| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:38.54 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 100m Backstroke | 1:27.21 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 100m Breaststroke | 1:45.67 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Butterfly | 1:41.91 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Freestyle | 1:21.00 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 100m Freestyle | 1:17.35 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Freestyle | 3:10.45 | BAD Outdoor LC Invitational | 2025-06-20 |
| 200m Freestyle | 2:47.58 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 3:18.78 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 400m Freestyle | 6:23.53 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Backstroke | 47.32 | BAD Outdoor LC Invitational | 2025-06-20 |
| 50m Backstroke | 40.55 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Breaststroke | 52.93 | BAD Outdoor LC Invitational | 2025-06-20 |
| 50m Breaststroke | 46.40 | 2026 BAD Spring Invitational Meet | 2026-03-06 |
| 50m Freestyle | 35.79 | 2025 Central Region Div 2 LC Championships | 2025-06-13 |
| 50m Freestyle | 35.08 | 2025 Alex Baumann Invitational | 2025-11-21 |
Kostelansky, Susanna's top personal bests include 100m Backstroke (1:38.54), 100m Backstroke (1:27.21), 100m Breaststroke (1:45.67), 100m Butterfly (1:41.91), 100m Freestyle (1:21.00).
Kostelansky, Susanna swims for Oakville Aquatic Club.
Kostelansky, Susanna has competed in 7 meets.