Follow a steadily climbing Roman road skirting the eastern edges of Pen y Fan before roaring down the rocky descent of Cwm Cynwyn. Stunning views and proper mountain biking on a route that even goes via the odd pub!
20.30 miles, 32.67 km, 707m ascent, 3 – 6 hours
Read more at http://www.ukhillwalking.com/logbook/r/?i=172