Did a great route which exteneded the Syfydrin route to about 55km last Saturday. It's similar to Pistonbroke's route but a bit shorter.
From meeting the road at the resevoir, turn right, over the dam then left, and at the end of the road continue down rocky track. Cross the bridge over the river and pick up the track heading N, turning left to the farm buildings at Hyddgen. Take the left fork bridleway 200m west of Hyddgen, climb a bit, then enjoy some cracking singletrack down Esgair Gorddi. Turn R at the track, then L through some fords to pick up the track alongside the Afon Lluestgota. At the top, in the old mine workings, turn L to take a great bit of downhill past Llyn Nantycagl. Turn L along road to rejoin the Syfydrin trail.