| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:08.92 | 2026 NKB National Capital Cup | 2026-02-13 |
| 100m Breaststroke | 1:15.71 | 2026 NKB National Capital Cup | 2026-02-13 |
| 100m Breaststroke | 1:16.16 | 2025 NKB Fall Invitational | 2025-10-17 |
| 100m Butterfly | 1:02.46 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 100m Butterfly | 59.24 | 2025 NKB Fall Invitational | 2025-10-17 |
| 100m Freestyle | 58.06 | 2026 NKB National Capital Cup | 2026-02-13 |
| 100m Freestyle | 56.81 | 2026 Eastern Ontario Regional Championship - Winte | 2026-01-30 |
| 100m IM | 1:03.69 | 2025 NKB Fall Invitational | 2025-10-17 |
| 200m Butterfly | 2:27.65 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 200m Butterfly | 2:18.24 | 2025 NKB Fall Invitational | 2025-10-17 |
| 200m Freestyle | 2:15.40 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 200m IM | 2:29.24 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 200m IM | 2:21.92 | 2025 NKB Fall Invitational | 2025-10-17 |
| 400m Freestyle | 4:45.05 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 400m Freestyle | 4:39.34 | 2025 NKB Fall Invitational | 2025-10-17 |
| 400m IM | 5:24.38 | 2026 NKB National Capital Cup | 2026-02-13 |
| 50m Backstroke | 29.81 | GO Fall Halloween Invitational 2025 | 2025-11-01 |
| 50m Butterfly | 28.22 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 50m Butterfly | 27.20 | GO Fall Halloween Invitational 2025 | 2025-11-01 |
| 50m Freestyle | 26.56 | 2026 NKB National Capital Cup | 2026-02-13 |
| 50m Freestyle | 25.54 | GO Fall Halloween Invitational 2025 | 2025-11-01 |
| 800m Freestyle | 9:57.55 | 2026 Eastern Ontario Regional Championship - Winte | 2026-01-30 |
Kim, Sungyoun's top personal bests include 100m Backstroke (1:08.92), 100m Breaststroke (1:15.71), 100m Breaststroke (1:16.16), 100m Butterfly (1:02.46), 100m Butterfly (59.24).
Kim, Sungyoun swims for Nepean Kanata Barracudas Swim Club.
Kim, Sungyoun has competed in 6 meets.