| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:09.27 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m Breaststroke | 1:28.12 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Butterfly | 1:18.98 | SCAR Cindy Nicholas Memorial Meet | 2025-11-01 |
| 100m Freestyle | 1:02.25 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Backstroke | 2:25.62 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Freestyle | 2:13.95 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:33.93 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 400m Freestyle | 4:46.21 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 400m IM | 5:34.31 | SCAR Cindy Nicholas Memorial Meet | 2025-11-01 |
| 50m Backstroke | 32.15 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Breaststroke | 42.98 | SCAR Cindy Nicholas Memorial Meet | 2025-11-01 |
| 50m Butterfly | 34.13 | PICK Lisa Flood Classic 2025 | 2025-12-05 |
| 50m Freestyle | 28.07 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 800m Freestyle | 10:16.29 | PICK Lisa Flood Classic 2025 | 2025-12-05 |
McDermott, Benjamin's top personal bests include 100m Backstroke (1:09.27), 100m Breaststroke (1:28.12), 100m Butterfly (1:18.98), 100m Freestyle (1:02.25), 200m Backstroke (2:25.62).
McDermott, Benjamin swims for North York Aquatic Club.
McDermott, Benjamin has competed in 9 meets.