At 37, Craig Alexander can already look back on a magnificent triathlon career. The Australian, regarded as one of the nicest guys on the circuit, is one of only four men to win back-to-back Ironman World Championships in Kona, Hawaii (2008 and 2009
. She has been involved in triathlon for 28 years and this year raced in her eighth Ironman World Championship.9. Calorie countNutrition errors can have an enormous impact on your Ironman experience. Ben Bigglestone of Vo2 Max Coaching in Portland
