A challenging tour of the some the highest mountains in Wales, this Carneddau Walk has breathtaking views and amazing ridge walks.

The route begins at Llyn Ogwen, summiting Pen Yr Ole Wen first before following the valley bowl around to Carnedd Dafydd and then Carnedd Llewelyn.

The descent along Bwlch Eryl Farchog and view of Ffynnon Llugwy is a sublime finisher, with some cheeky views of Tryfan right at the very end.

Distance 9.6 miles

Time 5 hours walking

Total Ascent 3,385ft

OS Maps click to open this route on the OS Maps website

Summits Tryfan (917.5m)

Views Ogwen Valley, the Glyderau, the Carneddau, Llyn Boclwyd, Llyn Idwal, Llyn Ogwen, Ffynnon Lloer, Ffynnon Llugwy.

Full walk through video of the entire route



Carneddau Walk from Llyn Ogwen 3D Map



1. We park halfway along Llyn Ogwen to start this wander, allowing a short distance for the legs to warm up (and a loo stop at Ogwen Visitor Centre) before crossing the roman bridge stile and ascending Pen Yr Ole Wen. This steep path continues upwards in a fairly straight line, retaining valley views on both sides (with Tryfan to the right at all times).


2. The stone circle near Pen Yr Ole Wen summit is a good place for a coffee break, then it’s head around the Lloer valley bowl to Carnedd Dafydd, where there are multiple stone circles to pick a spot and enjoy the views.


3. Continuing along the ridge we eventually reach Carnedd Llewelyn, the highest point of the walk at 3,400ft and the second highest mountain in Wales. From Llewelyn we head east down the Bwlch Eryl Farchog ridge, bearing right down to Ffynnon Llugwy reservoir just before the path rises towards the summit of Pen Yr Helgi Du.


4. Corporation Road is a long straight tarmac downhill back to the main A5 road, where we cross over at the campsite and join the Eryri footpath all the way to the north face of Tryfan, and around to the find the car by Llyn Ogwen.





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