Running has few rules.  If you cross the start and finish lines and stay on course, you won’t be disqualified, fouled out, yellow-carded or handed a penalty.  Finishing is an accomplishment and means as much to most runners as a win does to the players of a team sport.  During a recent marathon, I saw a runner take a shortcut.  He probably shaved only 30-45 seconds off his time, but it was a shortcut nonetheless.  He wasn’t positioned to place overall or in his age group, but it appeared he intended to finish.  I don’t know his name or race number and couldn’t pick him out in a lineup.  No one but he knows of the shortcut, and I wonder why he did it. …