| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:29.23 | UCSC Spring Start-up | 2026-04-25 |
| 100m Backstroke | 1:27.03 | Winter Festival | 2026-01-23 |
| 100m Breaststroke | 1:44.14 | Nose Creek Invitational 2026 | 2026-03-14 |
| 100m Butterfly | 1:41.92 | UCSC February Invitational | 2026-02-21 |
| 100m Freestyle | 1:19.33 | UCSC Spring Start-up | 2026-04-25 |
| 100m Freestyle | 1:14.37 | Nose Creek Invitational 2026 | 2026-03-14 |
| 100m IM | 1:28.71 | 2026 Fernie Fox Invitational | 2026-04-17 |
| 200m Backstroke | 3:05.11 | Winter Festival | 2026-01-23 |
| 200m Breaststroke | 3:41.62 | UCSC February Invitational | 2026-02-21 |
| 200m Freestyle | 2:45.68 | UCSC February Invitational | 2026-02-21 |
| 200m IM | 3:21.70 | UCSC Spring Start-up | 2026-04-25 |
| 200m IM | 3:18.36 | UCSC Holiday Classic | 2025-12-13 |
| 400m Freestyle | 5:56.00 | Winter Festival | 2026-01-23 |
| 50m Backstroke | 39.54 | Nose Creek Invitational 2026 | 2026-03-14 |
| 50m Breaststroke | 51.72 | UCSC Spring Start-up | 2026-04-25 |
| 50m Breaststroke | 47.38 | UCSC February Invitational | 2026-02-21 |
| 50m Butterfly | 45.42 | UCSC Spring Start-up | 2026-04-25 |
| 50m Butterfly | 43.02 | Nose Creek Invitational 2026 | 2026-03-14 |
| 50m Freestyle | 35.58 | UCSC Spring Start-up | 2026-04-25 |
| 50m Freestyle | 33.93 | Winter Festival | 2026-01-23 |
| 800m Freestyle | 12:33.45 | 2026 Fernie Fox Invitational | 2026-04-17 |
Sadler, Isla's top personal bests include 100m Backstroke (1:29.23), 100m Backstroke (1:27.03), 100m Breaststroke (1:44.14), 100m Butterfly (1:41.92), 100m Freestyle (1:19.33).
Sadler, Isla swims for Calgary Swimming.
Sadler, Isla has competed in 9 meets.