Olympia
| # | Mannschaft | Zeit | |
|---|---|---|---|
| 1 |  | Shaunae Miller-Uibo | 48.36s |
| 2 |  | Marileidy Paulino | 49.20s |
| 3 |  | Allyson Felix | 49.46s |
| 4 |  | Stephenie McPherson | 49.61s |
| 5 | | Candice McLeod | 49.87s |
| 6 |  | Jodie Williams | 49.97s |
| 7 | | Quanera Hayes | 50.88s |
| 8 |  | Roxana Gomez | DNF |
| # | Mannschaft | Zeit | |
|---|---|---|---|
| 1 | | Shaunae Miller-Uibo | 48.36s |
| 2 | | Marileidy Paulino | 49.20s |
| 3 | | Allyson Felix | 49.46s |
| 4 | | Stephenie McPherson | 49.61s |
| 5 | | Candice McLeod | 49.87s |
| 6 | | Jodie Williams | 49.97s |
| 7 | | Quanera Hayes | 50.88s |
| 8 | | Roxana Gomez | DNF |
