400m / Women
vendredi 25 mai 2018 – samedi 26 mai 2018
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Shaunae Miller-Uibo | Bahamas | 49.52″ |
| 2 |  Phyllis Francis | United States | + 1.29″ |
| 3 | Shakima Wimbley | United States | + 1.32″ |
| 4 | Jessica Beard | United States | + 1.37″ |
| 5 |  Stephenie McPherson | Jamaica | + 1.49″ |
| 6 | Jaide Stepter | United States | + 1.65″ |
| 7 | Courtney Okolo | United States | + 2.02″ |