| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:11.98 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Breaststroke | 1:20.00 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Butterfly | 1:20.24 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Freestyle | 59.75 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Backstroke | 2:39.08 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Breaststroke | 2:54.61 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Freestyle | 2:16.54 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 2:38.61 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 400m Freestyle | 5:00.38 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 400m IM | 5:47.29 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 50m Backstroke | 33.40 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Breaststroke | 36.09 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Butterfly | 34.27 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 50m Freestyle | 27.20 | Elaine Thompson Memorial Meet | 2026-01-24 |
Langlois, Nathan's top personal bests include 100m Backstroke (1:11.98), 100m Breaststroke (1:20.00), 100m Butterfly (1:20.24), 100m Freestyle (59.75), 200m Backstroke (2:39.08).
Langlois, Nathan swims for COBRA Swim Club.
Langlois, Nathan has competed in 10 meets.