| M | NHIAA Division II | 56.26 | Kristie Schoffield | Merrimack Valley | 2015 |
| S | NHIAA State Records | 55.42 | Grace Devanny | Concord | 2019 |
| Athlete | Yr. | Team | Seed | Note | |
|---|---|---|---|---|---|
| 1 | THOMAS, Maya | SO | Goffstown | 1:01.62 | Pinkerton |
| 2 | HRICZ, Mia | SR | Oyster River | 1:02.01 | Mini Elite #6 @ Coe-Brown |
| 3 | LEMAY, Isabella | FR | Coe-Brown | 1:02.41 | CBNA |
| 4 | HURST, Paige | SR | Pelham | 1:02.44 | Pelham |
| 5 | NADIG, Jennifer | SR | Oyster River | 1:02.64 | OR |
| 6 | PIZZI, Kristina | SR | Bow | 1:03.50 | Coe Brown |
| 7 | TEDFORD, Lily | FR | Sanborn Regional | 1:03.90 | Sanborn and Derryfield @ Campbell |
| 8 | NELSON, Anabelle | SR | Kingswood | 1:04.84 | Kingswood |
| 9 | ST-GEORGE, Alina | FR | Milford | 1:05.37 | CV Home Meet: 4/13/21 |
| 10 | MACGRATH, Leslie | SR | Milford | 1:06.46 | CV Home Meet: 4/13/21 |
| 11 | DAVIS, Aida | FR | Con-Val | 1:07.24 | @ Pelham |
| 12 | TARSA, Juliette | FR | Bow | 1:08.95 | Pembroke |