| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:33.31 | Rubber Ducky #2 | 2026-01-18 |
| 100m Breaststroke | 1:55.46 | 2025 Mid Summer Madness | 2025-07-26 |
| 100m Freestyle | 1:21.82 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m Breaststroke | 4:13.58 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m IM | 3:35.82 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 50m Backstroke | 42.90 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 50m Breaststroke | 53.27 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 50m Butterfly | 46.02 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 50m Freestyle | 35.57 | 2025 PCS Xmas Cracker | 2025-12-05 |
Macmillan-Thomas, Imogen's top personal bests include 100m Backstroke (1:33.31), 100m Breaststroke (1:55.46), 100m Freestyle (1:21.82), 200m Breaststroke (4:13.58), 200m IM (3:35.82).
Macmillan-Thomas, Imogen swims for UVic-Pacific Coast Swimming.
Macmillan-Thomas, Imogen has competed in 4 meets.