| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Hatcher, Max C (12)
|
NTNTN |
19:47.72 |
17:33.00 |
-134.72 |
| 2 |
Huenefeld, James C (14)
|
LABAC |
19:02.84 |
18:01.24 |
-61.60 |
| 3 |
Conner, Brennon Z (14)
|
LACOLA |
19:43.97 |
18:50.18 |
-53.79 |
| 4 |
Gettys, Weslee B (11)
|
STGOLD |
19:10.87 |
19:05.25 |
-5.62 |
| 5 |
Fulton, Caelan J (13)
|
GUMAC |
19:26.64 |
19:46.94 |
20.30 |
| 6 |
Wiedemeier, Adam D (13)
|
LABAC |
19:55.92 |
19:58.60 |
2.68 |
| 7 |
Mayeaux, Caden A (14)
|
LACOSS |
20:15.99 |
20:19.15 |
3.16 |
| 8 |
Barnard, Christopher R (13)
|
LACOSS |
20:15.99 |
20:45.37 |
29.38 |
| 9 |
Breithaupt, Truman A (13)
|
LAES |
20:15.99 |
21:13.15 |
57.16 |
| 10 |
Smith, Hilton H (14)
|
LABAC |
20:13.62 |
22:02.61 |
108.99 |
| 11 |
Duarte, Daniel A (13)
|
STGOLD |
20:11.89 |
22:30.27 |
138.38 |