Leon’s Triathlon Hammond, Ind. | June 6, 2027 Hosted alongside the USA Triathlon Military and First Responders National Championships, Leon’s Triathlon is known as “America’s Race” and is dedicated to the support and empowerment of U.S. service men and women, particularly injured military veterans. The event is held just 20 minutes outside of Chicago and is a part of the Chicagoland Tri Series, which has hosted some of the country’s largest adaptive and paratriathlon-supportive races.