Marcia Cossatis at 2026 Ontario Masters Provincials
| Event | Result | Place | Date |
|---|---|---|---|
| 50m Freestyle | NS | -- | 2026-04-19 |
| 50m Breaststroke | NS | -- | 2026-04-19 |
| 800m Freestyle | 11:23.02 SCM | 3 | 2026-04-19 |
| 100m Breaststroke | 1:28.48 SCM | 4 | 2026-04-18 |
| 200m Breaststroke | NS | -- | 2026-04-18 |
| 50m Freestyle | NS | -- | 2026-04-18 |