Right there is a 3rd way to do this, I'm not saying its better than rubber banding or Pikes Peak but it is another option for how to do it.
Tier 1 >
7th event along (Windy Point Short A) >
Evo IX >
Right the first half of this course is as good as straight, with only one or two basic corners that you can take at full speed. To cut a long guide short heres what you do;
Drive until you get to the second time board (about half of the stage), spin around and drive back to start. Rinse and repeat as many times as needed.
This has the advantage of knocking off the miles as quick (if not quicker) than the Pikes Peak method with no loading times and is almost as simple as the rubber band method.....so its a nice in the middle 3rd option for you to try.
I was getting 15 miles every 10 minutes doing it this way and the journey to the second time board and back is about 2.7 miles.