| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Hoye, Jonas (17)
|
MRLGAC |
17:25.09 |
16:32.94 |
-52.15 |
| 2 |
Bouzarouata, Zacharia M (18)
|
MRLGAC |
18:27.65 |
18:18.22 |
-9.43 |
| 3 |
Sungrab, Henry T (14)
|
MRLGAC |
19:04.67 |
18:31.96 |
-32.71 |
| 4 |
Tesovic, Maksim (17)
|
MRLGAC |
19:52.56 |
18:48.82 |
-63.74 |
| 5 |
Mezzoli, Davide (16)
|
MRLGAC |
18:43.71 |
18:49.48 |
5.77 |
| 6 |
Panamserkhang, Tenzin P (14)
|
MRLGAC |
18:47.16 |
18:59.22 |
12.06 |
| 7 |
Youssef, Mohamed S (16)
|
MRLGAC |
18:21.52 |
19:00.36 |
38.84 |
| 8 |
Sherpa, Nuru (15)
|
MRLGAC |
19:43.78 |
19:03.14 |
-40.64 |
| 9 |
Dwyer, Daniel P (16)
|
MRCIY |
21:28.99 |
19:05.37 |
-143.62 |
| 10 |
Luczaj, Oscar (14)
|
MRLGAC |
19:18.62 |
19:12.18 |
-6.44 |
| 11 |
Paragas, Luke E (16)
|
MRUNLG |
18:30.15 |
19:18.02 |
47.87 |
| 12 |
Haimson, Emma A (16)
|
MRLGAC |
19:30.86 |
19:18.71 |
-12.15 |
| 13 |
Martinez-Reyes, Tristinye J (15)
|
MRLGAC |
18:53.41 |
19:21.28 |
27.87 |
| 14 |
NG, Ryan Y (16)
|
MRLGAC |
18:59.97 |
20:03.94 |
63.97 |
| 15 |
Ou, Toby Y (17)
|
MRFLY |
|
20:14.93 |
- |
| 16 |
Alexander, Allyse I (17)
|
MRLGAC |
20:18.58 |
20:21.89 |
3.31 |
| 17 |
Akmatbaeva, Deniz (13)
|
MRLGAC |
20:07.65 |
20:28.73 |
21.08 |
| 18 |
Pusing, Ava Y (15)
|
MRLGAC |
20:03.47 |
20:30.84 |
27.37 |
| 19 |
Torres, Cassidy A (15)
|
MRLGAC |
20:21.86 |
20:36.24 |
14.38 |
| 20 |
Pusing, Aizel G (17)
|
MRLGAC |
19:22.08 |
20:41.31 |
79.23 |
| 21 |
Lim, Daniel (15)
|
MRFLY |
|
20:54.36 |
- |
| 22 |
Tenzin, Quinci R (15)
|
MRLGAC |
20:14.52 |
20:57.09 |
42.57 |
| 23 |
Mullin, Allison B (16)
|
MRLGAC |
19:47.03 |
21:21.58 |
94.55 |
| 24 |
Corcuera, Carolina D (16)
|
MRLGAC |
20:30.83 |
21:51.10 |
80.27 |
| 25 |
Lateng, Losel L (16)
|
MRLGAC |
21:07.14 |
21:57.26 |
50.12 |
| 26 |
Mercado, Josh G (13)
|
MRFLY |
|
22:27.93 |
- |
| 27 |
Sepic, Nicolas (13)
|
MRFLY |
|
25:06.07 |
- |