* Ironman Arizona * Ironman Coeur d'Alene * Ironman Florida * Ironman Louisville * Ironman St. George * Ironman USA in Lake Placid * Ironman Wisconsin *Ironman Hawaii There are 7 Ironman races on mainland U.S. Soil each year. The world championships take place in Kona Hawaii and that makes 8 U.S. Races. An average of about 13,500 people will compete in an Ironman race each year in the U.S. Most races have entry fields between 1500 and 2000. Most of the races will not have 2000 entries so 13,500 to 14,000 entries is most likely very close.