BEIJING, CHINA - AUGUST 27: Allyson Felix of the United States crosses the line to win gold in the Women's 400 metres Final during day six of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 27, 2015 in Beijing, China. (Photo by Lintao Zhang/Getty Images for IAAF)
| POS | ATHLETE | COUNTRY | MARK |
|---|---|---|---|
| 1 | Allyson FELIX |  USA |
49.26 |
| 2 | Shaunae MILLER |  BAH |
49.67 |
| 3 | Shericka JACKSON |  JAM |
49.99 |
