I must be missing that internal compass, or any skill to navigate my way around any forest like environment. Even with a aerial photo which I had with me on my iPhone I still got slightly lost, took wrong turns and frequently blew out the course distance by a good 4 or 5km. Ridiculous.
But now I'm very happy to say it's all sorted, and you can view the course routes in map form, as a video of the entire track (sorry to any walkers or runners which I encountered on their tracks on my bike) which also details any possible hazards as well as a cool 3D flyover courtesy of mapmyride. You'll need to install the google earth app on your computer or it won't work, but it's an interesting way to watch the route.