The 2012 Ironman World Championship was a long distance triathlon competition held on October 13, 2012 in Kailua-Kona, Hawaii. The championship won by Pete Jacobs of Australia and Leanda Cave of England. It was the 36th such Ironman Triathlon World Championship, which has been held annually in Hawaii since 1978, with an additional race in 1982. The championship is organized by the World Triathlon Corporation (WTC).