| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | Daune FLOURNEY | SR | Decatur Eisenhower | 1:08.80 | MHS 4/3/2023 |
| 3 | Matthew LOPEZ | SO | Murphysboro | 1:03.40 | Marion |
| 4 | Ethan SCHMIDT | JR | Triad | 1:00.38 | Winston Brown Invitational |
| 5 | Max WALKER | JR | Highland | 1:01.20 | Principia |
| 6 | Kevin BOOMER | FR | Decatur Eisenhower | 1:05.08 | MHS 4/3/2023 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Adrian GARES | FR | Civic Memorial | 58.50 | CM Triangular |
| 2 | Jack GROTEFENDT | JR | Highland | 58.10 | Highland Tri |
| 3 | Dewayne KING | FR | Carbondale | 57.36 | Duqoin open |
| 4 | Nicholas FUESS | SR | Mascoutah | 56.39 | Jacksonville IC Indoor |
| 5 | Jordan TAYLOR | FR | Collinsville | 57.09 | Triad |
| 6 | Dillan COWAN | SO | Alton | 57.47 | MadCo |
| 7 | Jeremy JACKSON | SO | Lanphier | 58.21 | Hickman invite |
| 8 | Declan BROWN | FR | Springfield | 59.64 | Taylorville Triangular |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Savion MITCHELL | SO | Belleville East | 55.30 | Triad |
| 2 | Matt PLUFF | SO | Freeburg | 55.04 | Columbia F/S Invitational |
| 3 | Miles VENHAUS | JR | Triad | 55.00 | Knight Invite |
| 4 | Zach WOOTEN | JR | Civic Memorial | 54.51 | Triad Invite |
| 5 | Kirk LANE | SO | East Alton-Wood River | 54.90 | |
| 6 | Justin MAYNOR | FR | Murphysboro | 55.01 | Sparta Buzz Bradley |
| 7 | Kameron STEELE | FR | Columbia | 55.11 | 2023 Bi County Invitational |
| 8 | Jacobe PATTERSON | SR | Lanphier | 56.25 | Collinsville Invitational |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Ayden HUET | SR | Rochester | 54.09 | ROCKET INVITE |
| 2 | Zion TAYLOR | SO | Cahokia | 53.71 | 2023 Military Classic |
| 3 | Justin KILLIAN | SR | Mascoutah | 53.67 | St. Clair County Meet |
| 4 | Ben WILCOXEN | JR | Glenwood | 53.27 | Triad Invite |
| 5 | Daniel PECORARO | SR | Glenwood | 53.30 | Triad invite |
| 6 | Antonio DEAN | FR | Granite City | 53.69 | Belleville West Norm Armstrong Invitational |
| 7 | David LEONARD | JR | St. Mary's (St. Louis) | 53.83 | Clayton High |
| 8 | Jonathan CORIELL | SR | Centralia | 54.15 | Triad Knight Invitational |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | DeAndre BROWN | FR | Springfield | 53.08 | Springfield City Meet |
| 2 | Alex UDER | JR | Edwardsville | 52.84 | Madison Co |
| 3 | Carson MUETH | JR | Columbia | 52.33 | Keith Hall Invite %28Wesclin%29 |
| 4 | Devion MONTGOMERY | SR | East St. Louis | 51.50 | BELLEVILLE%2C IL |
| 5 | Boen BROCKMILLER | SR | Quincy | 51.92 | Mark Twain/Becky Thatcher Relays |
| 6 | Brody SCHRAM | JR | O'Fallon | 52.80 | O%27Fallon |
| 7 | Declan HOEFERLIN | SO | Edwardsville | 52.90 | Madison Co |
| 8 | Garrick HOMAN | SR | Quincy | 53.17 | Rob Garcia CoEd |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Riley FRECH | SO | Freeburg | 51.48 | St. Clair County Meet |
| 2 | Troy MCCLEAN | SO | Belleville West | 51.37 | St. Clair County Meet |
| 3 | Quentin STEPNEY | SR | East St. Louis | 50.81 | BELLEVILLE%2C IL |
| 4 | Ramontay ABRAM | SR | Belleville West | 49.59 | Belleville West Norm Armstrong Invitational |
| 5 | Jaylen PENNINGTON | SO | Cahokia | 50.77 | ALTON FR/SO |
| 6 | Julian JOHNSON | SR | O'Fallon | 51.06 | St. Clair County Meet |
| 7 | Jalek NELSON | JR | Collinsville | 51.40 | CHS |
| 8 | Austin DEDECKER | JR | Carbondale | 51.50 | Duqouin open |