| Event | Time | Meet | Date |
|---|---|---|---|
| 50m Breaststroke | 53.14 | 2025 Winskill Otters' Ottermania LC | 2025-11-01 |
| 50m Butterfly | 41.16 | 2025 Winskill Otters' Ottermania LC | 2025-11-01 |
| 50m Freestyle | 37.70 | 2025 Winskill Otters' Ottermania LC | 2025-11-01 |
| 800m Freestyle | 14:15.77 | 2025 Winskill Otters' Ottermania LC | 2025-11-01 |
O'Brien, Claire's top personal bests include 50m Breaststroke (53.14), 50m Butterfly (41.16), 50m Freestyle (37.70), 800m Freestyle (14:15.77).
O'Brien, Claire swims for Legacy Masters Swim Club.
O'Brien, Claire has competed in 1 meets.