| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:05.06 | 2025 Summer Divisionals - North & Interior | 2025-06-27 |
| 100m Breaststroke | 1:19.56 | VKSC Nolan's Pharmasave Invitational Swim Meet | 2025-04-12 |
| 100m Butterfly | 1:03.27 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 100m Freestyle | 54.99 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 100m IM | 1:08.38 | VKSC Nolan's Pharmasave Invitational Swim Meet | 2025-04-12 |
| 200m Backstroke | 2:19.07 | 2025 Summer Divisionals - North & Interior | 2025-06-27 |
| 200m Breaststroke | 2:58.23 | Smile Enhancement Studio 2025 Pentathlon | 2025-10-17 |
| 200m Butterfly | 2:49.65 | Smile Enhancement Studio 2025 Pentathlon | 2025-10-17 |
| 200m Freestyle | 1:59.75 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 200m IM | 2:16.16 | KCS 32nd MJB Law Classic SCM | 2025-12-12 |
| 400m Freestyle | 4:18.50 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 400m IM | 5:24.03 | Smile Enhancement Studio 2025 Pentathlon | 2025-10-17 |
| 50m Backstroke | 30.39 | 2025 Summer Divisionals - North & Interior | 2025-06-27 |
| 50m Breaststroke | 35.02 | 2025 Summer Divisionals - North & Interior | 2025-06-27 |
| 50m Butterfly | 28.19 | BC Winter Divisionals - North & Interior | 2026-02-20 |
| 50m Freestyle | 24.99 | KCS 32nd MJB Law Classic SCM | 2025-12-12 |
| 800m Freestyle | 9:25.20 | BC Winter Divisionals - North & Interior | 2026-02-20 |
Callahan, Daniel's top personal bests include 100m Backstroke (1:05.06), 100m Breaststroke (1:19.56), 100m Butterfly (1:03.27), 100m Freestyle (54.99), 100m IM (1:08.38).
Callahan, Daniel swims for KISU Swim Club.
Callahan, Daniel has competed in 8 meets.