| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:07.55 | Back to the Blocks Invitational | 2026-02-21 |
| 100m Backstroke | 1:09.26 | Bluefins Fall Pentathlon | 2025-11-14 |
| 100m Breaststroke | 1:19.17 | 2025 SNL Provincial Championships | 2025-05-30 |
| 100m Butterfly | 1:09.58 | Bluefins Fall Pentathlon | 2025-11-14 |
| 100m Freestyle | 1:00.75 | Back to the Blocks Invitational | 2026-02-21 |
| 100m Freestyle | 1:01.01 | 2025 SNL Provincial Championships | 2025-05-30 |
| 200m Backstroke | 2:25.58 | Icebreaker Invitational | 2026-01-30 |
| 200m Freestyle | 2:15.35 | 2025 Canada Games | 2025-08-10 |
| 200m Freestyle | 2:14.34 | 2025 SNL Provincial Championships | 2025-05-30 |
| 200m IM | 2:36.42 | East Coast Championships | 2025-07-10 |
| 200m IM | 2:34.38 | Bluefins Fall Pentathlon | 2025-11-14 |
| 400m Freestyle | 4:51.62 | East Coast Championships | 2025-07-10 |
| 400m Freestyle | 4:43.40 | Icebreaker Invitational | 2026-01-30 |
| 50m Backstroke | 32.82 | 2025 Canada Games | 2025-08-10 |
| 50m Backstroke | 30.06 | Icebreaker Invitational | 2026-01-30 |
| 50m Breaststroke | 37.30 | 2025 Canada Games | 2025-08-10 |
| 50m Breaststroke | 36.01 | 2025 SNL Provincial Championships | 2025-05-30 |
| 50m Butterfly | 29.58 | Back to the Blocks Invitational | 2026-02-21 |
| 50m Freestyle | 28.34 | East Coast Championships | 2025-07-10 |
| 50m Freestyle | 28.01 | 2025 SNL Provincial Championships | 2025-05-30 |
| 800m Freestyle | 9:54.09 | Icebreaker Invitational | 2026-01-30 |
Smith, Gillian's top personal bests include 100m Backstroke (1:07.55), 100m Backstroke (1:09.26), 100m Breaststroke (1:19.17), 100m Butterfly (1:09.58), 100m Freestyle (1:00.75).
Smith, Gillian swims for St. John's Legends Swim Club.
Smith, Gillian has competed in 6 meets.