logo Walking Britain

Snowdonia Walk
Y Garn & Carnedd y Filiast from Ogwen Cottage

Nat Park - Snowdonia - Glyders Tryfan

County/Area - Gwynedd

Author - Lou Johnson

Length - 8.5 miles / 13.8 km    Ascent - 3300 feet / 1000 metres

Time - 7 hours 30 minutes    Grade - hard

Start - OS grid reference SH649603
Lat 53.122704 // Long -4.020341
Postcode LL57 3LZ (approx. location only)
what3words start dogs.cheerily.myself

Maps Ordnance Survey Logo Anquet Maps Logo

Ordnance Survey Explorer OL17Sheet Map1:25kBUY
Anquet OS Explorer OL17Digital Map1:25kBUY
Ordnance Survey Landranger 115Sheet Map1:50kBUY
Anquet OS Landranger 115Digital Map1:50kBUY

It is recommended you take a map. The preferred scale is 1:25k.

Walk Route Description

Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage Photo from the walk - Y Garn & Carnedd y Filiast from Ogwen Cottage
Click thumbnails for larger images.

An ascent of Y Garn by itself is a rewarding experience but combined with a high level route, which overlooks Nant Francon, it becomes a high quality walk. This Snowdonia walk does involve a rough descent and is not for walkers who prefer clear paths. You could, of course, retrace your steps and convert the route to an out and back walk. The start is at Ogwen Cottage on the A5 Bangor to Capel Curig road (grid ref. SH649603) where there is a small car park and refreshment kiosk.

Take the signed footpath to Llyn Idwal, which initially sets off in a south-easterly direction but soon turns south-west. The path has recently been improved and you soon reach the footbridge over the outlet from Llyn Idwal. Situated in a superb Cwm this lake is one of the "gems" of Snowdonia. Cross the footbridge and follow the northern shore of the lake. Leave the shore path and take the obvious route heading almost due west to begin the ascent of Y Garn.

The climb to the summit of Y Garn is described in greater detail in Walk 1186 which would offer a viable alternative if you were short of time or if the weather deteriorated. Assuming you have reached Y Garn's airy summit, you need to descend north keeping to the edge of the crags, which are on your right hand side. The going is easy and on reaching a col you start the ascend once more to reach Foel-goch, which is also blessed with a superb summit with crags dropping steeply to the floor of nant Francon.

Another descent and ascent northwards bring you to Mynydd Prefedd. This is a less dramatic summit but it offers great views especially to Elidir Fawr. The final section of the high level route includes a section along the edge of the amazing "Atlantic Slab", which is a steeply inclined rock face.

On reaching the final summit, Carnedd y Filiast, you have completed the high level section. The descent into the valley is rough and largely without a path. Care needs to be exercised that you locate the route and it is suggested you leave the cairn on a bearing of 75 degrees. At first the going is quite easy but as you descend the going gets rougher especially when the vegetation is high. The OS map shows a sheepfold (grid ref. 626634) and this provides a useful point to aim for. From here you descend over rough ground to reach the road (grid ref. 630637) just to the north of Tai-newyddion.

All that remains is a pleasant section of ro along the valley with an excellent view ahead especially as you get nearer to Ogwen Cottage. Passing Blaen-y-nant on your left you are rewarded with a superb view with the falls in valley and the high mountains providing a magnificent backdrop.



Other walks nearby

Walk 1088 The Traverse of the Glyder Ridge from Ogwen - hard - 5.5 miles/8.9 km

Walk 1186 Y Garn from Ogwen Cottage (Route A) - mod/hard - 4.5 miles/7.3 km

Walk 3062 Pen yr Ole Wen from the Ogwen Valley - moderate - 5.0 miles/8.1 km

Walk 2417 A Glyderau trio: Glyder Fach, Glyder Fawr and Tryfan - mod/hard - 6.5 miles/10.6 km

Walk 1137 Y Garn from Ogwen Cottage (Route B) - mod/hard - 4.5 miles/7.3 km

Walk 2680 A circuit of Llyn Idwal from Ogwen Cottage - easy - 2.8 miles/4.6 km

Walk 2650 Tryfan, the Glyderau and Y Garn - very hard - 8.0 miles/13 km

Walk 2820 Carneddau traverse from Llyn Ogwen to Bont Newydd - mod/hard - 14.0 miles/22.8 km

Walk 1150 The High Carneddau from the Ogwen Valley - hard - 10.0 miles/16.3 km

Walk 1215 Tryfan & Llyn Ogwen from the Ogwen Valley - mod/hard - 5.5 miles/8.9 km

Recommended Books & eBooks

Snowdonia: 30 Low-level and easy walks - South

Snowdonia: 30 Low-level and easy walks - SouthGuidebook describing 30 walks in Snowdonia, Wales. Routes are mostly low level and on clear paths and showcase the region's beautiful scenery and rich history and culture. Part of a 2-volume set, this southern volume includes Trawsfynydd, Bala, Dolgellau, Machynlleth, the Harlech Coast and the valleys of the Mawddach and Dyfi.
More information

Snowdonia: 30 Low-level and easy walks - North

Snowdonia: 30 Low-level and easy walks - NorthGuidebook describing 30 walks in Snowdonia, Wales. Routes are mostly low level and on clear paths and showcase the region's beautiful scenery and rich history and culture. Part of a 2-volume set, this northern volume includes the Snowdon area, the Ogwen and Conwy Valleys, Betws-y-Coed, Beddgelert, Ffestiniog and the coast.
More information

The End to End Trail

The End to End Trail
More information

Social Media

Follow Walking Britain for the latest news.

Facebook Twitter

CBD For Walking & Hiking

Discover the benefits of CBD for walkers and hikers. More info.

Mountain Weather

Stay safe on the mountains with detailed weather forecasts - for iOS devices or for Android devices.

Digital Mapping Guide

Digital Mapping Guide - a simple guide of how to start using digital mapping. Includes advice and useful links.