IRONMAN 70.3 Cozumel a triathlon experience in the sun-soaked paradise of Cozumel, Mexico, this race promises to be the ultimate test of endurance and athleticism, as competitors swim, bike, and run their way through some of the most breathtaking scenery in the world. The race begins with a 1.2-mile swim in the crystal-clear waters of the Caribbean Sea, where athletes will feel like they're swimming in an enormous aquarium filled with colorful tropical fish. With water temperatures hovering ...