The women's 400 metre individual medley competition of the swimming events at the 2011 World Aquatics Championships was held on July 31 with the heats the final. Records Prior to the competition, the existing world and championship records were as follows. Results Heats 36 swimmers participated in 5 heats. Final The final was held at 19:19. References External links 2011 World Aquatics Championships: Women's 400 metre individual medley start list, from OmegaTiming.com; retrieved 2011-07-23. Individual medley 400 metre, women's World Aquatics Championships 2011 in women's swimming