| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:14.56 | East Coast Championships | 2025-07-10 |
| 100m Backstroke | 1:10.83 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 100m Freestyle | 1:08.47 | East Coast Championships | 2025-07-10 |
| 200m Backstroke | 2:38.43 | East Coast Championships | 2025-07-10 |
| 200m Backstroke | 2:34.51 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 200m Freestyle | 2:24.88 | 2025 Eastern Ontario LC Regional Championships | 2025-06-05 |
| 200m Freestyle | 2:25.02 | 2025 AUS #2 Invitational | 2025-11-08 |
| 200m IM | 2:44.19 | 2025 AUS #2 Invitational | 2025-11-08 |
| 400m Freestyle | 5:09.25 | East Coast Championships | 2025-07-10 |
| 400m Freestyle | 4:59.63 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 50m Backstroke | 35.01 | East Coast Championships | 2025-07-10 |
| 50m Breaststroke | 39.47 | 2025 AUS #2 Invitational | 2025-11-08 |
| 50m Butterfly | 35.10 | Amby Legere Invitational | 2026-01-24 |
Mylie Hollingworth's top personal bests include 100m Backstroke (1:14.56), 100m Backstroke (1:10.83), 100m Freestyle (1:08.47), 200m Backstroke (2:38.43), 200m Backstroke (2:34.51).
Mylie Hollingworth swims for Mount Allison University.
Mylie Hollingworth has competed in 5 meets.