| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:06.51 | UBC Winter Warm-Up 2026 | 2026-01-17 |
| 100m Backstroke | 1:01.36 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 100m IM | 1:07.09 | UBC University Cup Pacific 2025 | 2025-11-08 |
| 200m Backstroke | 2:27.30 | UBC Winter Warm-Up 2026 | 2026-01-17 |
| 200m Backstroke | 2:13.77 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Backstroke | 28.50 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Butterfly | 28.73 | 2026 U SPORTS Swimming Championships | 2026-03-12 |
| 50m Freestyle | 28.82 | VPSC Winter Invitational 2025 | 2025-12-05 |
Natascha Borromeo's top personal bests include 100m Backstroke (1:06.51), 100m Backstroke (1:01.36), 100m IM (1:07.09), 200m Backstroke (2:27.30), 200m Backstroke (2:13.77).
Natascha Borromeo swims for University of British Columbia.
Natascha Borromeo has competed in 9 meets.