Top personal bests across all competitions
| # | Name | Team | Age | Time | Date |
|---|---|---|---|---|---|
| 1 | Wang, Yi Shun CPS · 17 | CPS | 17 | 3:55.68 | 2025-12-29 |
| 2 | Tsang, Pak Kiu |
| SYS |
| 15 |
| 3:59.84 |
| 2025-12-29 |
| 3 | Chan, Wai Ching Adrian HTA · 16 | HTA | 16 | 3:59.87 | 2025-12-29 |
| 4 | Liao, Zitong CPS · 15 | CPS | 15 | 4:02.38 | 2025-12-29 |
| 5 | Law, Tsz Lok WTS · 14 | WTS | 14 | 4:04.13 | 2025-12-29 |
| 6 | Yick, Sum Kiu SLA · 15 | SLA | 15 | 4:04.47 | 2025-12-29 |
| 7 | Han, Pak Kiu HTA · 16 | HTA | 16 | 4:04.72 | 2025-12-29 |
| 8 | Ho, Nam Wai Tinky WTS · 15 | WTS | 15 | 4:05.59 | 2018-12-03 |
| 9 | Chui, Ue Haang WDA · 15 | WDA | 15 | 4:06.08 | 2025-12-29 |
| 10 | Zhu, Xiuping PSC · 16 | PSC | 16 | 4:06.19 | 2025-12-29 |
| 11 | Chen, Zheng Xuan Jason HTA · 14 | HTA | 14 | 4:07.26 | 2025-12-29 |
| 12 | Lam, Wai Lok SYS · 16 | SYS | 16 | 4:08.34 | 2025-12-29 |
| 13 | Lau, Chor Tik WTS · 16 | WTS | 16 | 4:08.93 | 2025-12-29 |
| 14 | Ma, Gilaine TPS · 16 | TPS | 16 | 4:09.47 | 2025-02-10 |
| 15 | Lam, Marcus Pak Hei WTS · 15 | WTS | 15 | 4:09.83 | 2025-12-29 |
| 16 | Lee, Chak Fung Jaiden HTA · 16 | HTA | 16 | 4:11.69 | 2025-12-29 |
| 17 | Chan, Chi Kit Javen WTS · 17 | WTS | 17 | 4:12.47 | 2025-12-29 |
| 18 | Cheung, Chi Daniel SYS · 16 | SYS | 16 | 4:12.86 | 2025-12-29 |
| 19 | Cheung, Man Ho SLA · 15 | SLA | 15 | 4:12.97 | 2025-12-29 |
| 20 | Hsieh, Kurtis Shing Yiu TPS · 12 | TPS | 12 | 4:13.05 | 2025-12-29 |
| 21 | Gao, Jialian Candice CPS · 14 | CPS | 14 | 4:13.73 | 2026-02-10 |
| 22 | He, Yu Hao CPS · 14 | CPS | 14 | 4:13.81 | 2025-12-29 |
| 23 | Wang, Xin Tong WTS · 15 | WTS | 15 | 4:14.38 | 2024-02-05 |
| 24 | Li, Yue Kun HTA · 14 | HTA | 14 | 4:14.54 | 2025-12-29 |
| 25 | Wan, Wui Bun PSC · 13 | PSC | 13 | 4:14.59 | 2025-12-29 |