| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:04.43 | ManSask Provincial Championships | 2025-07-10 |
| 100m Butterfly | 1:01.66 | 2025 Prairie Winter International | 2025-12-11 |
| 100m Freestyle | 1:00.01 | Edmonton Open 2026 | 2026-01-30 |
| 100m Freestyle | 56.65 | 2025 Prairie Winter International | 2025-12-11 |
| 100m IM | 1:06.06 | Bison Sprint IM Invitational | 2025-10-18 |
| 200m Backstroke | 2:30.56 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 200m Butterfly | 2:27.35 | ManSask Provincial Championships | 2025-07-10 |
| 200m Butterfly | 2:21.37 | Spooktacular Goldfins Invitational 49 | 2025-10-24 |
| 200m Freestyle | 2:20.12 | Edmonton Open 2026 | 2026-01-30 |
| 200m Freestyle | 2:08.03 | 2025 Prairie Winter International | 2025-12-11 |
| 200m IM | 2:33.41 | Edmonton Open 2026 | 2026-01-30 |
| 200m IM | 2:25.09 | Spooktacular Goldfins Invitational 49 | 2025-10-24 |
| 3000m Freestyle | 15:55.79 | 2025 Canada Games | 2025-08-10 |
| 400m Freestyle | 4:39.07 | ManSask Provincial Championships | 2025-07-10 |
| 400m IM | 5:09.64 | Seals West Side Challenge | 2025-11-28 |
| 50m Backstroke | 33.59 | Bison Sprint IM Invitational | 2026-01-10 |
| 50m Breaststroke | 37.63 | Bison Sprint IM Invitational | 2025-10-18 |
| 50m Butterfly | 29.31 | Edmonton Open 2026 | 2026-01-30 |
| 50m Butterfly | 28.53 | 2025 Prairie Winter International | 2025-12-11 |
| 50m Freestyle | 27.10 | Spooktacular Goldfins Invitational 49 | 2025-10-24 |
| 800m Freestyle | 9:46.57 | ManSask Provincial Championships | 2025-07-10 |
McKay, Matthew's top personal bests include 100m Butterfly (1:04.43), 100m Butterfly (1:01.66), 100m Freestyle (1:00.01), 100m Freestyle (56.65), 100m IM (1:06.06).
McKay, Matthew swims for Manitoba Marlins.
McKay, Matthew has competed in 9 meets.