The marathon is a long-distance running event with an official distance of 42.195 kilometers (26 miles and 385 yards), that is usually run as a road race. The event was instituted in commemoration of the fabled run of the Greek soldier Pheidippides, a messenger from the Battle of Marathon (the namesake of the race) to Athens.
The marathon was one of the original modern Olympic events in 1896, though the distance did not become standardized until 1921. More than 500 marathons are contested throughout the world each year, with the vast majority of competitors being recreational athletes. Larger marathons can have tens of thousands of participants.
Source: www.wikipedia.com
Marathons are also categorized as Half Marathons and Mini Marathons, depending on the distance run. Half Marathons are run for 21 kilometers, while Mini Marathons are either 7 or 10 kilometers.
