Athletes travel the world to swim, bike and run in the biggest Ironman triathlons around the world, including Ironman World Championship in Kona, HI. Get the scoop on a few Ironman race courses.
The Ironman World Championship is the ultimate test of mind, body and spirit. Only the best triathletes converge on Kailua-Kona, HI, to embark on this 146.6-mile journey. Officially, there are 63 half-Ironman triathlons and 31 full-Ironman triathlons held around the world -- the biggest competitions are the Ironman World Championship, Ironman European Champion, Ironman US Championship and Ironman Asia-Pacific Championship.