| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:47.97 | Nose Creek Invitational 2026 | 2026-03-14 |
| 100m Breaststroke | 2:09.00 | Pugsley's Plunge 2026 | 2026-01-16 |
| 100m Freestyle | 1:39.28 | Nose Creek Invitational 2026 | 2026-03-14 |
| 100m IM | 1:49.04 | Nose Creek Invitational 2026 | 2026-03-14 |
| 200m Backstroke | 3:54.10 | Nose Creek Invitational 2026 | 2026-03-14 |
| 200m Freestyle | 4:01.58 | Pugsley's Plunge 2026 | 2026-01-16 |
| 200m IM | 3:51.07 | Nose Creek Invitational 2026 | 2026-03-14 |
| 50m Backstroke | 51.10 | Pugsley's Plunge 2026 | 2026-01-16 |
| 50m Breaststroke | 1:00.35 | Pugsley's Plunge 2026 | 2026-01-16 |
| 50m Butterfly | 47.61 | Pugsley's Plunge 2026 | 2026-01-16 |
| 50m Freestyle | 47.81 | Mountain Madness 2025 | 2025-10-18 |
Ellens, Nathaniel's top personal bests include 100m Backstroke (1:47.97), 100m Breaststroke (2:09.00), 100m Freestyle (1:39.28), 100m IM (1:49.04), 200m Backstroke (3:54.10).
Ellens, Nathaniel swims for Calgary Patriots Swim Club.
Ellens, Nathaniel has competed in 5 meets.