Moel Siabod summit loop from Capel Curig, which features significant elevation gain and panoramic vistas.

Are there any circular running routes in the Llyn Dulyn area?

Yes, the area is well-suited for circular runs. Popular options include the Yellow Lake – Dulyn Reservoir loop, a moderate 5.8-mile trail, and other circular walks that allow you to explore the stunning landscapes without retracing your steps. Many of komoot's routes are designed as loops for convenience.

What natural features or landmarks can I see while running in Llyn Dulyn?

You'll encounter several striking natural features. The dark waters of Llyn Dulyn itself are a highlight, surrounded by high cliffs. Trails often pass by remote reservoirs like Llyn Melynllyn and follow the Afon Dulyn. The area is also known for the Dulyn Bothy, a simple mountain shelter, and its poignant history as 'The Aviators Graveyard' due to past WWII plane crashes.

Is Llyn Dulyn a good place for dog-friendly running?

Yes, Llyn Dulyn is generally dog-friendly, offering vast open spaces and trails. However, as it's a mountainous region with livestock (including the Carneddau Ponies), it's crucial to keep dogs under close control, preferably on a lead, especially near grazing animals or during lambing season. Always follow the Countryside Code.

What do other runners say about the trails around Llyn Dulyn?

The running trails in Llyn Dulyn are highly rated by the komoot community, with an average score of 4.6 stars from around 30 reviews. Runners often praise the wild, remote beauty, the challenging ascents, and the peaceful, less crowded experience compared to other parts of Snowdonia.

When is the best time of year to go jogging in Llyn Dulyn?

Spring, summer, and early autumn generally offer the most pleasant conditions for jogging, with longer daylight hours and milder weather. However, the region's weather can be unpredictable, so always be prepared for changing conditions. Winter runs are possible but require appropriate gear and experience due to potential snow, ice, and shorter days.

Are there any routes that feature waterfalls near Llyn Dulyn?

While Llyn Dulyn itself is known for its lake and mountain scenery, the wider Carneddau range includes impressive waterfalls. For example, the Carnedd Llewelyn – Carnedd Dafydd loop from Aber Falls is a challenging route that starts near the famous Aber Falls, offering a chance to combine mountain running with a visit to this natural spectacle.

What are the options for parking when accessing running trails around Llyn Dulyn?

Parking options vary depending on your chosen starting point. Many trails, especially those leading into the Carneddau, have designated parking areas or lay-bys at trailheads. It's advisable to research specific route starting points on komoot for detailed parking information, as some remote spots may have limited facilities.

Can I reach the Llyn Dulyn running trails using public transport?

Access to the more remote Llyn Dulyn trails by public transport can be limited. However, some routes, particularly those starting from larger villages like Capel Curig, may be accessible via local bus services within Snowdonia. Planning your route in advance and checking local transport schedules is recommended.

Are there any routes suitable for families with children who enjoy running?

For families, the moderate lakeside paths and less strenuous circular routes are generally more suitable. These trails offer a chance to enjoy the stunning scenery without the demands of steep mountain ascents. Always check the route's distance and elevation profile on komoot to ensure it matches your family's ability.

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