The 2015 Ironman World Championship was a long distance triathlon competition held on October 10, 2015 in Kailua-Kona, Hawaii and won by Jan Frodeno of Germany and Daniela Ryf of Switzerland.

The championship was organized by the World Triathlon Corporation (WTC) and awarded a total purse prize of $650,000.

The change was made to accommodate for the increased number of qualifying slots created from the newly added full Ironman events.

[7][8] According to Florida law, the state where the World Triathlon Corporation resides, it is illegal to set up and charge for a lottery.

[9] Because WTC charged a $50 fee to enter the lottery, instead of giving away the opportunity to win a slot at the championships, they were in violation of this law.

[10] Following the complaint WTC cooperated with the United States Attorneys office and the FBI's investigation of the matter and agreed to forfeit $2,761,910, the amount collected from the lottery since October 24, 2012.