Top personal bests across all competitions
| # | Name | Team | Age | Time | Date |
|---|---|---|---|---|---|
| 1 | Whittington, Peter Harry DLS · 19 | DLS | 19 | 4:15.24 | 2023-05-29 |
| 2 | Wang, Yi Shun |
| CPS |
| 17 |
| 4:18.42 |
| 2026-02-10 |
| 3 | Mak, Sai Ting Adam HTA · 17 | HTA | 17 | 4:18.65 | 2024-02-05 |
| 4 | Lo, Tsz Lam WTS · 17 | WTS | 17 | 4:19.10 | 2025-01-22 |
| 5 | Cheung, Ryan CPS · 16 | CPS | 16 | 4:21.07 | 2023-05-29 |
| 6 | Cheuk, Ming Ho CPS · 17 | CPS | 17 | 4:21.85 | 2019-12-02 |
| 7 | Lau, Kin Hei James HTA · 15 | HTA | 15 | 4:22.00 | 2023-12-12 |
| 8 | Liao, Xian Hao Jonathan HJC · 17 | HJC | 17 | 4:22.59 | 2017-03-16 |
| 9 | Ng, Michael Yu Hin CPS · 18 | CPS | 18 | 4:22.68 | 2019-03-08 |
| 10 | Fung, Chun Ho HTA · 20 | HTA | 20 | 4:23.22 | 2017-06-12 |
| 11 | Lau, Ping Chi HTA · 17 | HTA | 17 | 4:23.61 | 2019-12-02 |
| 12 | Chen, Eric Q HIS · 16 | HIS | 16 | 4:23.68 | 2026-02-10 |
| 13 | Chen, Zheng Xuan Jason HTA · 14 | HTA | 14 | 4:23.86 | 2026-02-10 |
| 14 | Mok, Kai Tik Marcus WTS · 16 | WTS | 16 | 4:25.89 | 2017-06-12 |
| 15 | Lam, Chak Hang HVA · 17 | HVA | 17 | 4:26.81 | 2018-12-03 |
| 16 | Wong, Yik Yan Sean SCA · 17 | SCA | 17 | 4:27.03 | 2025-02-10 |
| 17 | Lu, Pat Fan SYS · 16 | SYS | 16 | 4:27.19 | 2022-09-05 |
| 18 | Williams, Miles Jing SCA · 17 | SCA | 17 | 4:27.34 | 2015-09-12 |
| 19 | So, Chun Hei KTS · 16 | KTS | 16 | 4:28.08 | 2026-02-10 |
| 20 | So, Kwun Wa WDA · 17 | WDA | 17 | 4:28.43 | 2025-01-22 |
| 21 | He, Shing Ip CPS · 19 | CPS | 19 | 4:29.05 | 2025-01-22 |
| 22 | Lai, King Wo WTS · 17 | WTS | 17 | 4:29.53 | 2025-01-22 |
| 23 | Tsang, Lok Hei SYS · 21 | SYS | 21 | 4:29.73 | 2025-02-10 |
| 24 | Yick, Sum Kiu SLA · 14 | SLA | 14 | 4:29.78 | 2025-02-10 |
| 25 | Wan, Chun Lim PSC · 18 | PSC | 18 | 4:30.75 | 2025-02-10 |