The women's 400 metre individual medley event at the 1988 Summer Olympics took place between 18–19 September at the Jamsil Indoor Swimming Pool in Seoul, South Korea. Records Prior to this competition, the existing world and Olympic records were as follows. Results Heats Rule: The eight fastest swimmers advance to final A (Q), while the next eight to final B (q). Finals Final B Final A References External links Official Report USA Swimming Women's Individual Medley 400 metre Olympic Women's events at the 1988 Summer Olympics