Season-best marks by event
| # | Mark | Athlete | Yr | School | Dist |
|---|---|---|---|---|---|
| 1 | 1:00.61 | Paula Onyewuchi | 9 | Ridley | D1 |
| 2 | 1:01.42 | Ericka Chiles | 12 | Ridley | D1 |
| 3 | 1:02.18 | Maddie Fox | 12 | Conestoga | D1 |
| 4 | 1:03.08 | Bailey McDonald | 9 | Penncrest | D1 |
| 5 | 1:03.23 | Christabel Harris | 9 |
21 athletes · 400m · District 1
| Conestoga |
| D1 |
| 6 | 1:03.29 | Emaline Hausch | 9 | Penncrest | D1 |
| 7 | 1:04.63 | Claire Donnelly | 9 | Penncrest | D1 |
| 8 | 1:05.34 | Olivia Anderson | 10 | Harriton | D1 |
| 9 | 1:05.57 | Le'shae Douglas | 11 | Harriton | D1 |
| 10 | 1:06.73 | Isabella Snell | 12 | Conestoga | D1 |
| 11 | 1:06.88 | Audrey Hartman | 10 | Radnor | D1 |
| 12 | 1:07.64 | Grace Stumpf | 9 | Conestoga | D1 |
| 13 | 1:07.80 | Sarina Sankari | 10 | Catasauqua | D1 |
| 14 | 1:07.91 | Andie Fisk | 11 | Radnor | D1 |
| 15 | 1:08.67 | Ana Rodriguez-Ramos | 11 | Catasauqua | D1 |
| 16 | 1:08.85 | Rachel Bendl | 9 | Conestoga | D1 |
| 17 | 1:10.76 | A Rodriguez-Ramos | 11 | Catasauqua | D1 |
| 18 | 1:11.74 | Sofia Mascieri | 12 | Conestoga | D1 |
| 19 | 1:13.28 | Annika Johnson | 10 | Conestoga | D1 |
| 20 | 1:13.69 | Lucy Spangenberg | 9 | Penncrest | D1 |
| 21 | 1:18.30 | Grace Crotty | 10 | Penncrest | D1 |
