| M | NHIAA Division II | 49.45 | Stephen Duckett | Trinity | 2018 |
| S | NHIAA State Records | 48.24 | Noah Woodman | Pinkerton | 2017 |
| Athlete | Yr. | Team | Seed | Note | |
|---|---|---|---|---|---|
| 1 | WACHSMUTH, Connor | SR | Bow | 51.30 | John Stark |
| 2 | HEIGIS, Porter | SR | Coe-Brown | 52.02 | Pembroke Academy Home Meet |
| 3 | PARADIS, Keegan | SR | Coe-Brown | 52.68 | MiniElite6CBNA |
| 4 | KOTELLY, John | JR | Hollis/Brookline | 52.70 | 4-Team Meet @ Souhegan |
| 5 | MARTIN, Joaquin | FR | Hanover | 53.31 | Hanover |
| 6 | DEMAS, Gavin | SO | Coe-Brown | 53.90 | cbna |
| 7 | TALARICO, Nathan | SR | Sanborn Regional | 54.44 | SRHS 2021--Epping, Newmarket, Raymond |
| 8 | FLENNIKEN, Cole | SR | Windham | 55.03 | Salem |
| 9 | EREMITA, Nicholas | SO | Goffstown | 55.04 | Pinkerton |
| 10 | HAMELE, Dawson | SR | Souhegan | 55.32 | @Souhegan vs HB%2C Trinity and Sanborn |
| 11 | DICKINSON, Nolan | JR | Souhegan | 55.47 | Souhegan |
| 12 | FOGG, Landon | SO | Plymouth Regional | 55.78 | Winnisquam 5/22 |