In reply to abr1966:
I live in Ludlow, and hearing west from here there's almost limitless tarmac in beautiful countryside to explore. If you're happy with hills it's easy to pick a route on roads so quiet you'll only see a handful of cars all day.
I'd suggest heading towards Knighton via Wigmore, then exploring the Kerry Ridgeway before dropping back down to Bishops Castle for the night (3 Tuns Brewery). Drop me an email if you want more specific route advice