Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The men's 400 metres hurdles at the 1988 Summer Olympics in Seoul, South Korea had an entrylist of 38 competitors, with five qualifying heats (38 runners) and two semifinals (16) before the final (8) took place on Sunday September 25, 1988. At the 1988 Summer Olympics in Seoul a total number of 42 events in athletics were contested: 24 by men and 18 by women. There were a total number of 1617 participating athletes from 149 countries.