| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:19.91 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 100m Butterfly | 1:19.61 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 100m Freestyle | 1:09.85 | New Years Time Trial | 2026-01-16 |
| 1500m Freestyle | 4:26.84 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m Backstroke | 3:02.62 | Last One, Fast One | 2025-06-04 |
| 200m Butterfly | 3:01.79 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m Freestyle | 2:34.89 | 2025 PCS Xmas Cracker | 2025-12-05 |
| 200m IM | 2:55.64 | 2025 Summer Divisionals - North & Interior | 2025-06-27 |
| 400m Freestyle | 5:35.33 | 2025 Ryan Downing Memorial Swim Meet | 2025-11-21 |
| 400m IM | 6:06.76 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 50m Butterfly | 34.89 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 50m Freestyle | 32.26 | BC Winter Divisionals - North & Interior | 2026-02-20 |
Horton, Mallory's top personal bests include 100m Backstroke (1:19.91), 100m Butterfly (1:19.61), 100m Freestyle (1:09.85), 1500m Freestyle (4:26.84), 200m Backstroke (3:02.62).
Horton, Mallory swims for Team Yukon.
Horton, Mallory has competed in 8 meets.