I did the whole of the ridgeway in 5 days in 2011. I did cycle it, (yes I hear the hiss & boo's). Though this was from a time perspective, because only had a week off work and needed to do the forward mileage, then return back to the campervan, then drive to the next point etc.
Though always rated the ridgeway. I used to walk sections of it with my grandfather in the 80's.