| S | NHIAA State Records | 48.24 | Noah Woodman | Pinkerton | 2017 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | BRADLEY, Aidan | SO | Hanover | 52.88 |
| 2 | SMITH, Zackary | SO | Pinkerton | 52.47 |
| 3 | THIBEAULT, Alex | SR | Nashua South | 52.43 |
| 4 | SALTMARSH, Peyton | SR | Winnacunnet | 52.21 |
| 5 | MOUSSEAU, Sullivan | SR | Laconia | 52.32 |
| 6 | HODGE, Zach | SR | Kearsarge | 52.46 |
| 7 | THAPA, Bishow | JR | Merrimack Valley | 52.71 |
| 8 | BRUNEAU, Henry | JR | Hollis/Brookline | 52.88 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | CHAUDHRY, DJ | JR | Campbell | 51.49 |
| 2 | KOTELLY, John | SR | Hollis/Brookline | 51.06 |
| 3 | CARNEY, Owen | SR | Inter-Lakes | 50.34 |
| 4 | ASH, Brady | JR | Sanborn | 49.98 |
| 5 | CLEGG, Sean | JR | Londonderry | 50.24 |
| 6 | DOROW, Ty | JR | Oyster River | 50.45 |
| 7 | DEMAS, Gavin | JR | Coe-Brown | 51.45 |
| 8 | NOLAN, Erik | JR | Keene | 51.78 |