| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:11.24 | Scar Pan Am Winter Classic | 2026-01-16 |
| 100m Backstroke | 1:05.21 | 2025 NYAC Cup | 2025-11-14 |
| 100m Butterfly | 1:07.03 | Scar Pan Am Winter Classic | 2026-01-16 |
| 100m Butterfly | 1:04.82 | 2025 NYAC Cup | 2025-11-14 |
| 100m Freestyle | 57.71 | 2025 Central Region Div 1 LC Championships | 2025-06-20 |
| 100m Freestyle | 55.99 | 2025 NYAC Cup | 2025-11-14 |
| 100m IM | 1:06.73 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
| 200m Backstroke | 2:16.65 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Butterfly | 2:43.39 | Scar Pan Am Winter Classic | 2026-01-16 |
| 200m Butterfly | 2:45.86 | David Lawson Invitational 2026 | 2026-01-23 |
| 200m Freestyle | 2:07.06 | June Performance Meet 2025 | 2025-06-06 |
| 200m Freestyle | 2:00.09 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:30.29 | Scar Pan Am Winter Classic | 2026-01-16 |
| 200m IM | 2:27.25 | 2025 OAK Brad Townsend Fall Classic | 2025-10-17 |
| 400m Freestyle | 4:34.91 | 2025 Central Region Div 1 LC Championships | 2025-06-20 |
| 400m Freestyle | 4:22.08 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Backstroke | 32.38 | June Performance Meet 2025 | 2025-06-06 |
| 50m Backstroke | 31.17 | David Lawson Invitational 2026 | 2026-01-23 |
| 50m Breaststroke | 37.81 | June Performance Meet 2025 | 2025-06-06 |
| 50m Butterfly | 28.83 | Scar Pan Am Winter Classic | 2026-01-16 |
| 50m Butterfly | 27.65 | 2025 NYAC Cup | 2025-11-14 |
| 50m Freestyle | 26.37 | June Performance Meet 2025 | 2025-06-06 |
| 50m Freestyle | 25.40 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 800m Freestyle | 8:59.60 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Kulasic, Zaid's top personal bests include 100m Backstroke (1:11.24), 100m Backstroke (1:05.21), 100m Butterfly (1:07.03), 100m Butterfly (1:04.82), 100m Freestyle (57.71).
Kulasic, Zaid swims for Oakville Aquatic Club.
Kulasic, Zaid has competed in 9 meets.