Heats
mardi 26 juin 2018, 01h00 GMT – 01h00 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Grace Monahan | Hawaii | 28.21″ |
| 2 | Emily White | Australia | + 0.7″ |
| 3 | Sydnee Whitty | Hawaii | + 0.97″ |
| 4 | Rebecca Moynihan | New Zealand | + 1.24″ |
| 5 | Moana Wind | Fiji | + 1.6″ |
| 6 | Tilali Scanlan | American Samoa | + 1.8″ |
| 7 | Ann-Marie Hepler | Marshall Islands | + 2.19″ |
| 8 | Georgia-Leigh Vele | Papua New Guinea | + 2.74″ |
| 9 | Maile Lawson | United States | + 1.79″ |
| 10 | Britney Murray | Papua New Guinea | + 3.36″ |
| 11 | Jelani Wetzell | Samoa | + 3.39″ |
| 12 | Mineri Gomez | Guam | + 3.7″ |
| 13 | Margie Winter | Micronesia | + 3.79″ |
| 14 | Kestra Kihleng | Micronesia | + 4.25″ |
| 15 | Anthea Murray | Papua New Guinea | + 5.26″ |
| 16 | Roylin Akiwo | Palau | + 5.69″ |
| 17 | Jasmine O'Brien | Hawaii | + 2.85″ |
| 18 | Jourdyn Adams | Micronesia | + 5.79″ |
| 19 | Kayla Helper | Marshall Islands | + 6.54″ |
| 20 | Nicole Adams | Micronesia | + 7.54″ |
| 21 | Neolani Day | Tonga | + 8.06″ |
| 22 | Sophia Gauran | Northern Mariana Islands | + 8.72″ |
| 23 | Kirsten Fisher-Marsters | Cook Islands | + 3.17″ |