| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 2:14.53 | OSAC Team Challenge Short Course Swim Meet | 2025-11-14 |
| 100m Freestyle | 1:54.82 | OSAC Team Challenge Short Course Swim Meet | 2025-11-14 |
| 100m IM | 2:03.72 | Collingwood High Five Invitational | 2026-03-08 |
| 50m Backstroke | 54.24 | OSAC Devo Challenge 2026 | 2026-02-22 |
| 50m Breaststroke | 56.94 | OSAC Team Challenge Short Course Swim Meet | 2025-11-14 |
| 50m Butterfly | 1:00.56 | Collingwood High Five Invitational | 2026-03-08 |
| 50m Freestyle | 45.90 | Collingwood High Five Invitational | 2026-03-08 |
Koch, Hanna's top personal bests include 100m Backstroke (2:14.53), 100m Freestyle (1:54.82), 100m IM (2:03.72), 50m Backstroke (54.24), 50m Breaststroke (56.94).
Koch, Hanna swims for Hanover Swim Club.
Koch, Hanna has competed in 3 meets.