OK, How about this:
Park Crickhowell, down by the river.
North to BW at 237227 (Neuadd Fawr).
BW to spot height at 617 (204286).
Choice now, but aim for Pengenfford.
BW south next to road. Ends at 186271.(Do not use the foot bridge, but pedal the stream for a laugh).
Road NW to col at Cockit hill.
BW Sth to 153266 – pay your respects at the grave of Kevin Thomas.
http://www.flickr.com/photos/28143475@N00/3627832015/
Up the hill to 159250.
Descend down to Bwlch.
Down to canal at Llangyndir.Along canal or BW option.
Pub – Star at Talybont.
Bivy – Woods behind Talybont.
Next day ride the Gap or head up the valley for a bandit run over the Llangattock escarment back to the car.
Lots of options to extend or curtail this route. If you do end up in the Pub, best to have some money. We only had a little bit of cash and no card. We had to choose between food or beer!
Hth
Marko