IRONMAN 70.3 Louisville 2026

IRONMAN 70.3 Louisville begins with a swim in the Ohio River, followed by a half-distance triathlon course in and around Louisville, Kentucky. This 70.3-mile race includes a swim, a bike ride, and a half-marathon run, designed for age-group triathletes and competitive athletes seeking an IRONMAN-branded finish. The event is presently paused due to road and highway construction in Jefferson County impacting sections of the course. Following the river swim, the bike course crosses Kentucky’s rolling hills, meaning the middle segment is not a simple flat city ride. The run returns athletes through downtown Louisville, utilizing historic streets and parks instead of a closed loop outside the city. The current pause also highlights a practical aspect of this race: the roads are integral to its execution, and significant county construction can disrupt the entire course.