4.9
(9)
177
hikers
12
hikes
Mountaineering around Llyn Ogwen is characterized by dramatic landscapes and challenging terrain within Snowdonia National Park. The region is flanked by the Carneddau and Glyderau ranges, featuring iconic peaks such as Tryfan, Glyder Fach, Glyder Fawr, and Pen yr Ole Wen. This area is defined by rugged, rocky terrain, steep-sided valleys, and glacial lakes like Llyn Ogwen and Llyn Idwal. The Ogwen Valley offers a diverse environment for various mountaineering experiences.
Last updated: May 11, 2026
35
hikers
6.88km
03:35
610m
610m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
10
hikers
3.80km
02:44
550m
550m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5
hikers
8.65km
04:03
760m
760m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4
hikers
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
24
hikers
7.22km
03:10
580m
580m
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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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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Llyn Ogwen is a wonderful place - just avoid it at all costs on Bank Holiday weekends!!
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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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There are over 10 distinct mountaineering routes available around Llyn Ogwen, offering a range of challenges within the dramatic landscapes of Snowdonia National Park. The komoot community has explored these routes over 290 times, highlighting their popularity.
While many routes in Llyn Ogwen are challenging, there are options for those newer to mountaineering. For instance, the region offers routes that provide stunning views without requiring the most strenuous summit climbs, such as the Llyn Ogwen circular walk mentioned in regional context. Always check the difficulty grade for specific tours on komoot.
Mountaineering routes around Llyn Ogwen are characterized by rugged and dramatic terrain. You can expect rocky peaks, steep-sided valleys, and glacial features. The area is flanked by the Carneddau and Glyderau ranges, offering diverse landscapes from challenging scrambles to demanding summit ascents.
Yes, Llyn Ogwen is renowned for its challenging ascents and scrambles. Routes like the Tryfan Scramble – Tryfan Summit loop from Tryfan and the Bristly Ridge – The Cantilever Stone loop from Tryfan are considered difficult and require good fitness and sure-footedness. The Glyderau horseshoe is also a challenging and rewarding journey.
Yes, several car parks are available around Llyn Ogwen, though they can fill up quickly during peak times. Ogwen Visitor Centre and Snack Bar is a key hub with parking, and there's also a Free Parking Area in Eryri National Park nearby.
The A5 road runs alongside Llyn Ogwen, providing convenient access. While specific bus routes aren't detailed in our data, public transport options to the Ogwen Valley are generally available, connecting to larger towns in Snowdonia. It's advisable to check local bus schedules for the most current information.
Yes, many of the mountaineering routes around Llyn Ogwen are designed as loops, allowing you to start and finish at the same point. Examples include the Pen Yr Ole Wen – Carnedd Llewelyn Summit loop from Tryfan and the Tryfan Summit – The Cantilever Stone loop from Tryfan. The Llyn Ogwen circular walk also offers great views.
The Llyn Ogwen area is rich in natural beauty and landmarks. You'll encounter glacial lakes like Llyn Ogwen and Llyn Idwal, dramatic waterfalls such as the Ogwen Falls (Rhaeadr Ogwen), and iconic peaks like Tryfan, Glyder Fach, and Glyder Fawr. The Castell Fawr rock formation is another notable sight.
While many mountaineering routes are challenging, the Llyn Ogwen area offers diverse experiences. For families, accessible lakeside paths around Llyn Ogwen and Llyn Idwal provide a less strenuous way to enjoy the stunning scenery. The Ogwen Visitor Centre is a good starting point for information on easier walks.
The mountaineering routes in Llyn Ogwen are highly rated by the komoot community, with an average score of 4.8 stars. Reviewers often praise the dramatic landscapes, the challenging and rewarding ascents, and the panoramic views from the summits of peaks like Tryfan and the Glyderau.
The best time for mountaineering in Llyn Ogwen is typically during the warmer, drier months from late spring to early autumn (May to October). During winter, conditions can become very challenging with snow, ice, and shorter daylight hours, requiring specialized equipment and experience.
Dogs are generally welcome on trails in Snowdonia National Park, including around Llyn Ogwen. However, it's crucial to keep dogs under close control, especially in areas with livestock or ground-nesting birds. Always follow the Countryside Code and be mindful of other users and wildlife.


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