| Stadium | 50.46 | Yuki Matsushita | Mizuno (Japan) | 3/24/2018 | |
| Westmont | 51.73 | Phil Pitney | Westmont | 5/10/1986 |
| PL | Athlete | Team | Time |
|---|---|---|---|
| 1 | BUZZARD, Crusoe | Westmont |
55.31 |
| 2 | STYLES, Jaden | Allan Hancock | 57.65 |
| 3 | HANNA, Isaiah | Westmont |
58.71 |
| 4 | JONES, Isaac | Westmont |
1:01.67 |
| GUILLEN, Grayson | Westmont |
DNS | |
| CLANTON, Ty | The Master's |
DNS |
| HPL | Athlete | Team | Time |
|---|---|---|---|
| 1 | BUZZARD, Crusoe | Westmont | 55.31 |
| 2 | STYLES, Jaden | Allan Hancock | 57.65 |
| 3 | HANNA, Isaiah | Westmont | 58.71 |
| 4 | JONES, Isaac | Westmont | 1:01.67 |
| GUILLEN, Grayson | Westmont | DNS | |
| CLANTON, Ty | The Master's | DNS |