| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:51.55 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Breaststroke | 1:53.55 | St. James Seals Invitational | 2026-01-23 |
| 100m Freestyle | 1:36.48 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m Backstroke | 4:07.60 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m Freestyle | 3:30.97 | 2026 Manta Grand Prix | 2026-02-20 |
| 25m Breaststroke | 26.07 | Kenora Swimming Sharks Flash Freeze | 2025-11-22 |
| 50m Backstroke | 53.31 | St. James Seals Invitational | 2026-01-23 |
| 50m Breaststroke | 53.97 | St. James Seals Invitational | 2026-01-23 |
| 50m Freestyle | 41.82 | 2026 Manta Grand Prix | 2026-02-20 |
Madden, Sylvia's top personal bests include 100m Backstroke (1:51.55), 100m Breaststroke (1:53.55), 100m Freestyle (1:36.48), 200m Backstroke (4:07.60), 200m Freestyle (3:30.97).
Madden, Sylvia swims for Kenora Swimming Sharks.
Madden, Sylvia has competed in 4 meets.