| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:08.14 | 2026 MMST GTA Skins | 2026-02-13 |
| 100m Breaststroke | 1:06.33 | 2025 NYAC Cup | 2025-11-14 |
| 100m Butterfly | 1:00.56 | 2026 MMST GTA Skins | 2026-02-13 |
| 100m Butterfly | 1:03.39 | Dean Boles Invitational Meet | 2026-01-10 |
| 100m Freestyle | 52.86 | 2025 Age Group International SC | 2025-11-27 |
| 100m IM | 1:00.54 | Dean Boles Invitational Meet | 2026-01-10 |
| 200m Breaststroke | 2:31.13 | 2025 Age Group International LC | 2025-06-05 |
| 200m Breaststroke | 2:23.06 | 2025 NYAC Cup | 2025-11-14 |
| 200m Butterfly | 2:29.22 | BAD Outdoor LC Invitational | 2025-06-20 |
| 200m Freestyle | 2:05.87 | 2025 Age Group International LC | 2025-06-05 |
| 200m Freestyle | 1:58.38 | 2025 Age Group International SC | 2025-11-27 |
| 200m IM | 2:18.51 | 2025 Age Group International LC | 2025-06-05 |
| 200m IM | 2:09.58 | 2025 Age Group International SC | 2025-11-27 |
| 400m IM | 4:54.32 | 2025 Age Group International LC | 2025-06-05 |
| 400m IM | 4:40.27 | 2025 Age Group International SC | 2025-11-27 |
| 50m Backstroke | 28.78 | 2025 NYAC Cup | 2025-11-14 |
| 50m Breaststroke | 30.72 | 2026 MMST GTA Skins | 2026-02-13 |
| 50m Breaststroke | 30.26 | 2025 Age Group International SC | 2025-11-27 |
| 50m Butterfly | 26.32 | 2026 MMST GTA Skins | 2026-02-13 |
| 50m Butterfly | 25.91 | 2025 Age Group International SC | 2025-11-27 |
| 50m Freestyle | 25.24 | 2026 MMST GTA Skins | 2026-02-13 |
| 50m Freestyle | 24.80 | 2025 NYAC Cup | 2025-11-14 |
| 800m Freestyle | 8:53.58 | 2025 NYAC Cup | 2025-11-14 |
Liu, Nathan's top personal bests include 100m Breaststroke (1:08.14), 100m Breaststroke (1:06.33), 100m Butterfly (1:00.56), 100m Butterfly (1:03.39), 100m Freestyle (52.86).
Liu, Nathan swims for Region of Waterloo Swim Club.
Liu, Nathan has competed in 9 meets.