We leave the lay by alongside the A40 and head up a fairly steep short stretch of road. We then follow an uneven rocky lane until we join the footpath that starts at the Venison centre. We trun left onto that path and follow the lane up and then cross a field where we can go left or right (we will be governed by underfoot conditions) and progress up to the old hill fort area of the Allt. We will stop for coffee overlooking both Pen y Fan and Llangors lake. We then start to descend towards the direction of Pennorth and turn right as soon as we reach a tarmacadam road. We take a left onto a footpath and then cross in front of Tymawr farm before soon reaching the lake near Llangasty Church. The road then leads us back towards the village hall and we turn left just in front of the hall. The lane up is then quite rocky and difficult underfoot, but is not too long. We then retrace our steps briefly before stopping for lunch with great views (weather permitting!) of Pen y Fan. Following the lower footpath we then travers a wooded area on our way back down to the Lay by.
There is virtually no place to shelter along large parts of this walk, adequate layers and waterproofs are essential along with sturdy boots. While not strenous, it can be daunting for some, If you have any doubts about your ability to complete this walk please give me a ring and I will advise.