| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:19.45 | Edmonton Open 2026 | 2026-01-30 |
| 100m Backstroke | 1:12.63 | Winter Provincial Trials | 2026-03-06 |
| 100m Breaststroke | 1:35.24 | Edmonton Open 2026 | 2026-01-30 |
| 100m Breaststroke | 1:28.80 | Candy Cane Invitational | 2025-11-28 |
| 100m Butterfly | 1:13.01 | Winter Provincial Trials | 2026-03-06 |
| 100m Freestyle | 1:08.64 | Summer Festival | 2025-06-13 |
| 100m IM | 1:17.60 | Winter Festival | 2026-01-23 |
| 200m Backstroke | 2:53.39 | SilverRays Invitational | 2025-05-31 |
| 200m Backstroke | 2:43.83 | Winter Provincial Trials | 2026-03-06 |
| 200m Breaststroke | 3:09.55 | Winter Festival | 2026-01-23 |
| 200m Butterfly | 2:52.35 | Winter Festival | 2026-01-23 |
| 200m Freestyle | 2:30.45 | Candy Cane Invitational | 2025-11-28 |
| 200m IM | 2:46.62 | Summer Festival | 2025-06-13 |
| 400m Freestyle | 5:29.99 | SilverRays Invitational | 2025-05-31 |
| 400m IM | 6:09.34 | Edmonton Open 2026 | 2026-01-30 |
| 400m IM | 6:06.85 | Candy Cane Invitational | 2025-11-28 |
| 50m Backstroke | 36.22 | SilverRays Invitational | 2025-05-31 |
| 50m Backstroke | 33.33 | Winter Provincial Trials | 2026-03-06 |
| 50m Breaststroke | 42.88 | SilverRays Invitational | 2025-05-31 |
| 50m Breaststroke | 40.57 | Candy Cane Invitational | 2025-11-28 |
| 50m Butterfly | 33.69 | Edmonton Open 2026 | 2026-01-30 |
| 50m Butterfly | 31.77 | Winter Provincial Trials | 2026-03-06 |
| 50m Freestyle | 32.78 | SilverRays Invitational | 2025-05-31 |
| 50m Freestyle | 30.71 | Candy Cane Invitational | 2025-11-28 |
| 800m Freestyle | 11:10.39 | Blue Bears Invitational | 2026-01-16 |
Sledz, Margaret's top personal bests include 100m Backstroke (1:19.45), 100m Backstroke (1:12.63), 100m Breaststroke (1:35.24), 100m Breaststroke (1:28.80), 100m Butterfly (1:13.01).
Sledz, Margaret swims for Edmonton Keyano Swim Club.
Sledz, Margaret has competed in 9 meets.