| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:27.28 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Breaststroke | 1:31.33 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Butterfly | 1:26.52 | 2025 Prairie Winter International | 2025-12-11 |
| 100m Freestyle | 1:11.89 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m IM | 1:22.05 | Seals West Side Challenge | 2025-11-28 |
| 200m Freestyle | 2:44.40 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m IM | 3:01.10 | 2026 Manta Grand Prix | 2026-02-20 |
| 50m Breaststroke | 42.35 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 50m Butterfly | 35.44 | 2025 Prairie Winter International | 2025-12-11 |
| 50m Freestyle | 32.58 | 2026 Manta Grand Prix | 2026-02-20 |
Hirayama, Emily's top personal bests include 100m Backstroke (1:27.28), 100m Breaststroke (1:31.33), 100m Butterfly (1:26.52), 100m Freestyle (1:11.89), 100m IM (1:22.05).
Hirayama, Emily swims for Manitoba Marlins.
Hirayama, Emily has competed in 8 meets.