| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:21.91 | Import - Unionville (ON) May 2023 | 2023-05-05 |
| 100m Backstroke | 1:17.92 | Unknown Meet 2021-12-12 | 2021-12-12 |
| 100m Breaststroke | 1:23.73 | Unknown Meet 2023-04-01 | 2023-04-01 |
| 100m Breaststroke | 1:18.04 | Unknown Meet 2025-01-19 | 2025-01-19 |
| 100m Freestyle | 1:12.52 | Unknown Meet 2019-05-31 | 2019-05-31 |
| 100m Freestyle | 1:05.72 | Unknown Meet 2021-12-11 | 2021-12-11 |
| 100m Medley | 1:43.65 | Unknown Meet 2016-02-27 | 2016-02-27 |
| 200m Breaststroke | 3:03.60 | Unknown Meet 2023-04-02 | 2023-04-02 |
| 200m Breaststroke | 2:51.49 | Unknown Meet 2025-01-19 | 2025-01-19 |
| 200m Freestyle | 2:35.73 | Unknown Meet 2023-04-01 | 2023-04-01 |
| 200m Freestyle | 2:28.46 | Unknown Meet 2024-01-21 | 2024-01-21 |
| 200m Medley | 2:48.42 | Unknown Meet 2024-01-21 | 2024-01-21 |
| 400m Freestyle | 5:39.81 | Unknown Meet 2023-04-02 | 2023-04-02 |
| 50m Backstroke | 38.97 | Import - Unionville (ON) May 2023 | 2023-05-05 |
| 50m Backstroke | 35.20 | Unknown Meet 2023-02-24 | 2023-02-24 |
| 50m Breaststroke | 38.86 | Import - Unionville (ON) May 2023 | 2023-05-05 |
| 50m Breaststroke | 36.48 | Unknown Meet 2025-01-19 | 2025-01-19 |
| 50m Butterfly | 33.72 | Unknown Meet 2021-12-11 | 2021-12-11 |
| 50m Freestyle | 34.54 | Unknown Meet 2019-05-31 | 2019-05-31 |
| 50m Freestyle | 30.84 | Unknown Meet 2021-12-11 | 2021-12-11 |
Pettypiece, Grace's top personal bests include 100m Backstroke (1:21.91), 100m Backstroke (1:17.92), 100m Breaststroke (1:23.73), 100m Breaststroke (1:18.04), 100m Freestyle (1:12.52).
Pettypiece, Grace swims for Brock University.
Pettypiece, Grace has competed in 18 meets.