| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:10.93 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Breaststroke | 1:23.03 | 2025 NYAC Cup | 2025-11-14 |
| 100m Butterfly | 1:12.48 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 100m Butterfly | 1:10.63 | 2025 NYAC Cup | 2025-11-14 |
| 100m Freestyle | 1:04.11 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 100m Freestyle | 1:01.76 | 2025 NYAC Cup | 2025-11-14 |
| 100m IM | 1:11.46 | 2026 Trojan Pentathlon | 2026-03-06 |
| 200m Backstroke | 2:29.27 | 2025 NYAC Cup | 2025-11-14 |
| 200m Breaststroke | 2:57.46 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Butterfly | 2:46.81 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 200m Butterfly | 2:37.82 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Freestyle | 2:17.56 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 200m Freestyle | 2:13.19 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m IM | 2:31.27 | 2025 RHAC Summer League | 2025-07-18 |
| 400m Freestyle | 4:58.33 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 400m Freestyle | 4:44.18 | 2025 Barrie Aquafest | 2025-10-31 |
| 400m IM | 5:43.88 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 400m IM | 5:23.95 | 2025 RHAC Summer League | 2025-07-18 |
| 50m Backstroke | 33.62 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Breaststroke | 41.03 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 50m Breaststroke | 39.00 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Butterfly | 31.30 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Freestyle | 28.65 | 2025 RHAC Summer League | 2025-07-18 |
| 800m Freestyle | 10:22.86 | 2025 Huronia Region LC Team Challenge | 2025-06-05 |
| 800m Freestyle | 9:54.25 | 2026 Trojan Pentathlon | 2026-03-06 |
Dong, Dorothy's top personal bests include 100m Backstroke (1:10.93), 100m Breaststroke (1:23.03), 100m Butterfly (1:12.48), 100m Butterfly (1:10.63), 100m Freestyle (1:04.11).
Dong, Dorothy swims for Barrie Trojan Swim Club.
Dong, Dorothy has competed in 9 meets.