The women's 400m freestyle S9 event at the 2012 Summer Paralympics took place at the London Aquatics Centre on 4 September. There were two heats; the swimmers with the eight fastest times advanced to the final.

Results

Heats Competed from 10:19.

Heat 1 Rank Lane Name Nationality Time Notes1 4 Stephanie Millward 4:46.00 Q2 6 Amy Marren 4:53.04 Q3 3 Elizabeth Stone 4:53.05 Q4 5 Cai Yuqingyan 5:03.12 5 2 Katarina Roxon 5:17.03

Heat 2 Rank Lane Name Nationality Time Notes1 4 Natalie du Toit 4:32.59 Q2 5 Ellie Cole 4:53.01 Q3 6 Christiane Reppe 4:55.44 Q4 2 Lauren Steadman 4:56.23 Q5 3 Emily Gray 5:00.44 Q6 7 Shanntol Ince 5:27.88

Final Competed at 18:10. Rank Lane Name Nationality Time Notes 4 Natalie du Toit 4:30.18 5 Stephanie Millward 4:40.01 EU 3 Ellie Cole 4:42.87 OC4 6 Amy Marren 4:50.79 5 7 Christiane Reppe 4:53.93 6 1 Lauren Steadman 4:55.17 7 8 Emily Gray 4:59.77 8 2 Elizabeth Stone 5:02.76

'Q = qualified for final. EU = European Record. OC = Oceania Record.

References Official London 2012 Paralympics Results: Heats Official London 2012 Paralympics Results: Final