| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:51.16 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Breaststroke | 2:13.38 | 2025 Alan Swanston Classic | 2025-12-05 |
| 100m Butterfly | 2:05.21 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Freestyle | 1:38.67 | Otters Devo & Distance Winter Waves | 2026-01-24 |
| 100m IM | 1:54.98 | 2026 Trojan Pentathlon | 2026-03-06 |
| 200m Backstroke | 3:40.43 | 2026 Trojan Pentathlon | 2026-03-06 |
| 200m Breaststroke | 4:38.38 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m Freestyle | 3:39.26 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m IM | 4:08.32 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Backstroke | 50.20 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Breaststroke | 1:00.75 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Butterfly | 54.66 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Freestyle | 43.18 | 2026 Trojan Pentathlon | 2026-03-06 |
Blais, Nathan's top personal bests include 100m Backstroke (1:51.16), 100m Breaststroke (2:13.38), 100m Butterfly (2:05.21), 100m Freestyle (1:38.67), 100m IM (1:54.98).
Blais, Nathan swims for Orangeville Otters Swim Club.
Blais, Nathan has competed in 8 meets.