| Event | Time | Meet | Date |
|---|---|---|---|
| 25m Backstroke | 29.56 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 25m Breaststroke | 43.36 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 25m Butterfly | 38.20 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 25m Freestyle | 33.32 | 2026 MMST Winter Novice Meet | 2026-01-10 |
| 50m Backstroke | 1:08.56 | Friday Night at the Races #3 | 2026-03-13 |
| 50m Freestyle | 1:19.19 | Friday Night at the Races #3 | 2026-03-13 |
Nirmalan, Kathir's top personal bests include 25m Backstroke (29.56), 25m Breaststroke (43.36), 25m Butterfly (38.20), 25m Freestyle (33.32), 50m Backstroke (1:08.56).
Nirmalan, Kathir swims for Halton Hills Blue Fins.
Nirmalan, Kathir has competed in 5 meets.