The 1998 IAAF World Road Relay Championships was the fourth and final edition of the global, international marathon relay competition, organised by the International Association of Athletics Federations (IAAF). The event took place on 18–19 April in Manaus, Brazil with the participation of 222 athletes from 28 nations. The women's race took place on Saturday 18 April, starting at 9:00 AM Amazon Standard Time, and featured twelve national teams comprising a total 72 athletes. The men's race took place on Sunday 19 April, also starting at 9:00 AM Amazon Standard Time, and featured 25 national teams comprising a total 150 athletes.