| Boy's 400 Meter Dash (Prelim) | Heat 1 Splits |
|---|
| Place | Athlete Name | 200m | 400m | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Isaiah Duke Edmond Maroons | 23.07 (1) 23.07 | 49.57 (1) 26.51 | |||||||||||||
| 2 | Daniel Anderson Springfield Speedsters | 24.33 (2) 24.33 | 51.12 (2) 26.80 | |||||||||||||
| 3 | Harrison Evert Unattached | 26.36 (4) 26.36 | 57.31 (3) 30.96 | |||||||||||||
| 4 | Breon Murry St. Louis Lightning Track Club | 26.75 (5) 26.75 | 59.00 (4) 32.26 | |||||||||||||
| 5 | Dominic Jackson Dallas Skyline | 25.68 (3) 25.68 | 59.88 (5) 34.20 |