Just signed up for Ironman 70.3 Boulder for 2012. Did quite a bit of research and I am happy about this choice. It is a mere 16 hours from my home in Phoenix and a big elevation change. The water temp, however, is usually nice and warm and the run will be hot - not that I welcome hot runs (remember Soma) it's just that I will be doing most of my training in Phoenix this year so I should be used to the elevated temps... Wish me luck.