High Carneddau Mountain Hike

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Mountain Walks
Apr 27

7 people attending

5 places left

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Long (17.5km), High (1,150m elevation gain) and 3 scrambles (of which none are overly technical but all require a head for heights and care)

This is a wonderful, full days' walk across the High Carneddau taking in 3 of the 14 highest mountains (over 3,000 feet) in North Wales.

Our route follows the river from our start point in Ogwen valley to Ffynnon Loer lake (translates into English as 'Well of the Moon') then a scramble up Pen yr Ole Wen (978m). 

From the top of Pen yr Ole Wen, we will traverse over the top of the Carneddau, this being the largest continuous area above 2,500 feet high in England or Wales. The rewards and views come quick and fast and we will take an hour or two crossing this mostly easy traverse with plenty of opportunity therefore to enjoy all that a mountain walk can offer.

We take in the peaks of Carnedd Fach (964m), Carnedd Dafydd (1,044m) and Carnedd Llewelyn which at 1,064m (3,425 ft) is second only to Snowdon for being the highest mountain in Wales.

It just keeps getting better though as we then start to descend via a shorter but more rugged scramble down Craig yr Ysfa, and then onto our final climb and easy scramble for the day - up Pen yr Helgi Du (836m).  

It's all down hill from here but the easy (if boggy at times) descent gives an opportunity to enjoy the views across the valley to Tryfan and its famous North Ridge and the Glyderau range beyond whilst reflecting on a day well spent in the mountains.

A voracious appetite and good night's sleep will certainly await after the walk, and hopefully a sense of satisfaction and a desire for more in the future.



Distance 17.5Km (11 miles).  Elevation Gain 1,150 m (3,800 feet). 3 Very steep / scramble sections (grade 1 or less with some exposure).

This is a substantial and full-on day out in the mountains.  A good level of fitness and previous experience of at least hill walking and preferably mountain walking, together with a head for heights is necessary to enjoy the day.  At a steady and reasonable pace, this walk should take about 8 hours, allowing a total of 60 minutes for breaks throughout the day.  


Weather conditions

The walk may need to be changed or postponed in event of extreme weather conditions.



Please see the kit list for full details.  Food and plenty of water (2 to 3 litres is my suggestion especially if weather is warm / dry).   Waterproof / Windproofs essential. Hat, gloves.  

It is a a good idea to bring sunglasses, sunhat and suncream too just in case; there is absolutely no shade anywhere on this walk if the sun is out and UV light from the sun is quite a bit stronger at higher altitudes.



This walk is not suitable for dogs with some possible exceptions.  

Whilst dogs are normally welcome on my walks, the scrambles on this walk make it unsuitable for most dogs.  The possible exception is if you and your dog are experienced at scrambling and climbing in the mountains, in which case, please contact the leader before the event to discuss. I will be leaving both my dogs at home for this one though.


New Members

Please feel free to join this as your first OutdoorLads event. If you have any questions then feel free to message the event leader (click on leaders name below, then send a message), or go to the "My First Event" section under "About Us".


Image / photo credits:  All leader's own images - with permission for OutdoorLads to use and reuse


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