| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Freestyle | 1:55.53 | BAC Team Showdown 2025 | 2025-12-12 |
| 25m Butterfly | 38.76 | CAJ In-House Meet #1 | 2025-10-25 |
| 50m Backstroke | 1:05.02 | BAC Team Showdown 2025 | 2025-12-12 |
| 50m Breaststroke | 1:09.83 | BAC Team Showdown 2025 | 2025-12-12 |
| 50m Butterfly | 1:17.09 | BAC Team Showdown 2025 | 2025-12-12 |
| 50m Freestyle | 51.42 | GMAC Fall Skills and Thrills | 2025-11-02 |
Clarkson, James's top personal bests include 100m Freestyle (1:55.53), 25m Butterfly (38.76), 50m Backstroke (1:05.02), 50m Breaststroke (1:09.83), 50m Butterfly (1:17.09).
Clarkson, James swims for Cambridge Aquajets.
Clarkson, James has competed in 4 meets.