A marathon is a long-distance running event that covers a distance of 26.2 miles, or 42.195 kilometers. It is typically held on roads and can be part of larger events, such as running festivals or charity races. Marathons are popular worldwide, attracting both professional athletes and amateur runners who train for months to complete the race. The origin of the marathon dates back to ancient Greece, specifically the legend of Pheidippides, a messenger who ran from the battlefield of Marathon to Athens to announce victory over the Persians. Today, marathons are celebrated for their physical and mental challenges, promoting fitness and community spirit.