| Place | Swimmer | Age | Club | Time | Std | Power pts |
|---|---|---|---|---|---|---|
| 1 | Eric Gabbassof | 16 | PCPASA | 49.28 | — | 850 |
| 1 | Ethan Harrington | 15 | PCPASA | 50.22 | — | 866 |
| 1 | Shogo Moridaira | 19 | CAUCSB | 51.16 | — | — |
| 1 | Arthur Balva | 15 | CAUNAT | 52.56 | — | 755 |
| 2 | Henry Gibbs | 15 | PCPASA | 53.20 | — | 729 |
| 1 | Chad Morrison | 17 | SITAC | 53.31 | — | 648 |
| 3 | Matthew Honeck | 16 | PCUN-3 | 54.73 | — | 621 |
| 1 | Nicholas Chao | 18 | PCPASA | 55.01 | — | 586 |
| 1 | Kaia Li | 16 | PCPASA | 58.79 | — | 670 |
| 2 | Nicolas Ling | 17 | PCPASA | 59.19 | — | 473 |
| 1 | Silvia Faraboschi | 16 | CAUN-1 | 59.64 | — | 642 |
| 1 | Alexis Schaffer | 15 | CAUN-0 | 59.75 | — | 653 |
| 2 | Emma Manhire | 16 | PCPASA | 1:04.50 | — | 508 |
| 1 | Juliana Steil | 17 | PCPASA | 1:06.41 | — | 456 |