Walk ce100 Y Garn (Pumlumon), Pen Pumlumon Fawr (Plynlimon), Pen Pumlumon Llygad-bychan and Pen Pumlumon Arwystli from Nant-y-moch Reservoir

This 10 mile, Grade 6 (Moderate), easy-to-follow, hand-crafted walk, complete with GPS Waypoints, starts at Nant-y-moch Reservoir & will take about 6 hrs to complete.

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Vital Statistics:

Length:10mls (16km)
Ascent:2,353ft (717m)
Time:6hrs
Grade:Walk Grade 6_23_with_text.png Icon

Route outline for walk ce100:

Nant-y-moch Reservoir  -  Nant-y-moch  -  Y Garn (Pumlumon)  -  Dyll Faen  -  Pen y Drawsallt  -  Pen Pumlumon Fawr (Plynlimon)  -  Pumlumon Fach  -  Pumlumon Fach (East Top)  -  Pen Pumlumon Llygad-bychan  -  Pen Pumlumon Arwystli  -  Craig y March  -  Cwm Gwerin  -  Lluest y Graig  -  Afon Hengwm  -  Pantau'r Brwyn  -  Nant y Llyn  -  Maesnant  -  Bryn y Beddau  -  Nant-y-moch Reservoir

Peaks, Summits and Tops reached on this walk:

Hewitt Icon
4
Welsh
Mountains
Wainwright Icon
0
Wainwrights
Welsh Nuttall Icon
5
Welsh
Nuttalls
Dewey Icon
0
Welsh
Deweys
Wainwright Outlying Fell Icon
0
Wainwright
Outlying Fells
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1
Welsh
Marilyn
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0
Bridgets

Peak Bagging Statistics for this walk:

The highest point of this walk is Pen Pumlumon Fawr (Plynlimon) at 752m (2468ft). Pen Pumlumon Fawr (Plynlimon) is classified as a Welsh Mountain (Hewitt) (49th highest in Wales, 118th highest in England & Wales)

Pen Pumlumon Fawr (Plynlimon) is also known as a Welsh Nuttall (61st highest in Wales, 145th highest in England & Wales) and a Welsh Marilyn (22nd highest in Wales, 479th highest in the UK).

The summit of Pen Pumlumon Fawr (Plynlimon) is marked by an Ordnance Survey Trig Point. Pen Pumlumon Fawr (Plynlimon) is the highest point in the county of Ceredigion.

Completing this walk will also take you to the top of Pen Pumlumon Arwystli at 741m (2431ft). Pen Pumlumon Arwystli is classified as a Welsh Mountain (Hewitt) (54th highest in Wales, 127th highest in England & Wales)

Pen Pumlumon Arwystli is also known as a Welsh Nuttall (66th highest in Wales, 156th highest in England & Wales).

You will also reach the summit of Pen Pumlumon Llygad-bychan at 727m (2386ft). Pen Pumlumon Llygad-bychan is classified as a Welsh Mountain (Hewitt) (58th highest in Wales, 140th highest in England & Wales)

Pen Pumlumon Llygad-bychan is also known as a Welsh Nuttall (72nd highest in Wales, 174th highest in England & Wales).

Along the way you will also bag and tick-off:

  • Y Garn (Pumlumon) at 684m (2245ft). Y Garn (Pumlumon) is classified as a Welsh Mountain (Hewitt) (78th Wales, 191st Eng & Wal) and a Welsh Nuttall (102nd highest in Wales, 250th highest in England & Wales). Y Garn (Pumlumon) means 'The Cairn' in Welsh and is pronounced 'uh-gan'.

  • Pumlumon Fach at 664m (2179ft). Pumlumon Fach is known as a Welsh Nuttall (123rd highest in Wales, 299th highest in England & Wales).

Free-to-access Interactive Walk Planning Maps:


1:25,000 scale OS Explorer Maps (orange/yellow covers):

An Interactive Walk Planning Map for OS Explorer 200 Llandrindod Wells & Elan Valley is not currently available

An Interactive Walk Planning Map for OS Explorer 201 Knighton Presteigne is not currently available


1:50,000 scale OS Landranger Map (pink/magenta covers):

An Interactive Walk Planning Map for OS Landranger 135 Aberystwyth & Machynlleth is not currently available



Some Photos and Pictures from Walk ce100 Y Garn (Pumlumon), Pen Pumlumon Fawr (Plynlimon), Pen Pumlumon Llygad-bychan and Pen Pumlumon Arwystli from Nant-y-moch Reservoir

In no particular order . . .

Pen Pumlumon Arwystli and Pen Cor-maen (right) from Cwm Gwerin

Pen Pumlumon Arwystli and Pen Cor-maen (right) from Cwm Gwerin

Photo: Mike Matthews (26)

Pen Pumlumon Fawr (Plynlimon) from Nant-y-moch Reservoir

Pen Pumlumon Fawr (Plynlimon) from Nant-y-moch Reservoir

Photo: Maurice Kyle (7)

Pen Pumlumon Fawr (Plynlimon) summit

Pen Pumlumon Fawr (Plynlimon) summit

Photo: Mike Matthews (12)

Nant-y-moch Reservoir from Pen Pumlumon Fawr (Plynlimon)

Nant-y-moch Reservoir from Pen Pumlumon Fawr (Plynlimon)

Photo: Donovan Suddell (5)

The two massive cairns on the summit of Pen Pumlumon Arwystli

The two massive cairns on the summit of Pen Pumlumon Arwystli

Photo: Mike Matthews (22)

Y Garn (Pumlumon) summit

Y Garn (Pumlumon) summit

Photo: Mike Matthews (6)

Pen Pumlumon Fawr (Plynlimon) summit trig point with Y Garn (Pumlumon) in the distance

Pen Pumlumon Fawr (Plynlimon) summit trig point with Y Garn (Pumlumon) in the distance

Photo: Mike Matthews (9)

Craig y March from Cwm Gwerin

Craig y March from Cwm Gwerin

Photo: Mike Matthews (25)

Pen Pumlumon Llygad-bychan summit cairn

Pen Pumlumon Llygad-bychan summit cairn

Photo: Mike Matthews (19)

Llyn Llygad Rheidol from Pen Pumlumon Fawr (Plynlimon)

Llyn Llygad Rheidol from Pen Pumlumon Fawr (Plynlimon)

Photo: Mike Matthews (17)


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