| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:57.20 | Craven SPORT Services Racing Series #2 | 2025-11-15 |
| 100m Freestyle | 1:44.55 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 200m Backstroke | 4:01.44 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 200m Freestyle | 3:47.60 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 400m Freestyle | 8:15.66 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 50m Backstroke | 52.22 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
| 50m Breaststroke | 1:10.31 | Craven SPORT Services Racing Series #2 | 2025-11-15 |
| 50m Freestyle | 49.89 | 2026 Sask Open Short Course Junior Provincials | 2026-02-27 |
Marshall, Nadia's top personal bests include 100m Backstroke (1:57.20), 100m Freestyle (1:44.55), 200m Backstroke (4:01.44), 200m Freestyle (3:47.60), 400m Freestyle (8:15.66).
Marshall, Nadia swims for Prince Albert Sharks Swim Club.
Marshall, Nadia has competed in 3 meets.