Coach Ken's presentation at the United Hospital System, Physical Therapy & Athletic Training Rehabilitation, X*CEL Performance Educational Series.
Since "Ironman" is a registered trademark, these races are now know by their distance in kilometers, 70.3 for the half and 140.6 for the full. Also, the "International" distance is sometimes called the "Olympic" distance, since that is the event distance in the Olympics. But since "Olympic" is also a trademark, it cannot be used outside of the Olympic games environment.