4.9
(18)
235
hikers
16
hikes
Mountaineering around Llyn Llydaw offers challenging routes through a landscape shaped by glacial activity. The area features rugged peaks, steep scree slopes, and prominent ridges, characteristic of the Snowdonia National Park. Llyn Llydaw itself is a deep, dark lake nestled in a cwm, surrounded by the imposing slopes of Snowdon. The terrain demands experience and appropriate gear, with many routes involving significant elevation gain and exposure.
Last updated: July 8, 2026
5
hikers
17.7km
07:25
1,080m
1,080m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
8
hikers
13.7km
06:30
920m
920m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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4.5
(2)
8
hikers
19.6km
07:29
1,060m
1,060m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
9
hikers
14.3km
05:11
660m
660m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5
hikers
8.65km
04:03
760m
760m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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There are many, many ways up Yr Wyddfa (Snowdon), though the Watkin Path is one of the six trails officially recognised by the national park authority. It's a quieter option than the routes from Llanberis and Pen y Pass and also one of the most strenuous. It was also the first public footpath in the UK when it was inaugurated in 1892 by Prime Minister William Gladstone.
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Beginning of Watkins' path
5
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A wonderful spiky summit with fine views to Yr Wyddfa and into Ogwen Valley. The summit itself is a scramble over very large jumbled boulders.
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The best view to be had of these two lakes is from the Crib Goch, and they will be a long way below you.
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Whilst the Gribin may not be Tryfan North Ridge or Bristly Ridge, it is still a worthy part of this route.
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Here you climb to Y Lliwedd. A beautiful, uncrowded route.
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There are over 35 mountaineering routes around Llyn Llydaw, primarily catering to experienced mountaineers due to their challenging nature. Most routes are rated as difficult.
The mountaineering routes around Llyn Llydaw are predominantly difficult, with only a few rated as moderate. The terrain, characterized by rugged peaks and steep scree slopes, generally requires experience and appropriate gear. For easier options, you might consider exploring other areas within Snowdonia National Park.
The duration of mountaineering routes around Llyn Llydaw varies depending on the specific trail and your pace. For example, the challenging Garnedd Ugain Summit – Snowdon Summit loop from Pen-y-Pass typically takes around 7 hours 22 minutes to complete. Shorter, but still demanding, routes like The Cantilever Stone – Bristly Ridge loop from Pen-y-Pass can be completed in about 5 hours.
Common starting points for mountaineering routes around Llyn Llydaw include Pen-y-Pass and areas near Glyder Fawr. These locations typically offer parking facilities, though they can fill up quickly, especially during peak season. It's advisable to arrive early or consider public transport options.
While the mountaineering routes around Llyn Llydaw are generally difficult and not suitable for young children or inexperienced families, there are some less strenuous walking paths in the wider Snowdonia National Park that might be more appropriate. The immediate Llyn Llydaw area is characterized by challenging mountain terrain.
Dogs are generally welcome on public footpaths and bridleways in Snowdonia National Park, including many of the trails around Llyn Llydaw. However, it's crucial to keep dogs on a lead, especially near livestock, and to be mindful of the challenging terrain, which may not be suitable for all dogs. Always follow the Countryside Code.
The best time for mountaineering in Llyn Llydaw is typically from late spring to early autumn (May to October) when weather conditions are generally more stable, and daylight hours are longer. However, mountain weather can change rapidly at any time of year, so always be prepared for all conditions.
Given the difficult nature of the routes, essential gear for mountaineering in Llyn Llydaw includes sturdy hiking boots, waterproof and windproof clothing, a map and compass (or GPS device), sufficient food and water, a headlamp, and a first-aid kit. Depending on the season and specific route, ice axe and crampons may also be necessary.
Along the mountaineering routes, you'll encounter stunning natural beauty and historical sites. You can see the deep waters of Llyn Llydaw itself, and explore the fascinating Ruins of the Britannia Copper Mine at Llyn Llydaw. The Miners' Track is also a notable feature, offering historical context to the landscape.
Yes, there are several excellent circular mountaineering routes. A popular option is the Crib Goch – Garnedd Ugain Summit loop from Glyder Fawr, which includes the exposed Crib Goch ridge. Another challenging circular route is the Garnedd Ugain Summit – Snowdon Summit loop from Rocky Valley Halt.
The Llyn Llydaw area is highly rated by the komoot community, with an average score of 4.8 stars. Reviewers often praise the dramatic mountain scenery, the challenging nature of the routes, and the panoramic views from the summits, particularly those involving iconic ridges like Crib Goch.
While routes to Snowdon's summit can be very popular, exploring trails that focus on other peaks or less-frequented ridges might offer a quieter experience. For example, the Watkin Path – Snowdon Summit loop from Yr Wyddfa National Nature Reserve, while still leading to Snowdon, might offer different sections that are less congested than the main Pen-y-Pass routes at certain times.


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