| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 59.47 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 100m Breaststroke | 1:19.49 | 2023-05-12 | |
| 100m Butterfly | 1:01.51 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 100m Freestyle | 1:06.50 | 2019-08-03 | |
| 100m Medley | 1:07.73 | 2023-11-10 | |
| 200m Backstroke | 2:12.11 | 2024-11-23 | |
| 200m Breaststroke | 3:34.07 | 2017-01-07 | |
| 200m Butterfly | 2:21.14 | 2024-11-02 | |
| 200m IM | 2:27.96 | VPSC Winter Invitational 2025 | 2025-12-05 |
| 200m Medley | 2:24.65 | 2023-11-11 | |
| 400m Medley | 5:47.19 | 2018-07-26 | |
| 50m Backstroke | 27.47 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Breaststroke | 36.98 | 2023-05-13 | |
| 50m Butterfly | 28.57 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Freestyle | 28.17 | 2022-11-05 |
Mitchell, Piper's top personal bests include 100m Backstroke (59.47), 100m Breaststroke (1:19.49), 100m Butterfly (1:01.51), 100m Freestyle (1:06.50), 100m Medley (1:07.73).
Mitchell, Piper swims for University of British Columbia.
Mitchell, Piper has competed in 11 meets.