| Event | Time | Meet | Date |
|---|---|---|---|
| 25m Backstroke | 32.35 | Region D Regional Championships | 2025-07-25 |
| 25m Breaststroke | 34.02 | ASSA Provincial Championships | 2025-08-01 |
| 25m Butterfly | 36.63 | Killam Cyclones Making Waves | 2025-07-19 |
| 25m Freestyle | 31.27 | Hanna Seals Invitational 2025 | 2025-07-12 |
| 50m Backstroke | 1:27.06 | Lacombe Big Splash | 2025-06-07 |
| 50m Breaststroke | 1:17.39 | Region D Regional Championships | 2025-07-25 |
| 50m Freestyle | 1:08.54 | Region D Regional Championships | 2025-07-25 |
Rubanga-Brummund, Mary's top personal bests include 25m Backstroke (32.35), 25m Breaststroke (34.02), 25m Butterfly (36.63), 25m Freestyle (31.27), 50m Backstroke (1:27.06).
Rubanga-Brummund, Mary swims for Hanna Seals Swim Club.
Rubanga-Brummund, Mary has competed in 9 meets.