| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:15.03 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Breaststroke | 1:35.25 | RHAC Fall Classic 2025 | 2025-10-24 |
| 100m Butterfly | 1:11.56 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Freestyle | 1:05.74 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Backstroke | 2:49.46 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m Butterfly | 2:48.25 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Freestyle | 2:30.65 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m IM | 2:48.91 | RHAC Fall Classic 2025 | 2025-10-24 |
| 400m Freestyle | 5:41.28 | 2025 Alan Swanston Classic | 2025-12-05 |
| 400m IM | 5:36.51 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Butterfly | 32.53 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Freestyle | 29.04 | 2026 Steve Kingston Memorial | 2026-03-06 |
Sun, Ethan's top personal bests include 100m Backstroke (1:15.03), 100m Breaststroke (1:35.25), 100m Butterfly (1:11.56), 100m Freestyle (1:05.74), 200m Backstroke (2:49.46).
Sun, Ethan swims for Newmarket Stingrays Swim Club.
Sun, Ethan has competed in 7 meets.