| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 53.80 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 100m Butterfly | 52.62 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 100m Freestyle | 49.23 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 200m Butterfly | 2:07.07 | Dino Invitational 2025 | 2025-10-31 |
| 50m Backstroke | 25.38 | 2025 Canada West Swimming Championship | 2025-11-28 |
| 50m Butterfly | 23.61 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Freestyle | 24.17 | UBC University Cup Pacific 2025 | 2025-11-08 |
Mcdonald, Thomas's top personal bests include 100m Backstroke (53.80), 100m Butterfly (52.62), 100m Freestyle (49.23), 200m Butterfly (2:07.07), 50m Backstroke (25.38).
Mcdonald, Thomas swims for University of Calgary.
Mcdonald, Thomas has competed in 8 meets.