For those looking for a new challenge, the Iron Man competition is coming to Cancun, this September, and now would be a good time to start preparing for it. This event will be a "half" Iron Man, with the distances of the full Iron Man cut in half; still, it's challenging enough, with a 1.2 Km swim; followed by a 56 Km bike ride, followed by a 21.1 Km run, done one after the other, without breaks. For more details, see this link- Cancun Ironman 2009 [I know it says 2009, but'll it'll take you to 2010!]