The official distance of a marathon is 26.2 miles (42.195 kilometers). This standardized distance has been established by the International Association of Athletics Federations and is used in all official marathon events worldwide. The marathon’s origins trace back to ancient Greece, stemming from the legendary run of Pheidippides. Over the years, this challenging distance has become a popular goal for both amateur and elite runners, symbolizing endurance, perseverance, and the remarkable human spirit in the face of physical challenges.