Kona Live Blog: Thursday From The Big Island Thursday will include coverage of the Kona Underpants Run, Science of Speed presentation, the pro press conference and more! Facebook Icon Twitter Icon Email Icon The original Underpants Run takes place in Kona before the Ironman World Championship each year. Photo: John David Becker Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app.