| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:40.67 | Hard off the Block Invitational | 2026-02-20 |
| 100m Freestyle | 1:16.27 | Hard off the Block Invitational | 2026-02-20 |
| 100m IM | 1:38.67 | Bluefins Fall Pentathlon | 2025-11-14 |
| 200m Backstroke | 3:29.40 | Hard off the Block Invitational | 2026-02-20 |
| 200m Freestyle | 2:47.45 | Icebreaker Invitational | 2026-01-30 |
| 400m Freestyle | 5:58.10 | Icebreaker Invitational | 2026-01-30 |
| 50m Backstroke | 46.56 | Icebreaker Invitational | 2026-01-30 |
| 50m Breaststroke | 50.99 | Bluefins Fall Pentathlon | 2025-11-14 |
| 50m Butterfly | 53.01 | Bluefins Fall Pentathlon | 2025-11-14 |
| 50m Freestyle | 34.44 | Hard off the Block Invitational | 2026-02-20 |
Brown, Katherine's top personal bests include 100m Backstroke (1:40.67), 100m Freestyle (1:16.27), 100m IM (1:38.67), 200m Backstroke (3:29.40), 200m Freestyle (2:47.45).
Brown, Katherine swims for Mount Pearl Marlins.
Brown, Katherine has competed in 3 meets.