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Routes
Running Trails
United Kingdom
Wales
North Wales
Conwy

Llyn Cowlyd

The best running trails around Llyn Cowlyd

4.5

(35)

3,081

runners

136

runs

Jogging routes around Llyn Cowlyd offer a diverse range of running experiences within the Snowdonia National Park. The region is characterized by its rugged mountainous terrain, deep valleys, and the expansive Llyn Cowlyd reservoir itself. Runners can expect trails that traverse open moorland, ascend challenging hills, and wind through areas with varied elevation changes. The landscape provides a natural setting for both demanding trail runs and more accessible paths.

Best jogging routes around Llyn Cowlyd

  • The most popular jogging route…

Last updated: May 11, 2026

3

runners

#1.

Eigiau Valley Gravel Road – Eigiau Dam Ruins loop from Cwm Eigiau Cottage

11.4km

01:36

450m

450m

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

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Hard

5.0

(1)

84

runners

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

Hard
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Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

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

Hard

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

Hard
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Popular around Llyn Cowlyd

Hiking around Llyn Cowlyd

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Tips from the Community

Clive G
October 10, 2025, Moel Siabod Summit

A wonderful isolated peak with fine views.

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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.

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There are fantastic views of Snowdonia from the top of Moel Siabod, but the weather must be clear. From the top it is possible to see 13 of the 14 highest peaks in Wales on a clear day without turning your head.

Translated by Google

12

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Moel Siabod is a lonely mountain in Snowdonia, with a trigonometric point of almost 900 metres, above Betws-y-Coed and Capel Curig. The routes up can be easily varied to suit different needs and abilities, and are always beautiful, with views of 13 of the 14 highest peaks in Wales from the summit on a clear day – without turning your head! Good parking and a café at the foot make Moel Siabod a great day out every time. (Ordnance Survey)

Translated by Google

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perfect place to take rest and enjoy the lake view!

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avoid on bank holidays

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Grace Mulligan
November 22, 2024, Llyn Crafnant

This is a serene lake located in the Conwy Valley surrounded by forested hills and the rugged landscape of Snowdonia. There's a cafe and fishery further south along the lake which is a lovely place to stop and refuel.

2

0

Go through the tunnel, mind your head, don't be scared. you'll come out in to a small quarry in the side of the rock with old collapsed out buildings. such a weird little find.

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Frequently Asked Questions

What is the overall difficulty level of running routes around Llyn Cowlyd?

The running routes in the Llyn Cowlyd area offer a wide range of difficulties. You'll find options from easy paths suitable for beginners to very challenging trails for experienced runners. Out of approximately 140 routes, about 7 are considered easy, 53 are moderate, and 80 are difficult, reflecting the rugged mountainous terrain of Snowdonia National Park.

What are the typical distances and durations for running trails in the Llyn Cowlyd area?

Running trails around Llyn Cowlyd vary significantly in length and time. For example, the Moel Siabod from Capel Curig trail running loop is about 11.5 km (7.2 miles) and takes around 2 hours. A shorter, moderate option like the Crimpiau from Capel Curig trail running loop is 6.4 km (3.9 miles) and can be completed in under an hour. Longer routes, such as the Llyn Crafnant – Llyn Geirionydd loop from Capel Curig, stretch to nearly 16 km (9.8 miles).

Are there any circular running routes available in the Llyn Cowlyd region?

Yes, many of the running routes around Llyn Cowlyd are circular, allowing you to start and finish in the same location. Popular examples include the Moel Siabod from Capel Curig trail running loop and the Crimpiau from Capel Curig trail running loop. These loops are great for exploring the diverse landscapes without needing to retrace your steps.

What kind of terrain can I expect on the running trails around Llyn Cowlyd?

The terrain around Llyn Cowlyd is characteristic of Snowdonia National Park, featuring rugged mountainous fells, open moorland, and deep valleys. You'll encounter varied surfaces, from rocky paths and grassy tracks to forest sections. Expect significant elevation changes on many routes, offering both challenging ascents and rewarding descents.

What do other runners enjoy most about the trails in Llyn Cowlyd?

The running trails in Llyn Cowlyd are highly rated by the komoot community, with an average score of 4.5 stars from over 30 reviews. Runners frequently praise the stunning panoramic views, the tranquility of the lakes, and the diverse natural beauty of the mountainous landscape. The variety of routes, catering to different fitness levels, is also a common highlight.

Are there any easy running routes suitable for beginners or those looking for a less strenuous run?

While many routes in Llyn Cowlyd are challenging, there are easier options available. Approximately 7 of the 140 routes are classified as easy. These typically feature less elevation gain and more forgiving surfaces, making them ideal for beginners or a more relaxed run. Look for routes closer to the valley floors or around the smaller lakes for gentler gradients.

What are some challenging running routes for experienced trail runners in the Llyn Cowlyd area?

Experienced trail runners will find plenty of challenging options. The Moel Siabod from Capel Curig trail running loop is a popular choice, known for its significant elevation gain and demanding terrain. Another challenging option is the Llyn Crafnant – Llyn Geirionydd loop from Trefriw, which covers a substantial distance with notable climbs.

Is public transport available to access the running trails around Llyn Cowlyd?

Access to the Llyn Cowlyd area, particularly trailheads like Capel Curig, is possible via local bus services within Snowdonia National Park. These services connect to larger towns such as Betws-y-Coed and Bangor, which have train stations. It's advisable to check current timetables, especially for routes that might have limited services.

Are there any pubs or cafes near the running routes for refreshments?

Yes, the villages surrounding Llyn Cowlyd, such as Capel Curig and Betws-y-Coed, offer a selection of pubs and cafes. These establishments are popular with outdoor enthusiasts and provide opportunities for refreshments and meals before or after your run. You'll find traditional Welsh pubs and cozy cafes serving hot drinks and snacks.

What is the best time of year to go running in Llyn Cowlyd?

The best time to run in Llyn Cowlyd is generally from late spring to early autumn (May to October) when the weather is milder and daylight hours are longer. However, the region's beauty can be enjoyed year-round. Winter running offers dramatic landscapes but requires appropriate gear for potentially cold, wet, and icy conditions, especially at higher elevations.

Are the running routes around Llyn Cowlyd dog-friendly?

Many trails in Snowdonia National Park, including those around Llyn Cowlyd, are dog-friendly. However, it's crucial to keep dogs under close control, especially in areas with livestock or ground-nesting birds. Always follow the Countryside Code, keep dogs on a lead where required, and clean up after them to preserve the natural environment.

Are there any running routes that pass by interesting landmarks or points of interest?

While the primary attraction is the natural landscape, many routes offer views of significant features. The Llyn Cowlyd reservoir itself is a prominent landmark. Trails often provide panoramic vistas of the surrounding Snowdonia peaks, deep valleys, and other tranquil lakes like Llyn Crafnant and Llyn Geirionydd, which are featured in routes such as the Llyn Ogwen and Ogwen Obelisk – Llyn Crafnant loop from Trefriw.

Most popular routes around Llyn Cowlyd

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