> Hong Kong - 400 metres - men - national record progression

46.91 - 3. Chan Chun Ho/03 - 13/06/2026 - Hong Kong/HKG - Athletics Open Meet
46.98 - 5. Chan Chun Ho/03 - 18/05/2026 - Chongqing/CHN - 04.Belt and Road Inv.
47.09 - 6. Chan Chun Ho/03 - 17/11/2025 - Guanghzhou/CHN - 15.National Games/h2
47.12 - 1. Chan Chun Ho/03 - 01/10/2025 - Hong Kong/HKG - Athletics Open Meet