| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:29.28 | KAJ Fall Classic | 2025-11-21 |
| 100m Breaststroke | 1:54.92 | KAJ Fall Classic | 2025-11-21 |
| 100m Butterfly | 1:47.72 | KAJ Snowfest | 2026-01-23 |
| 100m Butterfly | 1:50.47 | Nolans Pharmasave Fall Invitational | 2025-11-07 |
| 100m Freestyle | 1:23.64 | KAJ Snowfest | 2026-01-23 |
| 100m Freestyle | 1:20.91 | Nolans Pharmasave Fall Invitational | 2025-11-07 |
| 100m IM | 1:32.46 | KAJ Fall Classic | 2025-11-21 |
| 200m Backstroke | 3:10.29 | KAJ Snowfest | 2026-01-23 |
| 200m Backstroke | 3:23.23 | VKSC Nolan's Pharmasave Invitational Swim Meet | 2025-04-12 |
| 200m Freestyle | 3:03.23 | KAJ Snowfest | 2026-01-23 |
| 200m Freestyle | 3:02.28 | KCS 32nd MJB Law Classic SCM | 2025-12-12 |
| 200m IM | 3:31.42 | KAJ Snowfest | 2026-01-23 |
| 200m IM | 3:23.34 | Nolans Pharmasave Fall Invitational | 2025-11-07 |
| 400m Freestyle | 6:23.56 | KAJ Fall Classic | 2025-11-21 |
| 50m Backstroke | 42.22 | KAJ Snowfest | 2026-01-23 |
| 50m Backstroke | 41.89 | Smile Enhancement Studio 2025 Pentathlon | 2025-10-17 |
| 50m Breaststroke | 57.46 | KAJ Snowfest | 2026-01-23 |
| 50m Breaststroke | 54.75 | Nolans Pharmasave Fall Invitational | 2025-11-07 |
| 50m Butterfly | 46.98 | KAJ Snowfest | 2026-01-23 |
| 50m Butterfly | 42.95 | KCS 32nd MJB Law Classic SCM | 2025-12-12 |
| 50m Freestyle | 35.58 | KCS 32nd MJB Law Classic SCM | 2025-12-12 |
Johnson, Isaac's top personal bests include 100m Backstroke (1:29.28), 100m Breaststroke (1:54.92), 100m Butterfly (1:47.72), 100m Butterfly (1:50.47), 100m Freestyle (1:23.64).
Johnson, Isaac swims for Kelowna AquaJets.
Johnson, Isaac has competed in 6 meets.