| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:27.56 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 100m Freestyle | 1:19.38 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 200m Backstroke | 3:33.25 | 2025 Candy Cane Invitational | 2025-12-12 |
| 200m Freestyle | 2:52.94 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 200m IM | 3:25.64 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 400m Freestyle | 6:25.62 | 2025 Candy Cane Invitational | 2025-12-12 |
| 50m Backstroke | 45.33 | AA Age Group Development Meet & Nova Tech #4 C | 2026-02-14 |
| 50m Breaststroke | 52.49 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 50m Butterfly | 39.08 | 2025 Candy Cane Invitational | 2025-12-12 |
| 50m Freestyle | 35.14 | 2025 Candy Cane Invitational | 2025-12-12 |
| 800m Freestyle | 12:31.29 | 2026 AA & AAA Winter Champs | 2026-03-05 |
Duffy, Nicholas's top personal bests include 100m Butterfly (1:27.56), 100m Freestyle (1:19.38), 200m Backstroke (3:33.25), 200m Freestyle (2:52.94), 200m IM (3:25.64).
Duffy, Nicholas swims for Halifax Trojan Aquatic Club.
Duffy, Nicholas has competed in 6 meets.