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Mynydd Llysiau
663m (2175ft)

The Black Mountains, The Brecon Beacons, Powys, Wales


Record Mynydd Llysiau as Bagged, Climbed & Conquered


Welsh Mountain Icon

Welsh Mountain
94th highest in Wales,
227th in England & Wales

Welsh Nuttall Icon

Welsh Nuttall
125th highest in Wales,
303rd in England & Wales

Walk Mynydd Llysiau walking UK Mountains in The Black Mountains The Brecon Beacons National Park Powys, Wales

Mynydd Llysiau Summit

Photo: Jon Rimmer

You can find Mynydd Llysiau & all the walks that climb it on these unique free-to-access Interactive Walk Planning Maps: (click/TAP to select)

The Brecon Beacons National Park


1:25,000 scale OS Explorer Map (the ones with orange/yellow covers):

OL13 Brecon Beacons National Park - Eastern area


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

161 Abergavenny & The Black Mountains


See Mynydd Llysiau and the surrounding tops on our free-to-access 'Google Style' Peak Bagging Maps:

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


You can walk to the top of Mynydd Llysiau by using any of these 3 easy‑to‑follow route maps:
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Walk po135 Pen Cerrig-calch and Mynydd Llysiau from Nuadd-fawr

Fine views in all directions

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Vital Statistics:

Length: 11ml (17.5km)
Ascent:2,430ft (741m)
Time:6½ hrs
Grade:Walk Grade 6 Icon (Moderate)
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Walk po129 The Grwyne Fechan Round

Fine high mountain views

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Vital Statistics:

Length: 12ml (19km)
Ascent:2,637ft (804m)
Time:7 hrs
Grade:Walk Grade 7 Icon (Hard)
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Walk po153 Pen Cerrig-calch and Waun Fach from Nuadd-fawr

Fine views in all directions

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Vital Statistics:

Length: 13.5ml (21.5km)
Ascent:3,175ft (968m)
Time:8 hrs
Grade:Walk Grade 8 Icon (Hard)

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

Melfyn Parry walked up Mynydd Llysiau 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.

Paul Roddam climbed Mynydd Llysiau on April 14th, 2024 [from/via/route] Hairpin up from LLanbedr [with] solo [weather] Spring sun

Donovan Suddell bagged Mynydd Llysiau on May 8th, 2023 [from/via/route] Crickhowell [with] Wife [weather] warm but cloudy most of the day

Mark Davidson hiked Mynydd Llysiau 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 summited Mynydd Llysiau on April 11th, 2021 [from/via/route] O Llanbedr. Horseshoe Route. [with] Solo [weather] Braf/ Cymylog

Dale Tyler conquered Mynydd Llysiau on August 30th, 2017 [from/via/route] 4th 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!

Glenn Radford scaled Mynydd Llysiau on October 29th, 2015 [from/via/route] walk po105 [with] William [weather] Mist Cloud low AM Clear windy PM

Alan Smith walked up Mynydd Llysiau on July 2nd, 2015 [with] Barry

Christina Lander climbed Mynydd Llysiau 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] Beautiful day, warm & sunny

Robert Taylor-Marriott bagged Mynydd Llysiau on October 17th, 2014 [from/via/route] Route 64: Pen Cerrig-calch, Pen Allt-mawr, Pen Twyn Glas, Mynydd Llysiau (PGP). [with] Vince Wetton and Robert Taylor-Marriott. [weather] Sunny, cloudy & windy. - Planned to complete 7 Mountains/hills & completed 4 only as Vince passed away at SO 20750 29716.

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More Photographs & Pictures of views from, on or of Mynydd Llysiau

Pen Cerrig-calch, Pen Allt-mawr, Tal-Trwynau, Pen Twyn Glas, Mynydd Llysiau and Pen Trumau from Waun Fach

Pen Cerrig-calch, Pen Allt-mawr, Tal-Trwynau, Pen Twyn Glas, Mynydd Llysiau and Pen Trumau from Waun Fach

Photo: Jon Rimmer (2)

The Grwyne Fechan valley from Mynydd Llysiau

The Grwyne Fechan valley from Mynydd Llysiau

Photo: Jon Rimmer (8)

Mynydd Llysiau from Pen Trumau

Mynydd Llysiau from Pen Trumau

Photo: Jon Rimmer (4)

Pen Trumau and Waun Fach from Mynydd Llysiau

Pen Trumau and Waun Fach from Mynydd Llysiau

Photo: Jon Rimmer (6)

*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

*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

Photo: Jon Rimmer (7)


Send us your photographs and pictures on, of, or from Mynydd Llysiau

If you would like to add your walk photographs and pictures featuring views from, on or of Mynydd Llysiau 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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