Fan Frynych and Craig Cerrig Gleisiad

This was walk number 2 of our visit to the Brecons this year and this one was one I’d see recommended on lots of websites (a bit like walk 1 around the 4 Waterfalls). Again this was a short distance of barely 4 miles, we weren’t in a rush to get round so took our time and the weather was superb for March, meaning just a t shirt needed! Parking up on the A470, north of the Storey Arms Centre, there are few clues as to what might be in store. Only the top of Craig Cerrig Gleisiad is in view from the layby, but it bowl shape gives a clue. We booted up and headed off up the simple short path through the woodlands which would deposit us near to the bowl, but not quite at it. To keep the surprise longer we turned right and followed a delightful path traversing the slopes, to the point on the Twyn Dylluan-ddu ridge where the climb up Fan Frynych is easier. A sharp left turn here opened up the views into Mid-Wales, although the haze restricted some of the views a little. It was clear that we were climbing and the views would get better that way as we reached Fan Frynych, we also had some restricted views into the cwm of Craig Cerrig Gleisiad, but they could wait a little longer. Fan Frynych was first and a lunch stop needed looking north, if only to allow the group of male summit hoggers to move on, so I could take a photo. Before long we were looking down into the cwm and summitting Craig Cerrig Gleisiad, a small pile of stones marking the top. All that was left was a thigh burning descent down to the wooded path and the car. A superb little walk and on a day like this why rush around.

Start – A470 layby

Route – Twyn Dylluan-ddu – Fan Frynych – Craig Cerrig Gleisiad – A470

Distance – 4 miles   Start time – 10.30am  Time taken – 3hrs 30mins  Highest Point – Fan Frynych 629 metres

Weather – Sunny and warm

© Crown copyright 2026 Ordnance Survey FL 2026 SF
Stood by the A470 looking out towards the town of Brecon, the weather is stunning and we are ready for the off
Turning around Linda is ready on the right hand side, we will head through the trees towards the cwm below Craig Cerrig Gleisiad
Looking back along the woodland path, a gentle incline all the way
A tantalising glimpse of the cwm, we would turn right here
We traversed a lovely path with views right to Pen y Fan and Corn Du, the town of Brecon in the distance
A fab path with fab views, we stopped for a brew just along here
We had turned left below the trees down there and climbed up this path, heading for Fan Frynych. Mid Wales is stretching out beyond
To our left now is Pen y Fan and Corn Du. The A470 runs through the middle of the picture heading over the Brecon Beacons
That’s the Black Mountain in the distance, we will be there tomorrow!
The western side of the Brecons has the Black Mountain (Fan Brycheiniog) and Fan Gyhirych to the left. The Black Mountain walk is a classic, but I’ve heard the Fforest Fawr area holding Fan Gyhirych is a decent place as well. We had a stop here for lunch.
Lovely views for lunch to Mid Wales
No one now at Fan Frynych summit, so I get a photo which includes Pen y Fan behind
And the other way has (left to right) Fan Llia, Fan Nedd, Fan Gyhirych and the Black Mountain right of the trig
Frogspawn on the way to Craig Cerrig Gleisiad
Dropping down first and then up as we get lovely views into the cwm
Summit of Craig Cerrig Gleisiad
Rounding the top we get great views in and down and across the cliffs
That view out along the A470 towards Brecon
The angle of the photo shows how steep this bit is. A lady behind us slipped on a particularly greasy grassy section, she was covered in mud but assured us that she had a change of clothes in the car!
One last look back to Craig Cerrig Gleisiad. A superb walk and we took our time with two stops for a coffee and the lunch stop. Getting better at planning these walk stops!!

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