http://gpstracklog.com/2014/04/creating-geocaching-itinerary.html
This article for GPSTracklog was published a few weeks ago whilst I was away in the USA.  In it, I show you how you can take your planned route, and using GSAK, turn it into an itinerary, so that you and your caching crew know at all times which cache you are heading to, and which one is next.  Be sure to check it out!