See http://www.runnersworld.com/races/marine-corps-marathon-issues-lifetime-ban-to-runner http://www.runnersworld.com/races/marine-corps-marathon-issu... for an

See http://www.runnersworld.com/races/marine-corps-marathon-issues-lifetime-ban-to-runner http://www.runnersworld.com/races/marine-corps-marathon-issu... for an interesting case. (Full, ludicrous, disclosure: I once took shortcuts on the Marine Corps Marathon course; but I was following the pack. The finishers' certificates for the 1980 race went out with a finish time and an estimated adjusted time.)