The Women's 400 metre freestyle event at the 2008 Summer Olympics took place on 10–11 August at the Beijing National Aquatics Center. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consisted of eight lengths of the pool. Six heats were held, with most containing the maximum number of swimmers. The heat in which a swimmer competed did not formally matter for advancement, as the swimmers with the top eight times from the entire field qualified for the finals; there, they all competed in a single final heat to earn final placements. The qualifying norms were for the 2008 event were 4:11.26 and 4:20.05. NOCs with two or more swimmers meeting the A standard could enter any two such swimmers; otherwise, they could enter a single swimmer meeting the B standard. Wikipedia [ - ]

The Women's 400 metre freestyle event at the 2008 Summer Olympics took place on 10–11 August at... [ + ]