| W | World Outdoor | 52.34 | Yuliya Pechenkina | RUS | Tula, RUS | |
| J | World/ U-20 | 53.60 | Sydney McLaughlin | USA | 4/27/2018 | Fayetteville, AR |
| C20 | Carifta/ U-20 | 56.22 | Shiann Salmon | JAM | 4/1/2018 | Nassau, BAH |
| PL | JD | # | Athlete | Age | Team | Time |
|---|---|---|---|---|---|---|
| 1 | 342 | DAVIS, QUAYCIAN | 14 | JAM | 1:00.78 | |
| 2 | 359 | REID, SASHEL | 16 | JAM | 1:01.59 | |
| 3 | 116 | DEAN, RESHAE | 15 | BAH | 1:03.52 | |
| 4 | 492 | BRUCE, XEA | 15 | TTO | 1:09.77 | |
| 5 | 42 | BERNARD, TIA | 15 | CAY | 1:16.18 | |
| 6 | 43 | BONILLE, NAHOMY | 16 | CAY | 1:17.59 | |
| 411 | ROMNEY, KENEAH | 16 | SKN | DNS |
| HPL | JD | # | Athlete | Age | Team | Time | Note |
|---|---|---|---|---|---|---|---|
| 1 | 342 | DAVIS, QUAYCIAN | 14 | JAM | 1:00.78 | ||
| 2 | 359 | REID, SASHEL | 16 | JAM | 1:01.59 | ||
| 3 | 116 | DEAN, RESHAE | 15 | BAH | 1:03.52 | ||
| 4 | 492 | BRUCE, XEA | 15 | TTO | 1:09.77 | ||
| 5 | 42 | BERNARD, TIA | 15 | CAY | 1:16.18 | ||
| 6 | 43 | BONILLE, NAHOMY | 16 | CAY | 1:17.59 | ||
| 411 | ROMNEY, KENEAH | 16 | SKN | DNS |