Sentence:  “Every sense of your body is taken over by the climate,” said the New York City native Christopher Bergland, who set a record at triple <WSD>ironmans</WSD> (7.2-mile swim, 336-mile bike, 78.6-mile run) but failed to finish one of his three Badwater races. 
Meaning of the word marked with <WSD> tags:  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.