Saturday, October 10: 
Ironman World Championship.  Considered one of the most grueling one-day sporting events in the world, triathletes from around the world swim through the waters surrounding Kailua Pier, bike through Kona roads to the Kohala Coast and back, and run a marathon course that ends at Ali`i Drive with thousands of cheering spectators at the finish line. For information, visit www.ironman.com.