| Event | Time | Meet | Date |
|---|---|---|---|
| 25m Backstroke | 34.57 | Melfort Marlins Invitaational | 2025-07-05 |
| 25m Breaststroke | 34.89 | Nipawin Lions Sprint Meet | 2025-07-06 |
| 25m Freestyle | 26.29 | Nipawin Lions Sprint Meet | 2025-07-06 |
| 50m Backstroke | 1:20.34 | Nipawin Lions Sprint Meet | 2025-07-06 |
| 50m Breaststroke | 1:19.00 | Nipawin Lions Sprint Meet | 2025-07-06 |
| 50m Freestyle | 1:02.68 | Melfort Marlins Invitaational | 2025-07-05 |
Donkers, Marshall's top personal bests include 25m Backstroke (34.57), 25m Breaststroke (34.89), 25m Freestyle (26.29), 50m Backstroke (1:20.34), 50m Breaststroke (1:19.00).
Donkers, Marshall swims for Nipawin Lions Speed Swim Club.
Donkers, Marshall has competed in 2 meets.