I've no idea how to do that, but the route was plotted each morning just using Google maps on my iPhone in cycle mode, so I never really knew which way I was going each day. The tracking was done using an app called follow mee, on my iPhone, which recorded my position every ten minutes, so I still have all the details, and have just uploaded them to google maps.
Thanks for following me, it was a great feeling to know there were so many people out there watching my progress.