| Lane | # | Athlete | Team | Seed | Note | 
|---|---|---|---|---|---|
| 3 | 65 | SICKLES, Jacob | Morningside | 1:26.72 | 1:26.72 Frostproof - The Ridge Open 2023 (3/11/2023) | 
| 4 | 67 | PORRAS-GUTIERREZ, Sebastian | Morningside | 1:10.76 | 1:10.76 2023 Merritt Island Invite (3/31/2023) | 
| 5 | 58 | BOLINSKI, BRYCE | Jupiter Christian | 1:16.89 | 1:16.89 Westminster Acad Varsity Open 2 (4/11/2023) | 
| Lane | # | Athlete | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | 48 | PENNER, STUART | Jupiter Christian | 1:05.37 | 1:05.37 Martin County Sarge Invitational 2023 (3/31/2023) | 
| 2 | 157 | ITALIANO, Cameron | Pine School | 1:01.94 | 1:01.94 2023 Treasure Lake Conference (4/14/2023) | 
| 3 | 144 | REED, Tamari | Pine School | 58.54 | 58.54 2023 Treasure Lake Conference (4/14/2023) | 
| 4 | 181 | JOHNSON, Robert | Pahokee | 57.31 | 57.31 Glade Central Invitational 2023 (3/16/2023) | 
| 5 | 36 | BENHARDUS, Stephan | Oxbridge Academy | 58.38 | 58.38 Royal Palm Beach Invitational 2 (3/14/2023) | 
| 6 | 45 | DAGGS, Britton | Oxbridge Academy | 1:01.90 | 1:01.90 Benjamin Meet #2 2023 (4/01/2023) | 
| 7 | 154 | WAXIN, Wincent | Pine School | 1:05.11 | 1:05.11 Martin County Sarge Invitational 2023 (3/31/2023) | 
| Lane | # | Athlete | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | 108 | GARLAND, Brandon | Benjamin School | 56.55 | 56.55 2023 PALM LEAGUE CHAMPIONSHIPS (4/13/2023) | 
| 2 | 187 | BRYANT, Xavier | Pahokee | 52.92 | 52.92 Glade Central Invitational 2023 (3/16/2023) | 
| 3 | 138 | MACKEY, Jaden | John Carroll | 52.13 | 52.13 Benjamin Meet #2 2023 (4/01/2023) | 
| 4 | 104 | MAYS, Micah | Benjamin School | 48.11 | 48.11 Benjamin Meet #1 2023 (3/04/2023) | 
| 5 | 69 | GRANDE, Cole | Benjamin School | 50.91 | 50.91 2023 PALM LEAGUE CHAMPIONSHIPS (4/13/2023) | 
| 6 | 54 | LICATA, Joe | Jupiter Christian | 52.57 | 52.57 Martin County Sarge Invitational 2023 (3/31/2023) | 
| 7 | 202 | JONES, Da'Corrian | Pahokee | 54.09 | 54.09 Glade Central Invitational 2023 (3/16/2023) | 
| 8 | 24 | KAPP, Micah | Oxbridge Academy | 56.60 | 56.60 Park Vista Meet #1 (3/01/2023) |