| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:24.64 | Neil Lepps 2026 | 2026-03-14 |
| 100m Breaststroke | 1:33.60 | Neil Lepps 2026 | 2026-03-14 |
| 100m Freestyle | 1:17.39 | Red Deer Catalina Valentine Meet | 2026-02-07 |
| 100m IM | 1:28.72 | Summer Festival | 2025-06-13 |
| 200m Breaststroke | 3:21.21 | Summer Festival | 2025-06-13 |
| 200m Freestyle | 2:50.56 | Red Deer Catalina Valentine Meet | 2026-02-07 |
| 200m IM | 2:59.03 | Neil Lepps 2026 | 2026-03-14 |
| 400m Freestyle | 6:02.85 | Summer Festival | 2025-06-13 |
| 50m Backstroke | 40.53 | Neil Lepps 2026 | 2026-03-14 |
| 50m Breaststroke | 44.06 | Neil Lepps 2026 | 2026-03-14 |
| 50m Butterfly | 42.88 | Red Deer Catalina Valentine Meet | 2026-02-07 |
| 50m Freestyle | 35.52 | Neil Lepps 2026 | 2026-03-14 |
King, Grayson's top personal bests include 100m Backstroke (1:24.64), 100m Breaststroke (1:33.60), 100m Freestyle (1:17.39), 100m IM (1:28.72), 200m Breaststroke (3:21.21).
King, Grayson swims for Edmonton Keyano Swim Club.
King, Grayson has competed in 4 meets.