Marathon events are long-distance running races that cover a distance of 26.2 miles (42.195 kilometers). These races are often held in cities around the world and attract both professional athletes and amateur runners. Participants train for months to prepare for the physical and mental challenges of completing a marathon. Marathons can vary in terms of terrain and weather conditions, making each event unique. Many marathons also include a variety of activities, such as 5K races and fun runs, to encourage community participation. Notable marathons include the Boston Marathon and the New York City Marathon, which are famous for their challenging courses and large crowds.