Welcome to the Half Ironman 70.3 Tulsa, an epic triathlon event set in the heart of Oklahoma! This race is not for the faint of heart, as athletes from around the world come to Tulsa to push their physical limits and experience the thrill of intense, high-stakes competition. The race begins with a 1.2-mile swim in the cool, refreshing waters of Keystone Lake. Swimmers will dive in and navigate their way through the picturesque lake, surrounded by lush forests and scenic hillsides. With the ...