What is an evernt where athlets swim run and bike?

The Olympic triathlon consists of a 1.5 kilometer swim, followed by a 40km bike ride, and then a 10km run. After a mass start, the race remains continuous, with no stops in between the three legs. Therefore, fast transitions between legs are critical to a good race performance.

* http://running.about.com/od/olympics/a/whatistriathlon.htm