70.3 IRONMAN Chattanooga

About Us

IRONMAN 70.3 Chattanooga is a half-distance triathlon set in Chattanooga, Tennessee, featuring a 1.2-mile swim in the Tennessee River, a 56-mile bike course through the surrounding rolling countryside, and a 13.1-mile run along the riverfront and through downtown. Known for its fast swim current, spectator-friendly urban finish, and scenic but punchy bike terrain, the race delivers a balanced mix of speed and challenge. With strong community support and a lively race-week atmosphere, it has become a popular stop on the IRONMAN 70.3 circuit.