Pen Twyn Mawr
658m (2160ft)
The Black Mountains, The Brecon Beacons, Powys, Wales
You can find Pen Twyn Mawr & 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):
See Pen Twyn Mawr and the surrounding tops on our free-to-access 'Google Style' Peak Bagging Maps:
See Pen Twyn Mawr and the surrounding tops on our downloadable PDF Peak Bagging Map:
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Vital Statistics:
| Length: | 12ml (19km) |
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| Ascent: | 2,637ft (804m) |
| Time: | 7 hrs |
| Grade: |  (Hard) |
Route Summary:
Nuadd-fawr - Llanbedr - Darren Fach - Pen Twyn Glas - Mynydd Llysiau - Pen Trumau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Pen Gwyllt Meirch - Nantyrychain - Cwm Farm - Nuadd-fawr
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Vital Statistics:
| Length: | 13.5ml (21.5km) |
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| Ascent: | 3,175ft (968m) |
| Time: | 8 hrs |
| Grade: |  (Hard) |
Route Summary:
Nuadd-fawr - Llanbedr - Table Mountain (Pen Cerrig-calch) - Trwyn Ysgwrfa - Pen Cerrig-calch - Pen Allt-mawr - Pen Twyn Glas - Mynydd Llysiau - Pen Trumau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Pen Gwyllt Meirch - Nantyrychain - Cwm Farm - Nuadd-fawr
Fellow go4awalkers who have already walked, climbed, summited & bagged Pen Twyn Mawr
Melfyn Parry walked up Pen Twyn Mawr on July 16th, 2024 [from/via/route] Followed go4awalk route PO153 - Pen Cerrig Calch & Waun Fach from Neuadd Fawr. Once on the ridge the walk is relatively easy, good paths. There are some areas that are quite boggy, so be prepared if following this route after lots of rain. The first peak was hard going, lots of tall bracken & bilberry bushes to fight your way through, I was so glad to reach the top of Pen Cerrig Calch. The final path from the cairn to the minor road leading back to the car park was also overgrown with bracken & the public footpath part was seriously neglected from a maintenance perspective, although the stiles looked almost new the path itself was overgrown with nettle, bramble & even more bracken making the last leg of the walk hard work. [with] On my own [weather] Sunny spells & generally dry. For a mid July walk it was quite cool at times. - Best to avoid this walk when the bracken is in season. If you have to walk in the summer months & especially after rain, waterproofs are a must as the grasses & bracken don't dry out at their base & you can get seriously wet even though you think it's a dry day.
Mark Davidson climbed Pen Twyn Mawr on April 10th, 2005 [from/via/route] Walk po153 Pen Cerrig-calch & Waun Fach from Nuadd-fawr [with] Theresa [weather] Dry but rather cloudy - tops were clear though
Sion Britton bagged Pen Twyn Mawr on April 11th, 2021 [from/via/route] O Llanbedr. Horseshoe Route. [with] Solo [weather] Braf/ Cymylog
Simon Burgess hiked Pen Twyn Mawr on August 23rd, 2020 [from/via/route] Pen Twyn Glas Pen Trumau Waun Fach Pen Y Gadair Fawr Pen Twyn Mawr [with] Solo [weather] Overnight
Dale Tyler summited Pen Twyn Mawr on August 30th, 2017 [from/via/route] 7th peak on the Waun Fach horseshoe from Cwmdu to Crickhowell [weather] Mostly glorious, two short sharp showers at the beginning of the walk-enough convince me to reproof my jacket! - 19 mile walk followed by a well deserved pint & meal in Crickhowell. Sticky toffee pudding, mmmmm!
Robert Shaw conquered Pen Twyn Mawr on May 13th, 2017 [from/via/route] From Llanthony whilst doing the Black Mountain Challenge. [with] Alcester Gents Sports Club [weather] Wet & misty
Christina Lander scaled Pen Twyn Mawr on March 10th, 2015 [from/via/route] Pen Carrig-calch - Pen Allt-mawr - Pen Twyn Glas - Mynydd Llysiau - Pen Trumau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr [with] Dick [weather] Warm & sunny
David Price walked up Pen Twyn Mawr on July 13th, 2013 [from/via/route] Llanbder [with] Jean
Tim Buckley climbed Pen Twyn Mawr on September 28th, 2014 [from/via/route] po153 from Neuadd Fawr, set off 8.30 via Waun Fach & other tops, arrived here at 2.03pm [with] Solo walk [weather] Hot & clear - still - On the way down back to the start above Cwm Farm came across a Geo-cach, completed the log book - look at for it!
Wyn Griffiths bagged Pen Twyn Mawr on March 5th, 2014 [from/via/route] From Waun Fach & Pen y Gadair [with] Me [weather] Dry - Great walk po129
David Lane hiked Pen Twyn Mawr on August 15th, 2008 [with] Kelly
Michael Rygol, Paul Booth, Trevor Williams, Matthew Thomas and Richard Penney have all walked, climbed & bagged Pen Twyn Mawr.
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More Photographs & Pictures of views from, on or of Pen Twyn Mawr
*270° Panorama featuring Pengenfford, Pen Trumau, Waun Fach, Pen y Gadair Fawr, Pen Twyn Mawr, Crug Mawr and the The Grwyne Fechan valley from Mynydd Llysiau
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