I thought I would revive this thread with some recent information :
Rhigo's Road (South Wales)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/51...b1!4m2!4m1!3e0
Brecon Beacons (A4059)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/51...,-3.531241,12z
Upper Chapel to Builth Wells (Mid Wales)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/52...-3.4399172,12z
Elan Valley Resovoirs (Mid Wales)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/52...a=!4m2!4m1!3e0
Elan Valley to Devils Bridge
Link to Google Maps route :
https://www.google.co.uk/maps/dir/52...5!2d52.3769462
B4391 Ffestiniog to Bala (North Wales)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/52...-3.9123076,12z
EVO Triangle (North Wales)
Link to Google Maps route :
https://www.google.co.uk/maps/dir/Ce...m0!1m0!1m0!3e0