| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:22.66 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 100m Backstroke | 1:18.41 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Breaststroke | 1:33.78 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 100m Breaststroke | 1:29.71 | 2025 MSSAC Open | 2025-12-19 |
| 100m Freestyle | 1:09.42 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m IM | 1:18.01 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m Backstroke | 3:08.41 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 200m Backstroke | 2:57.50 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 200m Breaststroke | 3:13.38 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m Freestyle | 2:41.77 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 200m IM | 3:07.17 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 400m IM | 6:41.73 | 2025 MSSAC Open | 2025-12-19 |
| 50m Backstroke | 35.84 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Breaststroke | 41.72 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 50m Butterfly | 33.56 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Freestyle | 30.32 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 50m Freestyle | 29.65 | 2026 Steve Kingston Memorial | 2026-03-06 |
Mihalache, David's top personal bests include 100m Backstroke (1:22.66), 100m Backstroke (1:18.41), 100m Breaststroke (1:33.78), 100m Breaststroke (1:29.71), 100m Freestyle (1:09.42).
Mihalache, David swims for The Richmond Hill Aquatic Club.
Mihalache, David has competed in 6 meets.