| Event | Time | Meet | Date |
|---|---|---|---|
| 50m Backstroke | 55.93 | Chena Invitational | 2026-01-24 |
| 50m Breaststroke | 1:07.28 | Chena Invitational | 2026-01-24 |
| 50m Freestyle | 53.80 | Chena Invitational | 2026-01-24 |
Liu, Ethan's top personal bests include 50m Backstroke (55.93), 50m Breaststroke (1:07.28), 50m Freestyle (53.80).
Liu, Ethan swims for Chena Swim Club.
Liu, Ethan has competed in 1 meets.