Remember A Course

[rsvp]

Late in life (getting on for 70) I've come into a sport which requires me to remember seven, 500m obstacles which are on a course. Each option may be driven in any way providing they are taken in alphabetical order and are subject to certain criteria - this I perfectly uderstand. Each obstacle is completely different and has a myriad of optional courses which may be used to an individual competitors advantage. What I would like to know is, has any aber any hints on how I can remember the individual routes? Got by last year with just walking the course a thousand times but am trying to save the legs a bit this year. Need something simple to use in the heat of the moment! Thank you