Another app you may be interested in testing with me Paul.
Yesterday I heard about an Australian app, called Mud Map, that looks really interesting.
From a massive array of third party maps from across the world, it integrates road data and topographical maps data so that road routes to your walk can be planned and displayed at the same time giving ON and OFF ROAD navigation simultaneously.
For the UK, it combines NAVTEQ™ road maps, Ordnance Survey maps and Google Maps, and downloads these to your iPhone so you don’t need internet access when navigating, and cleverly it only uses the maps you need for the physical area you are in, making managing a big store of maps easy.
Also the app is smart enough to keep tracking, even while the iPhone is in sleep mode, (very neat) which really extends the iPhone battery life.
After your journey, you wirelessly upload your trip data to an online cloud based server, and from there you can see your trip in 3D from any MAC or PC, plus of course post it on the web or email it to friends/colleagues.
Looks promising.