4.6
(45)
3,731
runners
131
runs
Jogging around Llynau Mymbyr offers a variety of running routes through the heart of Snowdonia. The region is characterized by its glacial lakes, surrounding hills, and the prominent peak of Moel Siabod. Running trails often feature mixed terrain, including lakeside paths and ascents into the higher fells.
Last updated: April 25, 2026
35
runners
20.1km
03:02
800m
800m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
3.0
(1)
45
runners
16.6km
02:18
660m
660m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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22
runners
6.64km
00:48
150m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
14
runners
19.4km
02:13
320m
320m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
6
runners
15.7km
02:12
640m
630m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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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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Here you have a great view of Tryfan, a mountain in the Ogwen Valley in Snowdonia. It is part of the Glyderau Group and is one of the most recognisable peaks in Britain, with a classic pointed shape and rugged rocks. At 917.5 metres above sea level, it is the fifteenth highest mountain in Wales. (Wikipedia)
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Straight ahead over the bridge is the path to Cwm Idwal, but take time to see the waterfall and rapids on the River Idwal. Very pretty.
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Straight ahead over the bridge is the path to Cwm Idwal, but take time to see the waterfall and rapids on the River Idwal. Very pretty.
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There are over 130 running routes mapped around Llynau Mymbyr on komoot, catering to various fitness levels and preferences. This includes a mix of easy, moderate, and difficult trails.
Yes, Llynau Mymbyr offers several easier running options. While many routes involve significant elevation, there are at least 6 routes classified as easy. These typically stick to lakeside paths or less steep terrain, providing a gentler introduction to running in the area.
Running routes around Llynau Mymbyr vary significantly. You'll find shorter loops, like the Bridge Over Llyn Mymbyr – Bryn Brethynau Barn loop from Capel Curig at 4.1 miles (6.6 km) which takes about 45-50 minutes, to longer, more challenging runs such as the Plas-y-Brenin Outdoor Centre loop from Capel Curig, which is 10.2 miles (16.4 km) and can take over 2 hours.
Yes, many of the running routes in the Llynau Mymbyr area are circular, allowing you to start and finish at the same point. For example, the Llyn Mymbyr – Bridge Over Llyn Mymbyr loop from Capel Curig is a popular circular option.
The terrain around Llynau Mymbyr is diverse, reflecting its Snowdonia location. You can expect a mix of well-maintained lakeside paths, gravel tracks, and more rugged, rocky sections, especially on routes that ascend into the fells. Some trails may also involve boggy ground, particularly after rain.
While many routes are challenging, there are family-friendly options, especially those sticking to the flatter sections around the lakes. Look for routes marked as 'easy' or 'moderate' with shorter distances if running with children. Always check the route details for elevation gain and terrain before heading out.
Most trails in the Llynau Mymbyr area are dog-friendly, but it's crucial to keep dogs under close control, especially near livestock. Some areas may require dogs to be on a lead. Always follow the Countryside Code and be mindful of other trail users and wildlife.
Capel Curig serves as a central hub for many routes around Llynau Mymbyr and offers various parking options, including designated car parks. Specific parking details are often provided within individual komoot route descriptions, so it's best to check the starting point of your chosen trail.
The Llynau Mymbyr area is renowned for its stunning scenery. Many routes offer panoramic views of the glacial lakes themselves, as well as iconic peaks like Moel Siabod and the Snowdon massif. The Nant Bochlwyd Waterfall – View of Tryfan loop from Capel Curig, for instance, provides views towards Tryfan and features a waterfall.
Spring and autumn often offer the most pleasant running conditions with cooler temperatures and beautiful scenery. Summer can be warm, but also popular. Winter running is possible but requires appropriate gear for potentially cold, wet, or icy conditions, especially on higher ground.
Capel Curig, located at the eastern end of Llynau Mymbyr, is a good place to find facilities. It has cafes, pubs, and outdoor centres where you can refuel or find amenities before or after your run. The Plas-y-Brenin Outdoor Centre is a common starting point for many routes.
The running routes in Llynau Mymbyr are highly rated by the komoot community, with an average score of 4.6 stars from over 45 reviews. Runners frequently praise the stunning mountain and lake views, the variety of terrain, and the sense of adventure offered by the trails.


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