Marathon running is a long-distance race that covers a distance of 26.2 miles (42.195 kilometers). It is typically held on roads and can be completed by both professional athletes and amateur runners. The marathon tests endurance, stamina, and mental strength, making it a popular event in many countries around the world. Training for a marathon usually involves a structured plan that includes long runs, speed work, and rest days. Many runners participate in local races or join running clubs to prepare. Major marathons, such as the Boston Marathon and New York City Marathon, attract thousands of participants and spectators each year.