| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:09.05 | AAA LCM #3 | 2025-05-23 |
| 100m Butterfly | 1:01.98 | 2025 AUS #2 Invitational | 2025-11-08 |
| 100m Freestyle | 59.09 | AAA LCM #3 | 2025-05-23 |
| 100m Freestyle | 53.49 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 100m IM | 1:02.05 | 2025 AUS #2 Invitational | 2025-11-08 |
| 200m Freestyle | 2:10.50 | AAA LCM #3 | 2025-05-23 |
| 200m Freestyle | 1:59.51 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 200m IM | 2:26.23 | AAA LCM #3 | 2025-05-23 |
| 50m Butterfly | 26.55 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
| 50m Freestyle | 26.26 | AAA LCM #3 | 2025-05-23 |
| 50m Freestyle | 24.21 | 2025 Kemp-Fry Invitational Swim Meet | 2025-11-28 |
Sean Longley's top personal bests include 100m Butterfly (1:09.05), 100m Butterfly (1:01.98), 100m Freestyle (59.09), 100m Freestyle (53.49), 100m IM (1:02.05).
Sean Longley swims for Dalhousie University.
Sean Longley has competed in 4 meets.