Route outline for walk gw115:
Llyn Ogwen - Ogwen Cottage - Llyn Bochlwyd - Bwlch Tryfan - Bristly Ridge - The Cantilever Stone - Glyder Fach - Castell y Gwynt (Glyder Fach) - Bwlch y Ddwy-Glyder - Glyder Fawr - Llyn y Cwm - Twll Du (Devil's Kitchen) - Llyn Idwal - Ogwen Cottage - Pont Pen-y-benglog - Llyn Ogwen
Points of Interest/Notes on this walk:
Try and find time to have a look underneath Pont Pen-y-benglog (near Ogwen Cottage at the western end of Llyn Ogwen) where the remains of the original stone arched bridge built by Thomas Telford can be seen. Access the river bank is via a stile on NW side of the bridge.
Peaks, Summits and Tops reached on this walk:
![]() 2 Welsh Mountains |
![]() 0 Wainwrights |
![]() 3 Welsh Nuttalls |
![]() 0 Welsh Deweys |
![]() 0 Wainwright Outlying Fells |
![]() 1 Welsh Marilyn |
![]() 0 Bridgets |
Peak Bagging Statistics for this walk:
The highest point of this walk is Glyder Fawr at 999m (3279ft). Glyder Fawr is classified as a Welsh Mountain (Hewitt) (5th highest in Wales, 5th highest in England & Wales) Glyder Fawr is also known as a Welsh Nuttall (5th highest in Wales, 5th highest in England & Wales) and a Welsh Marilyn (3rd highest in Wales, 111th highest in the UK). Glyder Fawr means 'Large Heap or Large Pile of Stones' in Welsh and is pronounced 'g-lid-der var'.
Completing this walk will also take you to the top of Glyder Fach at 990m (3249ft). Glyder Fach is classified as a Welsh Mountain (Hewitt) (6th highest in Wales, 6th highest in England & Wales) Glyder Fach is also known as a Welsh Nuttall (6th highest in Wales, 6th highest in England & Wales). Glyder Fach means 'Small Heap or Small Pile of Stones' in Welsh and is pronounced 'g-lid-der vach'.
You will also reach the summit of Castell y Gwynt (Glyder Fach) at 972m (3190ft). Castell y Gwynt (Glyder Fach) is also known as a Welsh Nuttall (9th highest in Wales, 10th highest in England & Wales). Castell y Gwynt (Glyder Fach) means 'Castle of the Wind' in Welsh.
You can find more walks near this one on these unique free-to-access Interactive Walk Planning Maps: (click/TAP to select)
1:25,000 scale OS Explorer Map (the ones with orange/yellow covers):
1:50,000 scale OS Landranger Map (the ones with pink/magenta covers):
Some Photos and Pictures from Walk gw115 Glyder Fach, Castell y Gwynt and Glyder Fawr from Ogwen Cottage, Llyn Ogwen
In no particular order . . .

Ogwen Cottage, Nant Ffrancon and the shoulder of Pen yr Ole Wen from Llyn Idwal

Pen yr Ole Wen and Llyn Idwal from the top of The Devil's Kitchen (Twll Du)

Biscuits and hot chocolate near Llyn Idwal with the Nant Ffrancon valley in the distance

*Y Garn (Glyderau) (far left), Elidir Fawr, Foel-goch, Mynydd Perfedd and Carnedd y Filiast (Glyderau) from Tryfan

Pen yr Ole Wen and Llyn Idwal from the top of Twll Du or The Devil's Kitchen in the snow

Bwlch y Ddwy-Glyder, Castell y Gwynt and Glyder Fach from Glyder Fawr in mist

My wife with Meg and Joe on at The Cannon Stone on the North Ridge of Tryfan

Sunset over Llyn Lockwood (centre bottom), Llyn Gywant, Y Lliwedd and Snowdon (Yr Wyddfa) from the Miner's Track near Glyder Fach

Hubby and kids, YingLi and WingHoi, on the cantilever rock on Glyder Fach in the mist

The Devils' Kitchen (Twll Du) (left) and Y Garn (Glyderau) (right) from near Idwal Cottage, Llyn Ogwen

The Snowdon Horseshoe from Glyder Fach - featuring in the mid-distance: Y Lliwedd (centre left), Crib Goch (centre right), Snowdon (Yr Wyddfa) and Garnedd Ugain (Crib y Ddysgl) (far right)

Looking down Nant Ffrancon to Bethesda with Anglesey in the far distance from near Llyn Bochlwyd in the Ogwen valley

Y Garn (Glyderau), Elidir Fawr (centre) and Foel-goch from near Y Foel Goch

Y Garn (Glyderau) (far left), Foel-goch (Glyderau) and Carnedd y Filliast from Llyn Idwal

Nearing the summit of Tryfan with Llyn Bochlwyd and the north shore of Llyn Idwal far below

Cwm Idwal featuring Glyder Fawr (left), Twll Du or The Devil's Kitchen (centre) and Y Garn (right)

Y Garn (Glyderau) (far left), Foel-goch (Glyderau), Carnedd y Filliast, Ogwen Cottage, Nant Ffrancon and the shoulder of Pen yr Ole Wen (right) from Llyn Idwal

Y Garn (Glyderau), Foel-goch (Glyderau), Mynydd Perfedd and the shoulder of Pen yr Ole Wen from Llyn Ogwen

Early morning mist over Llyn Ogwen with Y Garn (Glyderau) and Foel-goch beyond
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