Marathon results can be found at marathonguide.com. This website claims that it has the largest database of marathon results in the world, and events can be searched by name, place or date.
The term "marathon" originates from the legend of the Greek messenger Pheidippidis, who ran non-stop from the battle of Marathon to Athens. According to the legend, Pheidippidis took part in the battle, and then ran from Marathon to Athens, approximately 25 miles, to announce the victorious outcome of the battle.
The first modern Olympic marathon, held in 1908, began at Windsor Castle, London, and it ended at the White City Stadium, resulting in a total distance of 26.2 miles.