Tri is the magic number

The Road To Beijing Congratulations to Michelle Dillon, who romped home to win the ITU World Duathlon Championships in Newcastle, Australia:

"The Elite Women?s race was fought hard with fantastic results with a 1,2,3 for Great Britain. Michelle Dillon (2:11.06) claimed the crown of World Female Duathlon Champion. Post race she said ?I had to dig deep to hammer that final 5km run, but the great crowd support got me to the finish line?.

Looking for that Wikipedia definition linked about, I discovered this reference to a Quadrathlon which also features a spot of kayaking or sometimes rollerskating. Surreal. [about]