| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:07.89 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 100m Breaststroke | 1:08.78 | Scar Pan Am Winter Classic | 2026-01-16 |
| 100m Breaststroke | 1:05.88 | 2025 Barrie Aquafest | 2025-10-31 |
| 100m Butterfly | 1:13.32 | Scar Pan Am Winter Classic | 2026-01-16 |
| 100m Butterfly | 1:07.17 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 100m Freestyle | 57.30 | Scar Pan Am Winter Classic | 2026-01-16 |
| 100m Freestyle | 55.38 | 2025 Barrie Aquafest | 2025-10-31 |
| 200m Breaststroke | 2:45.74 | Scar Pan Am Winter Classic | 2026-01-16 |
| 200m Breaststroke | 2:27.25 | 2025 Barrie Aquafest | 2025-10-31 |
| 200m Freestyle | 2:05.90 | 2025 Central Region Div 1 LC Championships | 2025-06-20 |
| 200m Freestyle | 2:06.96 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:23.97 | Birthday Cake Time Trial | 2025-05-31 |
| 200m IM | 2:20.73 | 2025 Barrie Aquafest | 2025-10-31 |
| 400m IM | 5:10.91 | 2025 Barrie Aquafest | 2025-10-31 |
| 50m Backstroke | 29.71 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Breaststroke | 30.82 | Birthday Cake Time Trial | 2025-05-31 |
| 50m Breaststroke | 30.32 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Butterfly | 29.51 | Scar Pan Am Winter Classic | 2026-01-16 |
| 50m Butterfly | 28.66 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Freestyle | 26.10 | Scar Pan Am Winter Classic | 2026-01-16 |
| 50m Freestyle | 25.62 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Nicolescu, Dan's top personal bests include 100m Backstroke (1:07.89), 100m Breaststroke (1:08.78), 100m Breaststroke (1:05.88), 100m Butterfly (1:13.32), 100m Butterfly (1:07.17).
Nicolescu, Dan swims for Pickering Swim Club Inc.
Nicolescu, Dan has competed in 7 meets.