Post Gwyn
665m (2182ft)
The Berwyns, Powys, Wales
*Post Gwyn is actually just outside of The National Park Boundary
You can find Post Gwyn & 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):
1:50,000 scale OS Landranger Map (the ones with pink/magenta covers):
Post Gwyn on our free-to-access 'Google Style' Peak Bagging Map:
See Post Gwyn and the surrounding tops on our downloadable PDF Peak Bagging Map:
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Vital Statistics:
| Length: | 8.25ml (13km) |
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| Ascent: | 2,215ft (675m) |
| Time: | 5.25hrs |
| Grade: |  (Moderate) |
Route Summary:
Pistyll Rhaeadr Waterfall - Tan-y-pistyll - Nant y Llyn - Afon Disgynfa - Cwm Rhiwiau - Cwm Yr Eithin - Blaen Gaswen - Post Gwyn - Y Clogydd - Glan Hafon (Y Garn) - Afon Yr Ast - Pistyll Rhaeadr - Tan-y-pistyll.
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Vital Statistics:
| Length: | 12.75ml (20.5km) |
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| Ascent: | 3,180ft (969m) |
| Time: | 7.75hrs |
| Grade: |  (Hard) |
Route Summary:
Pistyll Rhaeadr Waterfall - Tan-y-pistyll - Nant y Llyn - LLyn Lluncaws - Cadair Berwyn - Cadair Berwyn (North Top) - Moel Sych - Ceulan Myheryn - Post Gwyn - Y Clogydd - Glan Hafon (Y Garn) - Afon Yr Ast - Pistyll Rhaeadr - Tan-y-pistyll.
Fellow go4awalkers who have already walked, climbed, summited & bagged Post Gwyn
Melfyn Parry walked up Post Gwyn on April 27th, 2025 [from/via/route] Followed route PO155 but as I was only interested in the Nuttall, i.e. Post Gwyn I didn't ascend Y Clogydd choosing instead to skirt around the left side to meet the path down to Craig y Mŵn & then descending sharply towards the disused incline to join the leat to head back to the waterfall. [with] On my own [weather] It was a lovely day, bright & generally quite warm - Excellent views in all directions from the top. Whilst there were lots of people around the waterfall once away from this fantastic spectacle there was no one else on this hill, peace & tranquility until back at the start. Avoiding Y Clogydd & Glan Hafon (Y Garn) meant the walk was an easy 6 miler.
Christina Lander climbed Post Gwyn on July 29th, 2024 [from/via/route] Pistyll Rhaeadr - to the top of the waterfall - followed the Afon Disgynfa - crossed the bridge, & ascended across bracken, then tried to find a path without much luck across bilberry & heather - finally arrived at Post Gwyn - returned along the ridge over Y Clogydd - then to Craig-y-mwn, & a lovely path diagonally down across the cliff back to the start [with] Dick [weather] A beautiful, hot sunny day - During our holiday staying at Y Gilfach, Bryn Melyn, Llandderfel
Donovan Suddell bagged Post Gwyn on February 26th, 2021 [from/via/route] Lannrhader waterfall [with] wife [weather] sunny intervals & cold, blustery at the top
Mark Davidson hiked Post Gwyn on May 5th, 2006 [from/via/route] Walk po117 Cadair Berwyn andPost Gwyn fromPistyll Rhaeadr [with] Alone [weather] A bit cloudy but it brightened up whilst on the summit of Moel Sych
Robert Taylor-Marriott summited Post Gwyn on February 26th, 2013 [from/via/route] Route 48: Post Gwyn (PG) Completed 26.02.13 [with] Vince Wetton and Robert Taylor-Marriott. [weather] Cold & cloudy.
Vince Wetton conquered Post Gwyn on February 26th, 2013 [from/via/route] Pistyll Rhaeadr [with] RTM [weather] Low Cloud/ Bad visibility
Stuart Mellor scaled Post Gwyn on October 30th, 2007 [from/via/route] Pistyll Rhaeadr PO155 [with] Alone [weather] Sunny dry.
Paul Booth, Trevor Williams and Richard Penney have all walked, climbed & bagged Post Gwyn.To add (or remove) your name and experiences on this page - Log On and edit your Personal Mountain Bagging Record
Send us your photographs and pictures on, of, or from Post Gwyn
If you would like to add your walk photographs and pictures featuring views from, on or of Post Gwyn 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).)
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