| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:08.56 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 100m Butterfly | 1:10.80 | Western Transmountain Festival III | 2026-02-20 |
| 100m Butterfly | 1:11.13 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 100m Freestyle | 1:04.47 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 100m IM | 1:14.40 | UCSC TC1-Special | 2025-10-17 |
| 200m Backstroke | 2:36.51 | Western Transmountain Festival III | 2026-02-20 |
| 200m Backstroke | 2:29.41 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m Breaststroke | 3:20.05 | UCSC Grand Prix | 2026-01-30 |
| 200m Butterfly | 2:41.25 | UCSC Grand Prix | 2026-01-30 |
| 200m Freestyle | 2:29.93 | Western Transmountain Festival III | 2026-02-20 |
| 200m Freestyle | 2:23.67 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m IM | 2:43.32 | Western Transmountain Festival III | 2026-02-20 |
| 200m IM | 2:39.49 | Cascade Speed Meet 2025 Provincial Series #1 | 2025-11-08 |
| 400m Freestyle | 5:14.80 | Cascade Speed Meet 2025 Provincial Series #1 | 2025-11-08 |
| 400m IM | 5:44.42 | Western Transmountain Festival III | 2026-02-20 |
| 50m Backstroke | 33.00 | Western Transmountain Festival III | 2026-02-20 |
| 50m Backstroke | 31.76 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 50m Breaststroke | 44.42 | UCSC Grand Prix | 2026-01-30 |
| 50m Butterfly | 32.13 | UCSC TC1-Special | 2025-10-17 |
| 50m Freestyle | 30.58 | UCSC Grand Prix | 2026-01-30 |
Liu, Gianna's top personal bests include 100m Backstroke (1:08.56), 100m Butterfly (1:10.80), 100m Butterfly (1:11.13), 100m Freestyle (1:04.47), 100m IM (1:14.40).
Liu, Gianna swims for Calgary Swimming.
Liu, Gianna has competed in 6 meets.