| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:36.99 | Jack Frost 2025 | 2025-10-24 |
| 100m Breaststroke | 1:59.62 | 4th Annual Comet Cup | 2025-11-14 |
| 100m Butterfly | 1:47.38 | Maverick Madness 2026 | 2026-01-30 |
| 100m Freestyle | 1:21.48 | Maverick Madness 2026 | 2026-01-30 |
| 100m IM | 1:41.82 | Jack Frost 2025 | 2025-10-24 |
| 200m Backstroke | 3:22.86 | Sandy Ferris Age Group Food Bank Challenge 2025 | 2025-12-19 |
| 200m Breaststroke | 4:05.85 | 4th Annual Comet Cup | 2025-11-14 |
| 200m Freestyle | 3:06.91 | Blue Bears Invitational | 2026-01-16 |
| 200m IM | 3:27.84 | Nose Creek Invitational 2026 | 2026-03-14 |
| 400m Freestyle | 6:43.63 | 4th Annual Comet Cup | 2025-11-14 |
| 50m Backstroke | 43.42 | Maverick Madness 2026 | 2026-01-30 |
| 50m Breaststroke | 53.03 | Blue Bears Invitational | 2026-01-16 |
| 50m Butterfly | 43.85 | Nose Creek Invitational 2026 | 2026-03-14 |
| 50m Freestyle | 36.66 | Maverick Madness 2026 | 2026-01-30 |
| 800m Freestyle | 14:00.96 | Sandy Ferris Age Group Food Bank Challenge 2025 | 2025-12-19 |
Niebergal, Anna's top personal bests include 100m Backstroke (1:36.99), 100m Breaststroke (1:59.62), 100m Butterfly (1:47.38), 100m Freestyle (1:21.48), 100m IM (1:41.82).
Niebergal, Anna swims for Cascade Swim Club.
Niebergal, Anna has competed in 9 meets.