A half marathon is a road running event of 21,097.5 meters, about 21.1 Kms. It is half the distance of a marathon and usually run on roads. Participation in half marathons has grown steadily recently.One of the main reasons for this is that it is a challenging distance, but doesn’t require the dedication that a marathon requires.In 2008, Running USA reported that the half marathon is the fastest growing type of race.It is common for a half marathon event to be held concurrently with a marathon, using almost the same course with an early finish.
