| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:39.23 | 2025 Alan Swanston Classic | 2025-12-05 |
| 100m Breaststroke | 1:46.53 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Butterfly | 1:47.89 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Freestyle | 1:30.43 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 100m IM | 1:42.85 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m Backstroke | 3:26.77 | 2025 Alan Swanston Classic | 2025-12-05 |
| 200m Breaststroke | 4:00.83 | PICK Last Gasp 2025 | 2025-06-07 |
| 200m Butterfly | 4:00.92 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Freestyle | 3:06.40 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m IM | 3:23.38 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Backstroke | 44.28 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Breaststroke | 49.89 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Butterfly | 48.92 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Freestyle | 38.07 | 2026 Steve Kingston Memorial | 2026-03-06 |
Gagnon, Kaylee's top personal bests include 100m Backstroke (1:39.23), 100m Breaststroke (1:46.53), 100m Butterfly (1:47.89), 100m Freestyle (1:30.43), 100m IM (1:42.85).
Gagnon, Kaylee swims for Newmarket Stingrays Swim Club.
Gagnon, Kaylee has competed in 6 meets.