A colleage has just introduced me to this terrific site: bikeroutetoaster.com. It’s a free application using Google maps with which you can very quickly draw up a cycle route. The auto-routing is geared toward finding a good route, based on maximising speed or minimising distance and optionally avoiding main roads. The summary view shows a nice elevation chart along with total distance, total climb etc and an estimated trip time. If you have a Garmin gadget then you can download the route data for it. Finally the cue sheet page gives you turn-by-turn instructions.
This is just what I’ve been after. Now I might be able to estimate how many miles I’ve ridden since New Bike.