Chris McCormack, aka Macca, is one of the best-known triathletes in the world. He won the 2007 Ironman World Championship after six attempts, gaining notoriety as perhaps the hardest working and most singularly-focused athlete in triathlon. In addition to his Ironman glories, Macca is well-known on the social media scene. He's an active Twitter user and will soon be launching MaccaX, a Web-based community and training initiative. In this interview, the Aussie talks about his use of social media and how it helps him professionally.

For those who follow the pros, you'll know that both Craig Alexander and Chris McCormack are having good year so far (knock on wood for them both). What I can't believe is how fast these guys can run. Of course there are other pro triathletes that are very fast as well, but Crowie and Macca can put a great swim, great bike and fast run together consistently.

I know I'm chiming in here about 3 months late, but I just finally caught the NBC Kona coverage over the weekend on Universal Sports. So here's my question:

Just interested to hear what people think about this. Obviously he is a different breed than most but I still can't imagine doing that.

As many of you know I went to the Ironman in Kona this year to support my brother Chris in his final prep, and on race day, meanwhile getting in some good training for Ironman Florida. Well, let me tell you it was quite a day out there full of excitement and plenty of emotion.