The exact routes are set a few weeks before the event starts. As soon as the routes are set, you will be able to view it on the arrival info on your booking or on the Day8 app. In the meantime, you can see an example route here, as well as lots of information regarding the highlights and things to do on route.
If you are booking with other yachts, you must ensure all yachts are booked from the same marina to ensure your group will remain together for the duration of the week.