Fox Valley Marathon

Fox Valley Marathon, held on September 21, 2025, in St. Charles, Illinois, is a flat and fast event that takes runners through the scenic towns along the Fox River. The course includes towns, bridges, waterfalls, parks, river paths, and even an authentic Dutch windmill, providing a mix of urban charm and natural beauty. With its well-shaded route, runners can enjoy a cooler environment during the race.\n\nThe event features multiple distances, including a full marathon, half marathon, 5K, and Fa