| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:18.13 | Maverick Madness 2026 | 2026-01-30 |
| 100m Breaststroke | 1:30.85 | Sandy Ferris Age Group Food Bank Challenge 2025 | 2025-12-19 |
| 100m Butterfly | 1:30.00 | Sandy Ferris Age Group Food Bank Challenge 2025 | 2025-12-19 |
| 100m Freestyle | 1:09.57 | Nose Creek Invitational 2026 | 2026-03-14 |
| 100m IM | 1:19.27 | Maverick Madness 2026 | 2026-01-30 |
| 200m Backstroke | 2:49.50 | Winter Festival | 2026-01-23 |
| 200m Freestyle | 2:35.19 | Nose Creek Invitational 2026 | 2026-03-14 |
| 200m IM | 2:55.03 | Winter Festival | 2026-01-23 |
| 400m Freestyle | 5:30.31 | Maverick Madness 2026 | 2026-01-30 |
| 50m Backstroke | 35.53 | Winter Festival | 2026-01-23 |
| 50m Breaststroke | 42.05 | Nose Creek Invitational 2026 | 2026-03-14 |
| 50m Butterfly | 35.64 | Winter Festival | 2026-01-23 |
| 50m Freestyle | 30.73 | Winter Festival | 2026-01-23 |
| 800m Freestyle | 11:44.09 | Sandy Ferris Age Group Food Bank Challenge 2025 | 2025-12-19 |
Mitchell, Gwen's top personal bests include 100m Backstroke (1:18.13), 100m Breaststroke (1:30.85), 100m Butterfly (1:30.00), 100m Freestyle (1:09.57), 100m IM (1:19.27).
Mitchell, Gwen swims for Killarney Swim Club.
Mitchell, Gwen has competed in 9 meets.