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Name:Pen y Gadair Fawr
Hill number:2231
Height:800m / 2625ft
Parent (Ma):2229  Waun Fach
RHB Section:32A: Llandovery to Monmouth
Nuttall/Wainwright area:Black Mountains
County/UA:Powys
Catchment:Usk
Class:Simm, Hewitt, Nuttall, Buxton & Lewis, Bridge
(Tu,Sim,Hew,N,BL,Bg)
Grid ref:SO 22946 28763
Summit feature:cairn
Drop:47m
Col:753m  SO227291  
OS map sheet(s):(1:50k) 161
(1:25k) OL13N
Survey:obvious summit
GPS data:show GPS entries for this hill

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N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 667 users, only the latest 50 shown - Show all)ByDate of Ascent
with yFabioski24/01/2024
Pen Allt-mawr - Pen Twyn Glas - Mynedd Llysiau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Pen Cerrig-calch from Cwmdu. 19 milesGary Heath25/07/2023
From Waun Fach.davechaffey03/06/2023
Solo, Black Mountains Loop from Mynydd Du car park.paulh7904/03/2023
Poor visibility and cold.Vulcan03/03/2023
Nice little loop up the valley past the hermitage then up over Waun Fach, Pen y Gadair Fawr and Pen Twyn Mawr. Decent paths all day in changable, sometimes challenging, weather.sebastiencale08/11/2022
Walked up with Adam, completed three today along the ridgedavecnash18/08/2022
Cwm Banw Bridge > Tal Twynau > Pen Twyn Glas > Mynydd Llysiau > Pen Trumau > Waun Fach > Pen y Gadair Fawr > Pen Twyn Mawr > Pentwyn > Cwm Banw Bridge.Winterfloodian01/08/2022
Peak - 800m. Hike Stats: 23km; 7 hours; 671m ascent. Long looping hike including Waun Fauch and Pen y Gadair Fawr.complicatedaussie25/06/2022
Just before a steep descent in Mynydd Ddu Forestfreethehilltops05/06/2022
Parked at Mynydd Du then up to Chwarel Y Fan, back down and then up to Pen Y Gadair Fawr and ridge walked to Pen Twyn Mawr before heading back down and getting lost in the forest.SootAndShale06/05/2022
Waun Fach horseshoeBarns15018/04/2022
Parked on the minor road to the East of Pen Cerrig-calch GR23456 22893 where there is a small parking area then walked back up the road to meet the Beacons way for a Seventeen mile Nuttall walk. Visiting the summits of Pen Cerrig-calch, Pen Allt- mawr,Pen Twyn Glas,Mynydd Llysiau, Waun Fach, Pen y Gadair Fawr and PenTwyn Mawr taking just under Seven hours.WAYNE ROWLETT06/03/2022
Small cairn. Gray and windy. From Waun Fach, my last Welsh Marilyn with group. Paths generally better than expected with much restoration work evident.Denise 08/02/2022
Circular of Pen Cerrig-calch, Pen Allt-mawr,Pen Twyn Glas,Mynydd Llysiau, Waun Fach, Pen y Gadair Fawr and Pen Twyn Mawr.Arbie08/02/2022
Nuttals routeIanHHill03/10/2021
Black Mountains horseshoe run.Dave Ing11/09/2021
ellieMunroist393503/09/2021
20 mile Waun Fach round, parked at Pont Cadwgan with no issue, started at Crug Mawr and walked anticlockwise along the the obvious route. A tough route but rewarding, and definitely better this way around I think!JazDisney12/06/2021
Circuit inc Table Mountain, Mynydd Llysiau, Waun FachAjm031025/04/2021
Llanbedr Horseshoe Route.sionbrit11/04/2021
Mynydd Llysiau first, over to Waun Fach, dropped down to Grwyne Fawr reservoir, up Chwarel y Fan. Across the dam and directly up to Pen y Gadair Fawr.andrew.morel08/04/2021
Grwyne Fechan horseshoe from layby at SO234228AndrewP03/04/2021
MDC run Black Mountains fell race routemilejunkie28/11/2020
Dropped by taxi at junction near Cwm Farm. A round of the western Black Mountains then down to campsite at Crickhowell. Started misty then cleared to beautiful sunshine. With B and R.jenx09/09/2020
Completed as part of an 18km circular loop from GR: SO230248. Lovely day in the hills and managed to enjoy the views from the summit before the clouds descended.Gerry the Ranger24/08/2020
Poor conditions, very wet, bad visibility.Started off in Black Mountain (Mynydd Du) Car Park And Picnic Area and followed the path up towards Grwyne Fawr Reservois. Continued up the path before doubling back and heading to Waun Fach, following down to Pen y Gadair Fawr and Pen Twyn Mawr. Cut through Mynydd Du forestry land to get back to the car parklboutside22/08/2020
The Western Black Mountains visiting Twmpa, Rhos Dirion, Waun Fach, Pen y Gadair Fawr from Gospel Pass and returning by the same route. 20km with 770m ascent in 5 hours. (S)silveracorn_alan04/08/2020
From Pont Cadwgan CP - Bal Mawr - Chwarel y Fan - Pen y Gadair Fawr - Pen Twyn Mawr - Pont Cadwgan CPscreeleep01/08/2020
That classic 'didn't even know I'd bagged this hill until coming on to hillbaggers' special. 9 Nuttalls in total. 35km w GFE.Fionalevey21/03/2020
Long circular walk from Llanbedr, good views all round, Bog underfoot on the last summit. (After staying near the forest of dean, in October Half term)Joel45128/10/2019
23 miles, 3412ft, Crickhowell to Waun Fach walk.stephenbuda25/08/2019
From Blaenau Uchaf via Waun Fach.NormanW23/07/2019
Ascent from Neuadd Fawr to Pen Twyn Mawr (658m), then north along ridge to Pen y Gadair Fawr (800m), and Waun Fach (811m), before turning west and south to Mynydd Llysaiu (663m) and finally to Pen Twyn Glas (646m) before descending to start point. Hot sunny day, walk with my 12 year old son, distance ~19.5Km, ascent 740m.VirtualMountain20/04/2019
2nd of 7 for day on Black Dragon Challenge event out of Crickhowell. Snow banked up on NNE side. Now a defined gravel track leads NW to Waun Fach.richardrosser06/04/2019
Llanbedr horseshoeRedAndy5402/04/2019
Ascended from Blaen y Cwm car park through the forest - low cloud all day.DanMaisieBex30/12/2018
No summit, which we skirted by a whisker to the east heading across the tussocks flanks, on Black Mountains OMM with Darren. DAY 1. medium Score.Chris Pearson27/10/2018
Crickhowell - Pen Cerrig-calch - Pen Allt-mawr - Pen Twyn Glas - Mynydd Llysiau - Waun Fach - Pen y Gadair Fawr - Pen Twyn Mawr - Coed Cefn - Crickhowell.Mark Jackson25/10/2018
Climbed with Peter Thirkettlepsburgess01/10/2018
Climbed with Paul BurgessP.Thirkettle01/10/2018
A lovely gravel path all the way from Waun Fach, so the days of peat bog hopping are now gone! Solo.Dangerous Dave16/09/2018
With N and P . Difficulty finding route up and quickest route down. Walk down along main forestry road took three hours and ended two miles below upper car park.Pip5603/08/2018
10.6 mile circular from junction near Cwm Farm, walked along road to end then along contouring path up the slopes of Mynydd Llysiau, to col then up Pen Trumau along great new paths to Waun Fach (3rd time) and Pen.Y.Gadair-Fawr (3rd time), followed well defined trails along to Nuttall Pen Twyn Mawr, then down footpath south to start. Clear and sunny but the coldest and windiest weather I've ever walked in -4C feeling like -15C, could barely walk on some stages. Earlier that day bagged May Hill, Gloucestershire and later that day bagged Allt Yr Esgair and Craig Syfyrddin. 16.8 miles altogether.DanTrig23/02/2018
With JackW. Waun Fach Horseshoe CW. From Llanbedr. masmith28/01/2018
Run from LLanbedrbenwloudon02/12/2017
Nick and Julesrockwarrior23/07/2017
Circular hike starting from layby at Llanbedr to tick off Crug Hywel-Trwyn Ysgwrfa-Pen Cerrig-Calch-Pen Allt Mawr-Pen Twyn Glas-Mynydd Lysiau-Waun Fach-Pen y Gadair Fawr-Pen Twyn Mawr-Crug Mawrmanilena24/06/2017
Included in circular walk from bridge near Neuadd Farm, GR 234229, start with Pen Cerrig Calch, finish with Pen Twyn Mawr and down Pen Gwyllt Meirch and round to bridge start point. Once you have slogged and reached Pen Cerrig Calch summit you have basically gained the height. Mostly a leisurely stroll from then on. Start 10.30am finish 5.30pm. Can easily be done in less.Dewi Prysor13/05/2017
TD & CThis Dog16/04/2017