| R | MAC Outdoor Champ | 52.18 | Cal Williams | Dickinson | 1988 |
| MAC Outdoor Overall | 51.44 | Richie Weaver | Widener | 1970 |
| Lane | # | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|---|
| 2 | 736 | CLEMENT, Fritz | SO | Eastern |
58.65 | 58.65 (400m IH 58.65) Paul Donahue Invitational @ Widener University |
| 3 | 6 | ROBINSON, Connor | SR | Stevens |
58.02 | 58.02 (400m IH 58.02) Coach P Invite 2026 |
| 4 | 668 | TROY, Brody | JR | Delaware Valley |
57.52 | 2026 Danny Curran Invitational |
| 5 | 283 | GUTHIER, Bryce | JR | DeSales |
58.80 | 58.80 (400m IH 58.80) DeSales Quad Meet |
| 6 | 579 | APSLEY, Shaun | JR | York (Pa.) |
54.80 | 54.80 (400m IH 54.80) SU Mid-Week PR Bonanza 2026 |
| 7 | 735 | JONES, Keyon | SO | Eastern |
55.50 | 55.50 (400m IH 55.50) Paul Donahue Invitational @ Widener University |
| 8 | 370 | SMITH, Shakei | JR | Misericordia |
59.93 | 59.93 (400m IH 59.93) King's College Monarch Open |
| Lane | # | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|---|
| 2 | 942 | DIEFFENBACH, Lewis | FR | Lebanon Valley |
59.46 | 59.46 (400m IH 59.46) York College Twilight Meet |
| 3 | 956 | REIMERT, Alexander | SR | Stevenson |
56.03 | 56.03 (400m IH 56.03) Carpenter-Case Invitational |
| 4 | 166 | ERIKSON, Daniel | SR | Messiah |
58.47 | 58.47 (400m IH 58.47) 2026 Messiah Multi/Invitational |
| 5 | 717 | DAVIS, Shamar | JR | Eastern |
57.22 | 57.22 (400m IH 57.22) Paul Donahue Invitational @ Widener University |
| 6 | 477 | PEREZ, Connor | SO | Alvernia |
58.27 | 58.27 (400m IH 58.27) Coach P Invite 2026 |
| 7 | 410 | ANDRADE, Lorenzo | FR | Misericordia |
54.28 | 54.28 (400m IH 54.28) York College Twilight Meet |
| 8 | 301 | PHILLIPS, Aidan | SO | DeSales |
59.75 | 59.75 (400m IH 59.75) Coach P Invite 2026 |