“NASCAR isn’t run on public streets.”
That’s your reply?
Well then..how about the Long beach grand prix...
That IS run on public streets...
So once again...now that I have met your qualifier....should I be able to barge my way into a race with my own car..that is run on a public street?
Since the danger involved in your scenario is orders of magnitude greater then for an individual runner joining into the marathon your analogy is inapt.
In addition race car drivers need years of training and experience to be qualified to safely drive a race car. Marathon runners need only to put one foot in front of the other.