| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:19.99 | Winter Provincial Trials | 2026-03-06 |
| 100m Breaststroke | 1:35.41 | Winter Provincial Trials | 2026-03-06 |
| 100m Butterfly | 1:24.04 | Winter Provincial Trials | 2026-03-06 |
| 100m Freestyle | 1:17.51 | Winter Festival | 2026-01-23 |
| 100m IM | 1:26.94 | Winter Festival | 2026-01-23 |
| 200m Backstroke | 2:48.78 | Winter Provincial Trials | 2026-03-06 |
| 200m Breaststroke | 3:15.90 | Winter Provincial Trials | 2026-03-06 |
| 200m Butterfly | 3:05.93 | Winter Provincial Trials | 2026-03-06 |
| 200m Freestyle | 2:41.34 | Winter Provincial Trials | 2026-03-06 |
| 200m IM | 2:58.83 | Winter Festival | 2026-01-23 |
| 400m Freestyle | 5:40.21 | Winter Festival | 2026-01-23 |
| 50m Backstroke | 40.07 | Winter Festival | 2026-01-23 |
| 50m Breaststroke | 47.41 | Candy Cane Invitational | 2025-11-28 |
| 50m Butterfly | 38.49 | Winter Festival | 2026-01-23 |
| 50m Freestyle | 36.72 | Octoberfest | 2025-10-18 |
| 800m Freestyle | 11:27.42 | Blue Bears Invitational | 2026-01-16 |
Nelson, Oskar's top personal bests include 100m Backstroke (1:19.99), 100m Breaststroke (1:35.41), 100m Butterfly (1:24.04), 100m Freestyle (1:17.51), 100m IM (1:26.94).
Nelson, Oskar swims for Edmonton Keyano Swim Club.
Nelson, Oskar has competed in 8 meets.