West Side Summits



Our Ogwen West Side Summits circular trail route takes in 5 of the biggest mountains in Wales, with 4,000ft of ascent and breathtaking views over 11 miles.

Starting and ending by the side of Llyn Ogwen, we usually combine both running and hiking to make the most of these incredible trails.

Distance 10.9 miles

Time 5 hours (walking) 2 hours (running)

Total Ascent 3,928ft

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

Summits Y Garn, Foel Goch, Mynydd Perfydd, Elidir Fawr, Carnedd Y Filiast

Views al the Ogwen Valley, Nant Ffrancon Pass, Snowdon Horseshoe, Llanberis, North Wales coastal views.


Ogwen West Side Summits 3D Map



1. We like starting this route about halfway down Llyn Ogwen, giving the legs a few minutes on level ground before heading up to Llyn Idwal past the Ogwen Valley visitor centre. Either side of Idwal leads to Devils Kitchen but the right hand (west) side is a little more picturesque and well worth catching early morning light.


2. Devils Kitchen leads up towards Glyder Fawr, levelling out to a small plateau with the lovely little lake Llyn Cwn. A clear path leads up the hill walk to Y Garn’s summit. The views of the valley are incredible from here, second only to the panorama from Pen Yr Ole Wen look back across. We descend from the top of Y Garn, keeping the drop on our right all the way to the summit of Foel Goch.


3. A short but steep scree path leads down from Foel Goch, then arcs around the Cwm Dudodyn valley and gradually rises to Elidir Fawr summit. We partially retrace our steps from here, heading back down Bwlch Y Marchlyn ridge with the reservoir way down on our left. As the path bears right towards Foel Goch we continue up left along Bwlch Y Brecan, still keeping the reservoir in view on the left, and eventually reach the summit of Mynydd Perfydd after two stiles.


4. The wander across to Carnedd Y Filiast is a welcome even ground break for the legs, and the stone circle shelter there is a great place to recover some energy before the last few miles of this trail route. A steep and narrow trail leads from the summit in a north westerly direction, reaching an unmarked road at the foot of the Nant Ffrancon valley. We simply follow this road for approx 3.5 miles back to Ogwen Valley visitor centre.





Y Garn January 2019 | thefrozendivide 3


Y Garn 23rd Feb | Featured Image | thefrozendivide copy





Video highlights of the whole trail route