Sue and I have been trying to find a new route for a fell race, and had thought of a shortened Black Mountains route as a possibility. The full route starts and finishes in Llanbedr, a small village up a valley from Crickhowell. It takes in Pen Cerrig Calch, Pen y Gadair Fawr, Chwarel y Fan and a few others just for good measure.
Our route started a few miles north of Llanbedr at Cwm Farm (SO325237). Dropping down to cross the river then up through the forestry it headed NE to the ridge, then along to Pen Twyn Mawr. There was a long but not too steep climb, except near the end, to Pen y Gadair Fawr. From here we headed NW to Waun Fach. This is the only hill I know where the summit is in a depression below the surrounding ground! a little bowl of mud with a weathered concrete block at its centre. A strange summit for the highest peak in the Black Mountains. From here it was a good run down the ridge to the col then a small climb onto a southerly ridge taking in Mynydd Llysiau & Pen Twyn Glas. This was a superb ridge for running, hardly a break in our pace until we got down to the farming level and had to negotiate with a herd of bullocks to get onto a muddy lane down to the road.
Apart from Waun Fach we saw hardly anyone, a group of 3 walkers when we were on our way up, and the same group just before we finished.
It was a good route, but the lack of parking and the awkward length probably preclude it as a fell race.
20km 800m 2h 52m