Ironman Chattanooga, where athletes from around the world come to test their limits in the beautiful city of Chattanooga, Tennessee. The swim portion of the course takes place in the Tennessee River, where athletes will experience a strong current pushing them downstream. The 2.4-mile swim is a point-to-point course, starting at the boat ramp in the stunning Chickamauga Dam and finishing at Ross’s Landing Park in the heart of downtown Chattanooga. The water temperature is typically around 72 ...