The length of a standard marathon race is 42.195 kilometers (or approximately 26.2 miles). This distance was standardized early in the 20th century, and it has remained consistent for marathon events worldwide. The marathon is a true test of endurance, requiring dedicated training and preparation. It is a popular event globally, with significant races held in cities across the countries, including the famed Boston and New York City Marathons, attracting thousands of runners annually.