Mountain (Hewitt), Nuttall  & Marilyn Icon

Glasgwm
779m (2556ft)

The Arans, Gwynedd, Wales

*Glasgwm is actually just outside of The National Park Boundary


Record Glasgwm as Bagged, Climbed & Conquered


Welsh Mountain Icon

Welsh Mountain
41st highest in Wales,
95th in England & Wales

Welsh Nuttall Icon

Welsh Nuttall
52nd highest in Wales,
117th in England & Wales

Welsh Marilyn Icon

Welsh Marilyn
18th highest in Wales,
432nd highest in Great Britain

Walk Glasgwm walking UK Mountains in The Arans Snowdonia National Park*<br> Gwynedd, Wales

Glasgwm Summit

Photo: Jamie Hodgeson

You can find Glasgwm & all the walks that climb it 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):

OL23 Cadair Idris & Bala Lake/Llyn Tegid


1:50,000 scale OS Landranger Maps (the ones with pink/magenta covers):

124 Dolgellau & Porthmadog


125 Bala & Lake Vyrnwy, Berwyn


Glasgwm on our free-to-access 'Google Style' Peak Bagging Map:

See Glasgwm and the surrounding tops on our downloadable PDF Peak Bagging Map:


Not familiar with Glasgwm?

See the location of Glasgwm and the walk that climbs it on an interactive Google Map


You can walk to the top of Glasgwm by using this easy‑to‑follow route map:
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Walk gw149 Glasgwm and Pen y Brynfforchog from Cwm Cywarch

Dramatic mountain views

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Vital Statistics:

Length: 7.5ml (12km)
Ascent:2,721ft (829m)
Time:5½ hrs
Grade:Walk Grade 6 Icon (Moderate)

Other walkers who hiked, climbed, bagged and summited Glasgwm Fellow go4awalkers who have already walked, climbed, summited & bagged Glasgwm

Donovan Suddell walked up Glasgwm on December 17th, 2021 [from/via/route] Cwm Cywarch gw149 [with] father in law [weather] Cloudy & misty

Bleddyn Rhys climbed Glasgwm on May 17th, 2019 [from/via/route] Ar hyd y gribin o Dinas Mawddwy [with] Ar ben fy hyn... [weather] Eithaf braf ond 'hazy' - gwynt ar y topiau. - Hirach nag oeddwn wedi ei feddwl. Dringo fynnu'r ochor o'r pentraf yn serth iawn!

Tony Lennon bagged Glasgwm on March 26th, 2019 [from/via/route] Mine road [with] Ed [weather] changeable, -5 windchill

Mark Davidson hiked Glasgwm on August 10th, 2007 [with] Theresa [weather] Bit grey with some of the tops in mist

Christina Lander summited Glasgwm on September 26th, 2015 [from/via/route] Cwm Cywarch - Glasgwm - Pen y Brynfforchog - Nany y Craig-wen - Cwm yr Ychen - Cwm Cywarth [with] Dick [weather] Lovely sunny, warm day

Robert Taylor-Marriott conquered Glasgwm on November 6th, 2012 [from/via/route] Route 43: Glasgwm & Pen y Brynfforchhog (GPB) Completed 06.11.12 [with] Vince Wetton 7 Robert Taylor-Marriott. [weather] Sunny.

Vince Wetton scaled Glasgwm on November 5th, 2012 [with] RTm [weather] Sunny Snow on Peaks

Kath Edwards has walked up Glasgwm [with] Si Stokes [weather] Beautiful cold & clear day. - Did this walk on my 40th Birthday, cant think of a nicer place to spend it!!

Paul Booth, Trevor Williams and Stephen Hobdell have all walked, climbed & bagged Glasgwm.

To add (or remove) your name and experiences on this page - Log On and edit your Personal Mountain Bagging Record



Not familiar with Glasgwm?

See the location of Glasgwm and the walk that climbs it on an interactive Google Map


More Photographs & Pictures of views from, on or of Glasgwm

Gwaun y Llwyni from the bwlch between Glasgwm and Gwaun y Llwyni

Gwaun y Llwyni from the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (285)

Footbridge on the approach to the bwlch between Glasgwm and Gwaun y Llwyni

Footbridge on the approach to the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (279)

Glasgwm from Aran Fawddwy

Glasgwm from Aran Fawddwy

Photo: Dewi Roberts (4)

Following this unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Following this unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (280)

Waterfalls on the unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Waterfalls on the unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (282)

Glasgwm from Pen y Brynfforchog (aka Pen y Brynnfforchog)

Glasgwm from Pen y Brynfforchog (aka Pen y Brynnfforchog)

Photo: Jamie Hodgeson (2)

Looking back down to Cwm Cywarch from the bwlch between Glasgwm and Gwaun y Llwyni

Looking back down to Cwm Cywarch from the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (283)

The Glasgwm crags from the head of Cwm Cywarch

The Glasgwm crags from the head of Cwm Cywarch

Photo: Mark Kissipie (278)

Following this unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Following this unnamed stream up to the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (281)

Gwaun y Llwyni (with Glasgwm in the distance right) from the RAF Memorial on Drws Bach

Gwaun y Llwyni (with Glasgwm in the distance right) from the RAF Memorial on Drws Bach

Photo: Mark Kissipie (305)

Hengwm with Glasgwm (left) and Waun Camddwr (right) above from Waun Goch

Hengwm with Glasgwm (left) and Waun Camddwr (right) above from Waun Goch

Photo: Mark Kissipie (312)

Ruin on the bwlch between Glasgwm and Gwaun y Llwyni

Ruin on the bwlch between Glasgwm and Gwaun y Llwyni

Photo: Mark Kissipie (284)


Send us your photographs and pictures on, of, or from Glasgwm

If you would like to add your walk photographs and pictures featuring views from, on or of Glasgwm to this page, please send them as email attachments (configured for any computer) along with your name to:



and we shall do our best to publish them.

(Guide Resolution = 300dpi. At least = 660pixels (wide) x 440 pixels (high).)

Send us your photographs and pictures on, of, or from Glasgwm via Facebook

You can also submit photos via our Facebook Page.

NB. Please indicate where each photo was taken.



Not familiar with Glasgwm?

See the location of Glasgwm and the walk that climbs it on an interactive Google Map





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