Sunburst Races, brought to you by Beacon Health System, presented by KeyBank, is the largest athletic event held annually in St. Joseph County. It encompasses a half marathon, a 10K run, a 5K run, and a 5K fitness walk. The Sunburst races are certified by the United States of America Track and Field governing body on all courses. People travel from across the United States and even from abroad to compete in Sunburst. It truly is a special event!