| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:21.78 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Breaststroke | 1:37.68 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Freestyle | 1:11.71 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m IM | 1:23.31 | 2026 Trojan Pentathlon | 2026-03-06 |
| 200m Breaststroke | 3:37.40 | 2026 Trojan Pentathlon | 2026-03-06 |
| 200m IM | 3:08.90 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Backstroke | 36.24 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Breaststroke | 43.28 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Butterfly | 35.70 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Freestyle | 30.15 | 2026 Joanne Malar Invitational | 2026-01-16 |
Hennessy, Nathan's top personal bests include 100m Backstroke (1:21.78), 100m Breaststroke (1:37.68), 100m Freestyle (1:11.71), 100m IM (1:23.31), 200m Breaststroke (3:37.40).
Hennessy, Nathan swims for Lakeshore Swim Club.
Hennessy, Nathan has competed in 3 meets.