| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Moore, Maxwell B (18)
|
VACA-Y |
52.30 |
53.55 |
1.25 |
| 2 |
Widzisz, Owen A (17)
|
VALY |
51.52 |
54.05 |
2.53 |
| 3 |
Schonfelder, Maxwell C (17)
|
VALY |
52.18 |
54.27 |
2.09 |
| 4 |
Wang, Richard H (16)
|
VACA-Y |
50.87 |
54.81 |
3.94 |
| 5 |
Hottle, Davis M (16)
|
VALY |
53.88 |
57.47 |
3.59 |
| 6 |
Zhu, Aiden (17)
|
VACA-Y |
55.84 |
57.78 |
1.94 |
| 7 |
Rogers, Andrew B (18)
|
VALY |
55.71 |
58.79 |
3.08 |
| 8 |
Olson, Thomas S (17)
|
VACA-Y |
58.97 |
59.83 |
0.86 |
| 9 |
Stevenson, Declund J (16)
|
VALY |
59.41 |
1:00.09 |
0.68 |
| 10 |
Snyder, Avery M (15)
|
VALY |
1:01.28 |
1:00.67 |
-0.61 |
| 11 |
Roberts, Samuel M (15)
|
VACA-Y |
1:17.99 |
1:05.31 |
-12.68 |