5.0
(2)
104
hikers
11
hikes
Mountaineering routes around Llynau Mymbyr are set within the dramatic landscapes of Eryri National Park (Snowdonia), offering challenging terrain and significant elevation gains. The region is characterized by rugged mountain scenery, including views of the Snowdon Horseshoe and prominent peaks like Moel Siabod. Micro crags also provide technical climbing options, complementing the larger mountain ascents. These features combine to create a diverse environment for experienced mountaineers.
Last updated: August 17, 2026
10
hikers
8.48km
03:47
580m
580m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
36
hikers
6.74km
03:34
610m
610m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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21
hikers
6.75km
03:02
560m
560m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
9
hikers
14.4km
05:13
660m
660m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.0
(2)
12
hikers
3.70km
02:42
550m
550m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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Huge angled boulder that you can see from the valley below. It can be climbed with care, but is polished these days.
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Rhaeadr Idwal is the scenic waterfall formed as the outflow of Llyn Idwal tumbles toward the Ogwen Valley. Cascading over ancient volcanic rock, it is a highlight of the approach path from Ogwen Cottage. Nearby, the Devil’s Appendix plunges 93 meters down the cliffs of Twll Du, making it the tallest single-drop waterfall in Wales. These falls are most dramatic after heavy rain or when frozen into spectacular ice columns in winter.
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See this write up - https://www.komoot.com/tour/2449300285 It explains why this route is so good.
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This route is so much fun - and is part of what is probably the best grade 1 scramble in Snowdonia.
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The south ridge is the easier way to reach the top of Tryfan, but it still has it's moments near the top.
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The mountaineering routes in the Llynau Mymbyr area are predominantly challenging. Out of 28 available tours, 24 are rated as difficult, with the remaining 4 being moderate. This region is best suited for experienced mountaineers seeking significant ascents and rugged terrain.
While the Llynau Mymbyr area is known for its challenging routes, there are a few moderate options available for those looking to build experience. For example, the region offers routes that, while still requiring good fitness and sure-footedness, might not involve the same level of technical difficulty as the more advanced scrambles. Plas y Brenin, the National Outdoor Centre, also offers courses for various skill levels, which can be a great way to gain experience.
Eryri National Park (Snowdonia) is generally dog-friendly, but it's crucial to keep dogs on a lead, especially in areas with livestock or ground-nesting birds. Some routes may involve scrambling or steep sections that could be difficult for dogs. Always check specific route details and ensure your dog is fit enough for the terrain. Remember to clean up after your pet.
Mountaineering routes around Llynau Mymbyr offer breathtaking views of the Snowdon Horseshoe, including peaks like Grib Goch, Crib y Ddysgl, Snowdon (Yr Wyddfa), and Lliwedd. The summit of Moel Siabod, accessible via routes like Llyn-y-Foel – Moel Siabod Summit loop from Capel Curig, provides panoramic vistas of 13 of Wales's 14 highest peaks on a clear day. The lakes themselves also offer iconic photographic opportunities with the mountains reflected in the water.
Yes, several routes in the area are circular, allowing you to start and finish in the same location. A popular example is the Llyn-y-Foel – Moel Siabod Summit loop from Capel Curig, which takes you to the summit of Moel Siabod and back. Another option is the challenging Tryfan Scramble – Tryfan Summit loop from Capel Curig.
The best time for mountaineering in Llynau Mymbyr is generally from late spring to early autumn (May to October) when weather conditions are more stable and daylight hours are longer. However, the weather in Snowdonia can be unpredictable year-round, so always be prepared for sudden changes. Winter mountaineering is possible but requires significant experience, appropriate gear, and knowledge of winter conditions.
Llynau Mymbyr is situated just outside Capel Curig, which is accessible by bus services within Snowdonia National Park. The A4086 road, which runs alongside the lakes, has various lay-bys for parking, but public transport can connect you to Capel Curig and other major trailheads. It's advisable to check local bus timetables in advance, especially for routes connecting to more remote starting points.
Plas y Brenin, the National Outdoor Centre located on the eastern bank of Llynau Mymbyr, offers accommodation and has a cafe bar open to the public. Additionally, the nearby village of Capel Curig provides various amenities, including pubs, cafes, and other accommodation options, making it a convenient base for your mountaineering adventures.
Yes, the Llynau Mymbyr area is renowned for its scrambling opportunities. The Tryfan Scramble – Tryfan Summit loop from Capel Curig is a classic and highly recommended route for experienced scramblers, involving hands-on climbing to reach the iconic Tryfan summit. Other challenging scrambles can be found on peaks within the Snowdon Horseshoe.
The mountaineering routes around Llynau Mymbyr are highly regarded by the komoot community, with an impressive average rating of 4.9 stars from over 40 reviews. Mountaineers frequently praise the dramatic mountain scenery, the challenging nature of the ascents, and the rewarding panoramic views from the summits.
Wild camping in Eryri National Park (Snowdonia) is generally not permitted without the landowner's express permission. While some areas might tolerate discreet wild camping, it's not officially allowed. There are designated campsites and accommodation options available in and around Capel Curig and the wider National Park. Always adhere to the 'Leave No Trace' principles if you do find a permitted spot.
A challenging route like the Llyn Llydaw – Snowdon Summit loop from Pen-y-Gwryd Hotel, which leads through high mountain passes and past glacial lakes, typically takes around 5 hours and 57 minutes to complete. This is a difficult route covering approximately 9.6 miles (15.5 km) and requires good fitness and preparation.
The Llynau Mymbyr area is easily accessible via the A4086 road, which runs alongside the lakes. There are various lay-bys along this road where you can park. Additionally, specific trailheads, such as those near Capel Curig or the Pen-y-Gwryd Hotel, often have dedicated parking facilities, though these can fill up quickly during peak season. Always check for parking restrictions and fees.


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