If you’re interested in understanding the sections of the course where aero is most important, I think the best approach is to find someone’s public strava file and look for flatter sections where the speeds are higher.
I.e. if there is a smooth section but on a hill (eg section of road from the top Carter Summit to the Sugarloaf turnoff), it’s not the same as a smooth section on the flats (eg road from the bottom of Powerline to the Pipeline turnoff).