| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:24.35 | 2026 Wavemaker | 2026-04-17 |
| 100m Backstroke | 1:24.29 | 2026 Stingrays Annual Spring Break Invitational | 2026-03-06 |
| 100m Breaststroke | 1:53.22 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
| 100m Butterfly | 1:48.48 | 2025 Stingrays' Annual Winter Break Invitational | 2025-12-12 |
| 100m Freestyle | 1:19.88 | 2026 Wavemaker | 2026-04-17 |
| 100m Freestyle | 1:21.93 | 2026 Stingrays Annual Spring Break Invitational | 2026-03-06 |
| 100m IM | 1:44.72 | Rubber Ducky #1 | 2025-11-02 |
| 200m Backstroke | 3:00.38 | 2026 Stingrays Annual Spring Break Invitational | 2026-03-06 |
| 200m Freestyle | 2:55.86 | 2026 Wavemaker | 2026-04-17 |
| 200m Freestyle | 2:55.11 | 2026 VIR SC Championships | 2026-01-30 |
| 200m IM | 3:22.69 | 2026 VIR SC Championships | 2026-01-30 |
| 400m Freestyle | 6:06.69 | 2026 Stingrays Annual Spring Break Invitational | 2026-03-06 |
| 50m Backstroke | 39.67 | 2026 Wavemaker | 2026-04-17 |
| 50m Backstroke | 40.45 | 2026 VIR SC Championships | 2026-01-30 |
| 50m Breaststroke | 47.93 | 2026 Wavemaker | 2026-04-17 |
| 50m Breaststroke | 51.23 | 2026 Stingrays Annual Spring Break Invitational | 2026-03-06 |
| 50m Butterfly | 50.71 | Rubber Ducky #1 | 2025-11-02 |
| 50m Freestyle | 35.26 | 2026 Wavemaker | 2026-04-17 |
| 50m Freestyle | 35.37 | 2026 VIR SC Championships | 2026-01-30 |
McConnachie, Callum's top personal bests include 100m Backstroke (1:24.35), 100m Backstroke (1:24.29), 100m Breaststroke (1:53.22), 100m Butterfly (1:48.48), 100m Freestyle (1:19.88).
McConnachie, Callum swims for Island Swimming Club.
McConnachie, Callum has competed in 8 meets.