Welcome to IRONMAN 70.3 Boulder, where the air is thin, but the competition is thick! It's the triathlon event that takes you on a tour of Boulder, Colorado, leaving you breathless—both from the altitude and the sheer awesomeness of the race. Let's kick things off with the swim, where athletes will channel their inner aquatic superheroes by plunging into Boulder Reservoir from the east boat ramp. It's like entering a liquid fortress of fitness. The swim course is so counterclockwise that even ...