Ironman 70.3 Arizona, located in the sunny city of Tempe, where athletes come to test their endurance in one of the most challenging triathlons in the world. The race starts with a 1.2-mile swim in the pristine waters of Tempe Town Lake. Athletes will have to navigate through a rectangular course, surrounded by stunning views of the Arizona mountains. But don't let the scenery distract you, as the water temperature can reach a chilly 62°F, so be ready to brave the cold. Once you've conquered ...