| Event | Time | Meet | Date |
|---|---|---|---|
| 1000m Freestyle | 9:58.69 | 2021-03-16 | |
| 100m Backstroke | 58.66 | 2022-01-15 | |
| 100m Breaststroke | 1:03.66 | 2022-01-16 | |
| 100m Butterfly | 28.75 | June Performance Meet 2025 | 2025-06-06 |
| 100m Freestyle | 51.14 | 2021-11-12 | |
| 100m IM | 1:03.70 | Toronto Varsity Blues vs McGill | 2025-11-16 |
| 100m Medley | 28.75 | June Performance Meet 2025 | 2025-06-06 |
| 1500m Freestyle | 17:20.06 | Swimrankings Import - Aarhus (DEN) Jul 2021 | 2021-07-08 |
| 1650m Freestyle | 17:00.99 | 2019-03-07 | |
| 200m Backstroke | 2:08.76 | 2023-10-20 | |
| 200m Breaststroke | 1:12.69 | 2025-01-19 | |
| 200m Butterfly | 28.75 | June Performance Meet 2025 | 2025-06-06 |
| 200m Freestyle | 1:48.82 | 2022-03-04 | |
| 200m IM | 2:14.75 | 2026 OUA Swimming Championships | 2026-02-19 |
| 200m Medley | 28.75 | June Performance Meet 2025 | 2025-06-06 |
| 400m Freestyle | 4:19.03 | 2021-07-30 | |
| 400m IM | 4:43.94 | 2025 Merrily Stratten Divisional Championships | 2025-11-22 |
| 400m Medley | 28.75 | June Performance Meet 2025 | 2025-06-06 |
| 500m Freestyle | 4:49.90 | 2022-03-05 | |
| 50m Backstroke | 28.55 | 2022-01-15 | |
| 50m Breaststroke | 35.61 | 2019-06-20 | |
| 50m Butterfly | 25.32 | 2025-03-06 | |
| 50m Freestyle | 23.54 | 2022-03-05 | |
| 800m Freestyle | 9:11.42 | 2019-08-06 |
Mollin, Nina's top personal bests include 1000m Freestyle (9:58.69), 100m Backstroke (58.66), 100m Breaststroke (1:03.66), 100m Butterfly (28.75), 100m Freestyle (51.14).
Mollin, Nina swims for Toronto Swim Club.
Mollin, Nina has competed in 15 meets.