| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 1 | Taravella | A | Tillman, Sterling | Russ, Jacquez | Edmonds, Tristan | Liria, Ephraim | 43.58 |
| 2 | John I. Leonard | A | Thompson, Kaleel | Heriscar, Briant | Grant, Shavary | Saunders, Christian | 43.43 |
| 3 | Park Vista | A | Davis, Jalon | Rizzo, Diamenn | Jean, Joshua | Desir, Clifford | 43.06 |
| 4 | Palm Beach Central | A | Hamilton, William | Cruickshank, Derrick | Hope, Jayden | Oliver, Gen’Taris | 42.91 |
| 5 | Martin County | A | Pond, Blake | Pelletier, Riley | Finnigan-Lucas, Spencer | Johnson, Zhimarlas | 42.97 |
| 6 | Atlantic (Delray) | A | Bush, Jose | Jackson, Javon | Davis, Joshua | Baxter, Johathan | 43.13 |
| 7 | Douglas | A | Trujillo, Justin | Porter, Winfred | Powell, Stephen | Kraft, Tyler | 43.48 |
| 8 | Vero Beach | A | Bethel, Wendell | Woulard, keith | McCartney, Stephfon | Primus, Winston | 43.69 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Palm Beach Gardens | A | Smith, Sebastian | Ivory, Ja'Ketrius | Maligno, Robert | Crapps, Daishanell | 44.66 | FHSAA 4A District 10 (4/15/2019) |
| 2 | Taravella | A | Tillman, Sterling | Russ, Jacquez | Edmonds, Tristan | Liria, Ephraim | 44.44 | FHSAA 4A District 12 (4/10/2019) |
| 3 | Atlantic (Delray) | A | Bush, Jose | Jackson, Javon | Davis, Joshua | Baxter, Johathan | 43.80 | FHSAA 4A District 11 (4/17/2019) |
| 4 | Palm Beach Central | A | Hamilton, William | Cruickshank, Derrick | Hope, Jayden | Oliver, Gen’Taris | 43.05 | FHSAA 4A District 10 (4/15/2019) |
| 5 | Park Vista | A | Davis, Jalon | Rizzo, Diamenn | Jean, Joshua | Desir, Clifford | 43.75 | FHSAA 4A District 11 (4/17/2019) |
| 6 | Jupiter | A | Dillard, Joshua | Faminial, Troy | Mylan, Antonio | Zabriski, Lathen | 44.03 | FHSAA 4A District 10 (4/15/2019) |
| 7 | Treasure Coast | A | Baker, Malachi | Desir, Arist | Fluery, Ricky | Miller, Sean | DNS | FHSAA 4A District 9 (4/10/2019) |
| 8 | Coral Springs | A | Hall, Ky | McKenzie, Zakai | Givens, Shemmar | Baron, Erik | 45.94 | FHSAA 4A District 12 (4/10/2019) |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Melbourne | A | Shaw, Jordaine | Lima, Cristian | Simmons, Jabarie | Wright Jr, Antonio | 44.73 | FHSAA 4A District 9 (4/10/2019) |
| 2 | John I. Leonard | A | Thompson, Kaleel | Heriscar, Briant | Grant, Shavary | Saunders, Christian | 44.48 | FHSAA 4A District 10 (4/15/2019) |
| 3 | Monarch | A | Alexis, Jaden | Corcoran, Joshua | Harris, Isaiah | Grennell, Giovanni | 43.92 | FHSAA 4A District 12 (4/10/2019) |
| 4 | Douglas | A | Trujillo, Justin | Porter, Winfred | Powell, Stephen | Kraft, Tyler | 43.42 | FHSAA 4A District 12 (4/10/2019) |
| 5 | Martin County | A | Pond, Blake | Pelletier, Riley | Finnigan-Lucas, Spencer | Johnson, Zhimarlas | 43.48 | FHSAA 4A District 9 (4/10/2019) |
| 6 | Boca Raton | A | Mode, Paul | Beliard, Mathew | Jenkins, Deltavian | Faustino, Rashawn | DNS | FHSAA 4A District 11 (4/17/2019) |
| 7 | Vero Beach | A | Bethel, Wendell | Woulard, keith | McCartney, Stephfon | Primus, Winston | 44.58 | FHSAA 4A District 9 (4/10/2019) |
| 8 | Forest Hill | A | Bernard, Major | Eaton, Charles | Henderson, Javario | Moreland, Michael | 44.74 | FHSAA 4A District 11 (4/17/2019) |