Join thousands of sports fans to witness the 9th annual Ironman Louisville presented by Norton Sports Health on October 11, 2015. More than 2500 athletes will transition from a 2.4 mile swim in the Ohio River to a 112 mile bike ride and a 26.2 mile run at Waterfront Park. Athletes from around the world will compete in the world's most challenging endurance event, pushing their mental and physical limits to reach the finish line at 4th Street Live! Be a part of the Ironman experience!