| M | NHIAA Division I | 37.98 | Billy Powers | Winnacunnet | 2018 |
| S | NHIAA State Records | 37.71 | D'Mahl McFadden | Merrimack Valley | 2011 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | CAMPBELL, Evan | SR | Portsmouth | 43.56 | Seacoast Tri Meet |
| 2 | CHONG, Christopher | FR | Bedford | 43.14 | Bedford vs. Bishop Guertin |
| 3 | O'MARA, Jonas | SR | Keene | 42.98 | Keene/Bedford |
| 4 | HALEY, Jake | SO | Portsmouth | 42.95 | Seacoast Tri Meet |
| 5 | BECK, William | SR | Bedford | 43.11 | Keene vs. Bedford |
| 6 | MCDONALD, Patrick | SR | Bedford | 43.35 | Keene vs. Bedford |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | DAMIS, Eden | JR | Nashua South | 42.70 | Merrimack - South |
| 2 | RIPPERGER, Ian | JR | Portsmouth | 42.31 | Mini Meet %235 at Oyster River |
| 3 | OLSEN, Rory | SO | Nashua South | 41.61 | North Invite |
| 4 | POULIN, Michael | SR | Exeter | 40.33 | Seacoast Tri Meet |
| 5 | D'ENTREMONT, Patrick | SR | Winnacunnet | 41.70 | Oyster River Mini Meet 5/14 |
| 6 | FOSTER, Bryce | JR | Manchester Memorial | 42.56 | Nashua North Invite |