| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:19.47 | SDSC Fall Splash 2025 | 2025-11-22 |
| 100m Breaststroke | 1:33.00 | 2025 Candy Cane Invitational | 2025-12-12 |
| 100m Freestyle | 1:11.50 | SDSC Fall Splash 2025 | 2025-11-22 |
| 100m IM | 1:22.62 | SDSC Halloween Devo 2025 | 2025-10-18 |
| 200m Backstroke | 2:59.76 | AAA LCM #3 | 2025-05-23 |
| 200m Backstroke | 2:49.98 | 2025 Candy Cane Invitational | 2025-12-12 |
| 200m Breaststroke | 3:30.88 | 2025 Canada Games | 2025-08-10 |
| 200m Breaststroke | 3:15.20 | 2025 Candy Cane Invitational | 2025-12-12 |
| 200m Butterfly | 3:06.82 | Elf Extravaganza 2025 | 2025-12-06 |
| 200m Freestyle | 2:34.38 | SDSC Halloween Devo 2025 | 2025-10-18 |
| 200m IM | 2:57.30 | 2025 Canada Games | 2025-08-10 |
| 200m IM | 2:50.38 | SDSC Fall Splash 2025 | 2025-11-22 |
| 400m Freestyle | 5:45.66 | AAA LCM #3 | 2025-05-23 |
| 400m Freestyle | 5:21.13 | 2025 Candy Cane Invitational | 2025-12-12 |
| 400m IM | 6:14.23 | 2025 Canada Games | 2025-08-10 |
| 400m IM | 5:49.53 | 2025 Candy Cane Invitational | 2025-12-12 |
| 50m Backstroke | 38.45 | AAA LCM #3 | 2025-05-23 |
| 50m Backstroke | 37.59 | Elf Extravaganza 2025 | 2025-12-06 |
| 50m Breaststroke | 42.65 | Elf Extravaganza 2025 | 2025-12-06 |
| 50m Freestyle | 33.01 | SDSC Winter Devo 2026 | 2026-02-28 |
Stevenson, Mya's top personal bests include 100m Backstroke (1:19.47), 100m Breaststroke (1:33.00), 100m Freestyle (1:11.50), 100m IM (1:22.62), 200m Backstroke (2:59.76).
Stevenson, Mya swims for Charlottetown Bluephins Aquatic Club.
Stevenson, Mya has competed in 7 meets.