Top personal bests across all competitions
| # | Name | Team | Age | Time | Date |
|---|---|---|---|---|---|
| 1 | To, Kenneth King Him LWS · 25 | LWS | 25 | 52.21 | 2018-12-03 |
| 2 | Koo, Ralph Yat Ho |
| HTA |
| 26 |
| 53.97 |
| 2024-02-05 |
| 3 | Chan, Tsz Chiu KGC · 22 | KGC | 22 | 54.85 | 2025-11-05 |
| 4 | Li, Sing Hoi WTS · 19 | WTS | 19 | 54.97 | 2024-11-26 |
| 5 | Yu, Dongqi HTA · 17 | HTA | 17 | 54.97 | 2025-11-05 |
| 6 | Lo, Tsz Lam WTS · 17 | WTS | 17 | 55.14 | 2024-11-26 |
| 7 | Mak, Sai Ting Adam HTA · 18 | HTA | 18 | 55.16 | 2025-02-10 |
| 8 | Yang, Hin Ho Boris HJC · 20 | HJC | 20 | 55.44 | 2019-03-08 |
| 9 | Fung, Chun Ho HTA · 23 | HTA | 23 | 55.54 | 2021-07-11 |
| 10 | Ng, Yan Kin HTA · 25 | HTA | 25 | 55.71 | 2023-05-29 |
| 11 | Lau, Kin Hei James HTA · 16 | HTA | 16 | 55.74 | 2025-02-10 |
| 12 | Wan, Chun Lim PSC · 19 | PSC | 19 | 55.83 | 2025-11-05 |
| 13 | Tsui, Wang Long Dominic HTA · 19 | HTA | 19 | 56.00 | 2024-02-05 |
| 14 | Mak, Ho Lun Raymond HTA · 22 | HTA | 22 | 56.02 | 2015-03-17 |
| 15 | Lau, Ping Chi HTA · 18 | HTA | 18 | 56.22 | 2021-07-11 |
| 16 | Whittington, Peter Harry DLS · 19 | DLS | 19 | 56.29 | 2023-05-29 |
| 17 | Mok, Kai Tik Marcus WTS · 17 | WTS | 17 | 56.44 | 2018-04-06 |
| 18 | Ng, Chun Nam Derick WTS · 22 | WTS | 22 | 56.61 | 2017-03-16 |
| 19 | Ho, Tin Long WTS · 21 | WTS | 21 | 56.67 | 2018-04-06 |
| 20 | Chen, Haolin *CP · 16 | *CP | 16 | 56.73 | 2024-11-26 |
| 21 | Ng, Cheuk Yin TPS · 16 | TPS | 16 | 56.77 | 2019-06-17 |
| 22 | Yuk, Shing Chi PSC · 22 | PSC | 22 | 56.80 | 2026-02-10 |
| 23 | Lu, Pat Fan SYS · 16 | SYS | 16 | 57.00 | 2022-09-05 |
| 24 | Cheung, Yau Ming *GW · 21 | *GW | 21 | 57.12 | 2019-03-08 |
| 25 | Kwong, Ka Ho LWS · 21 | LWS | 21 | 57.12 | 2018-12-03 |