The standard distance of a marathon is 26.2 miles, or 42.195 kilometers. This distance was established in 1908 during the London Marathon, allowing runners to start at Windsor Castle and finish in front of the royal box at the Olympic Stadium. The marathon has become a symbol of endurance and athleticism, with countless events held globally each year. Runners participate for various reasons, including personal challenges, charity fundraising, and the pursuit of competitive records. Completing a marathon is often regarded as a significant achievement in the running community.