| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Breaststroke | 1:08.06 | Unknown Meet 2022-06-18 | 2022-06-18 |
| 100m Breaststroke | 1:04.28 | Unknown Meet 2023-11-25 | 2023-11-25 |
| 100m Butterfly | 1:02.16 | Unknown Meet 2023-12-15 | 2023-12-15 |
| 100m Freestyle | 56.42 | Unknown Meet 2023-05-12 | 2023-05-12 |
| 200m Backstroke | 2:30.29 | Unknown Meet 2023-05-13 | 2023-05-13 |
| 200m Breaststroke | 2:29.86 | Unknown Meet 2023-03-16 | 2023-03-16 |
| 200m Breaststroke | 2:22.67 | Unknown Meet 2025-01-19 | 2025-01-19 |
| 200m Freestyle | 2:04.76 | Unknown Meet 2024-01-21 | 2024-01-21 |
| 200m Medley | 2:22.03 | Unknown Meet 2022-04-10 | 2022-04-10 |
| 200m Medley | 2:15.53 | Unknown Meet 2022-12-03 | 2022-12-03 |
| 50m Breaststroke | 31.19 | Unknown Meet 2023-08-04 | 2023-08-04 |
| 50m Breaststroke | 30.61 | Unknown Meet 2023-12-15 | 2023-12-15 |
| 50m Butterfly | 28.01 | Unknown Meet 2022-12-02 | 2022-12-02 |
| 50m Freestyle | 26.00 | Unknown Meet 2023-05-14 | 2023-05-14 |
| 50m Freestyle | 25.08 | Unknown Meet 2023-12-16 | 2023-12-16 |
Alex Walker's top personal bests include 100m Breaststroke (1:08.06), 100m Breaststroke (1:04.28), 100m Butterfly (1:02.16), 100m Freestyle (56.42), 200m Backstroke (2:30.29).
Alex Walker swims for Brock University.
Alex Walker has competed in 35 meets.