Mainly in the north around Llyn Brenig, Clocaenog, Trawsfynydd, Bala, Dolgellau, Snowdonia all of which is really accessible from my place. When I've got more time like a whole day I venture in to mid wales. Love riding the A44 from Aberystwyth to Crossgates and then head north to Newtown on the A483. The whole day out is spectacular on those roads.
I'll give you a shout next time I'm heading down those parts.