| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:45.49 | 2025 Spartan Santa | 2025-12-06 |
| 100m Breaststroke | 1:49.22 | SKSC Winterfest | 2026-01-24 |
| 100m Freestyle | 1:33.22 | SKSC Winterfest | 2026-01-24 |
| 200m Backstroke | 3:44.34 | 2025 Spartan Santa | 2025-12-06 |
| 200m Freestyle | 3:15.73 | SKSC Winterfest | 2026-01-24 |
| 200m IM | 3:31.58 | SKSC January Time Trial 2026 | 2026-01-16 |
| 400m Freestyle | 7:35.01 | SKSC October Distance Time Trial 2025 | 2025-10-24 |
| 50m Backstroke | 48.00 | SKSC Winterfest | 2026-01-24 |
| 50m Breaststroke | 49.54 | SKSC Winterfest | 2026-01-24 |
| 50m Butterfly | 46.71 | SKSC Winterfest | 2026-01-24 |
| 50m Freestyle | 39.90 | 2025 Spartan Santa | 2025-12-06 |
Zhang, Cynthia's top personal bests include 100m Backstroke (1:45.49), 100m Breaststroke (1:49.22), 100m Freestyle (1:33.22), 200m Backstroke (3:44.34), 200m Freestyle (3:15.73).
Zhang, Cynthia swims for Surrey Knights Swim Club.
Zhang, Cynthia has competed in 7 meets.