What is an IronKid? An IronKid is a youth who is inspired and motivated through sport to lead an active, positive and healthy lifestyle. Founded in 1985, the IronKids National Triathlon is the premier youth race series in the United States. Seven-time Tour de France champion Lance Armstrong is a past IronKid. Thousands of kids in the United States aspire to compete in these IronKids races that are organized across the country.