| W | World Outdoor 2025 | 43.03 | Wayne van Niekerk | RSA | 8/14/2016 | Rio de Jameiro, BRA |
| A | American Outdoor 2025 | 43.18 | Michael Johnson | Nike | 8/26/1999 | Seville, ESP |
| C | College Outdoor 2025 | 43.61 | Michael Norman | So. California | 6/8/2018 | Eugene, OR |
| N | NEC championship | 45.91 | Richard James | Long Island | 2003 | |
| I | IC4A | 49.04 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 1 | 426 | TATIS, JULIO | FR | WAGNER |
48.67 |
| 2 | 304 | RICHARDSON, LANGSTON | SO | LIU |
48.65 |
| 3 | 364 | DOUGHERTY, JACK | SO | STONEHILL |
48.27 |
| 4 | 307 | SCOTT, ELEHCHIO | JR | LIU |
48.51 |
| 5 | 204 | FIGUIEREDO, LUCAS | FR | CENTRAL CONNECTICUT |
47.06 |
| 6 | 197 | COLANGELO, NOAH | SO | CENTRAL CONNECTICUT |
47.27 |
| 7 | 221 | PHILLIP, KYMOY | JR | CENTRAL CONNECTICUT |
48.58 |
| 8 | 424 | SINGH, ARJANVIR | JR | WAGNER |
48.32 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 289 | ZAJDEL, CHRISTOPHER | FR | LE MOYNE |
48.79 |
| 3 | 307 | SCOTT, ELEHCHIO | JR | LIU |
47.84 |
| 4 | 339 | PARMELEE, JAMES | JR | SAINT FRANCIS |
51.36 |
| 5 | 340 | PERSING, TYLER | FR | SAINT FRANCIS |
52.24 |
| 6 | 248 | SHERIDAN, KAI | FR | CHICAGO STATE |
49.85 |
| 7 | 224 | ROBERTSON, COLE | SO | CENTRAL CONNECTICUT |
49.26 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 398 | AKINOLA, DAVID | FR | WAGNER |
53.14 |
| 3 | 426 | TATIS, JULIO | FR | WAGNER |
47.67 |
| 4 | 351 | ANDERSON, MATT | FR | STONEHILL |
50.49 |
| 5 | 281 | JOHNSON, JORDAN | SR | LE MOYNE |
51.30 |
| 6 | 191 | BROWN, JAYDEN | FR | CENTRAL CONNECTICUT |
49.05 |
| 7 | 221 | PHILLIP, KYMOY | JR | CENTRAL CONNECTICUT |
48.82 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 204 | FIGUIEREDO, LUCAS | FR | CENTRAL CONNECTICUT |
47.47 |
| 3 | 302 | PHILLIPS, KYJAHMY | JR | LIU |
54.73 |
| 4 | 257 | GRESHAM, JOSHUA | FR | FDU |
48.89 |
| 5 | 424 | SINGH, ARJANVIR | JR | WAGNER |
48.97 |
| 6 | 304 | RICHARDSON, LANGSTON | SO | LIU |
51.00 |
| 7 | 273 | WISE, TYLER | FR | FDU |
51.16 |
| 8 | 237 | DICKSON, COREY | FR | CHICAGO STATE |
53.75 |
| Lane | # | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|---|
| 2 | 294 | DESAI, LEKH | JR | LIU |
51.40 |
| 3 | 197 | COLANGELO, NOAH | SO | CENTRAL CONNECTICUT |
48.35 |
| 4 | 234 | BROOKS, MATTHEW | FR | CHICAGO STATE |
49.69 |
| 5 | 364 | DOUGHERTY, JACK | SO | STONEHILL |
48.73 |
| 6 | 297 | HERNANDEZ, DANIEL | SR | LIU |
49.75 |
| 7 | 286 | SCOTT, BRANDON | SR | LE MOYNE |
51.48 |