| W | World Outdoor 2024 | 45.94 | Karsten Warholm | NOR | 8/3/2021 | Tokyo, JPN |
| A | American Outdoor 2024 | 46.17 | Rai Benjamin | Nike | 8/3/2021 | Tokyo, JPN |
| C | College Outdoor 2024 | 47.56 | Rai Benjamin | So. California | 6/8/2018 | Eugene, OR |
| N | NEC championship | 51.54 | Jim Baughman | Robert Morris | 2000 | |
| I | IC4A | 53.98 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 1 | 267 | ROTONDI, ALEXANDER | FR | SACRED HEART |
57.53 |
| 2 | 178 | HICKEY, BLAKE | JR | MERRIMACK |
57.39 |
| 3 | 362 | MORIN, ANDREW | SR | STONEHILL |
56.84 |
| 4 | 34 | MEISENKOTHEN, ALEX | FR | CENTRAL CONNECTICUT |
55.79 |
| 5 | 14 | CZARNECKI, MAXWELL | FR | CENTRAL CONNECTICUT |
54.97 |
| 6 | 400 | RODNEY, DANTE | SO | WAGNER |
56.45 |
| 7 | 7 | AGWU, KENNY | SO | CENTRAL CONNECTICUT |
56.61 |
| 8 | 94 | FRISA, MATTHEW | JR | LE MOYNE |
57.21 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 277 | SUTER, DOUGLAS | SO | SACRED HEART |
59.44 |
| 3 | 178 | HICKEY, BLAKE | JR | MERRIMACK |
57.69 |
| 4 | 7 | AGWU, KENNY | SO | CENTRAL CONNECTICUT |
57.06 |
| 5 | 400 | RODNEY, DANTE | SO | WAGNER |
55.70 |
| 6 | 94 | FRISA, MATTHEW | JR | LE MOYNE |
56.23 |
| 7 | 402 | SEAWRIGHT, MICHAEL | FR | WAGNER |
1:00.10 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 14 | CZARNECKI, MAXWELL | FR | CENTRAL CONNECTICUT |
54.93 |
| 3 | 267 | ROTONDI, ALEXANDER | FR | SACRED HEART |
58.42 |
| 4 | 34 | MEISENKOTHEN, ALEX | FR | CENTRAL CONNECTICUT |
56.41 |
| 5 | 362 | MORIN, ANDREW | SR | STONEHILL |
56.89 |
| 6 | 227 | DORIO, KEVIN | FR | SACRED HEART |
1:06.27 |
| 7 | 110 | ZELTMANN, SPENCER | JR | LE MOYNE |
58.92 |
| 8 | 230 | FRY, NAVON | SO | SACRED HEART |
1:02.23 |