The Women's 400 m Freestyle race at the 2009 World Championships was held on 26 July at the Foro Italico in Rome, Italy.
References
Swimming at the 2009 World Aquatics Championships – Women's 400 metre freestyle Wikipedia(Text) CC BY-SA
The Women's 400 m Freestyle race at the 2009 World Championships was held on 26 July at the Foro Italico in Rome, Italy.