| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:32.22 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Breaststroke | 1:47.24 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Butterfly | 1:42.03 | 2026 Trojan Pentathlon | 2026-03-06 |
| 100m Freestyle | 1:17.37 | 2026 Huronia SC Regional Championships | 2026-02-06 |
| 100m IM | 1:33.81 | 2026 Trojan Pentathlon | 2026-03-06 |
| 1500m Freestyle | 8:07.84 | Otters Devo & Distance Winter Waves | 2026-01-24 |
| 200m Backstroke | 3:25.11 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m Breaststroke | 3:53.90 | 2026 Huronia SC Regional Championships | 2026-02-06 |
| 200m Freestyle | 2:53.33 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m IM | 3:20.54 | 2026 Trojan Pentathlon | 2026-03-06 |
| 400m Freestyle | 6:08.30 | 2026 Huronia SC Regional Championships | 2026-02-06 |
| 50m Backstroke | 43.08 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Breaststroke | 49.14 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 50m Butterfly | 44.83 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Freestyle | 35.13 | 2026 Huronia SC Regional Championships | 2026-02-06 |
| 800m Freestyle | 12:42.53 | 2026 Huronia SC Regional Championships | 2026-02-06 |
Brett, Nelson's top personal bests include 100m Backstroke (1:32.22), 100m Breaststroke (1:47.24), 100m Butterfly (1:42.03), 100m Freestyle (1:17.37), 100m IM (1:33.81).
Brett, Nelson swims for Orangeville Otters Swim Club.
Brett, Nelson has competed in 9 meets.