Competitors beginning the swimming phase of the Ironman World Championship triathlon in w:Kailua, Hawaii County, HawaiiKailua-Kona, Hawaii, 2005



  • An extremely tough and strong athlete, especially one who competes in extreme athletic competitions or in a large number of games consecutively.
  • A form of surf lifesaving competition which combines swimming, board paddling, ski paddling and running.
  • An extreme form of triathlon, expecially one organised by the World Triathlon Corporation that comprises a 2.4 mile swim, a 112 mile bike race and a marathon run.
  • The winner of such a lifesaving event or triathlon.


  • From iron + man. First applied to Joe McGinnity, a baseball player who pitched 48 complete games in one season and worked in an iron foundry during the offseason.

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