| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:21.42 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Breaststroke | 1:35.62 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Butterfly | 1:17.00 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Freestyle | 1:06.65 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m IM | 1:20.78 | St. James Seals Invitational | 2026-01-23 |
| 200m Freestyle | 2:30.42 | Manitoba Open Junior Provincials | 2026-02-06 |
| 200m IM | 2:55.27 | Manitoba Open Junior Provincials | 2026-02-06 |
| 50m Backstroke | 40.80 | Bison Sprint IM Invitational | 2025-10-18 |
| 50m Breaststroke | 45.13 | Bison Sprint IM Invitational | 2025-10-18 |
| 50m Butterfly | 33.34 | Manitoba Open Junior Provincials | 2026-02-06 |
| 50m Freestyle | 29.64 | Swim Manitoba Class II Time Trial | 2026-02-28 |
Isaac Miller's top personal bests include 100m Backstroke (1:21.42), 100m Breaststroke (1:35.62), 100m Butterfly (1:17.00), 100m Freestyle (1:06.65), 100m IM (1:20.78).
Isaac Miller swims for University of Manitoba.
Isaac Miller has competed in 8 meets.