| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:54.47 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 100m Breaststroke | 2:14.32 | LAC - 12 & Under Celebration | 2026-01-17 |
| 100m Freestyle | 1:42.34 | LAC - 12 & Under Celebration | 2026-01-17 |
| 100m IM | 1:55.49 | LAC - 12 & Under Celebration | 2026-01-17 |
| 200m Backstroke | 4:05.82 | LAC - 12 & Under Celebration | 2026-01-17 |
| 200m Breaststroke | 4:38.70 | LAC - 12 & Under Celebration | 2026-01-17 |
| 200m Freestyle | 3:56.60 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 200m IM | 4:12.62 | LAC - 12 & Under Celebration | 2026-01-17 |
| 50m Backstroke | 53.75 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 50m Breaststroke | 1:03.81 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 50m Butterfly | 1:05.79 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 50m Freestyle | 45.43 | LAC - Nothers Fall Invitational | 2025-11-21 |
Campbell, Grayson's top personal bests include 100m Backstroke (1:54.47), 100m Breaststroke (2:14.32), 100m Freestyle (1:42.34), 100m IM (1:55.49), 200m Backstroke (4:05.82).
Campbell, Grayson swims for Middlesex Swimming.
Campbell, Grayson has competed in 2 meets.