Leave Tregaron on Dolecoed Road, this takes you on the mountain road to Abergwesyn and takes in a few fords and also the Devil's Staircase. Not one for the GSXR crowd although until it hits the forests is a good UK style B road. Then the surface does deteriate a bit until after Nant Ystalwyn. Did this track at night on the Welsh National Rally and it was quite scary but the fords were only an inch or so deep even in early May.