Well, it wasn't the Ironman, but I managed to do a sprint-length triathlon during our Hawaii trip last week (on 7/3/04) Here are the race results.
I wasn't quite adapted to the time zone and climate, and I was using our friend's not-too-fancy road bike, not my usual fancy racer. Even still, I had a reasonably good race, passing about 30 people on the bike after a wavy ocean swim to finish 30th overall (out of 150) and 5th in my age group (out of 14). For what it's worth, my time also puts me 5th in the age group below me (30-34) and 6th in the next one down (25-29), suggesting, perhaps, that I'm aging well.