| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:16.75 | TMSC Invitational 2026 | 2026-01-10 |
| 100m Breaststroke | 1:26.58 | TMSC Invitational 2026 | 2026-01-10 |
| 100m Butterfly | 1:16.97 | KLAC NEOR DEVELOPMENTAL MEET #2 | 2026-01-24 |
| 100m Freestyle | 1:03.33 | 2026 Dave Kensit Memorial SC Championship | 2026-02-06 |
| 200m Backstroke | 2:47.69 | KIrkland Lake Aquatic Club Invitational 2025 | 2025-12-06 |
| 200m Breaststroke | 3:10.95 | KIrkland Lake Aquatic Club Invitational 2025 | 2025-12-06 |
| 200m Freestyle | 2:19.51 | 2026 Dave Kensit Memorial SC Championship | 2026-02-06 |
| 200m IM | 2:35.82 | 2026 Dave Kensit Memorial SC Championship | 2026-02-06 |
| 400m Freestyle | 5:01.40 | KLAC NEOR DEVELOPMENTAL MEET #2 | 2026-01-24 |
| 400m IM | 5:45.03 | KIrkland Lake Aquatic Club Invitational 2025 | 2025-12-06 |
| 50m Backstroke | 35.19 | 2026 Dave Kensit Memorial SC Championship | 2026-02-06 |
| 50m Breaststroke | 39.63 | 2026 Dave Kensit Memorial SC Championship | 2026-02-06 |
| 50m Butterfly | 34.57 | KLAC NEOR DEVELOPMENTAL MEET #2 | 2026-01-24 |
| 50m Freestyle | 28.50 | KIrkland Lake Aquatic Club Invitational 2025 | 2025-12-06 |
Mayhew, Sophia's top personal bests include 100m Backstroke (1:16.75), 100m Breaststroke (1:26.58), 100m Butterfly (1:16.97), 100m Freestyle (1:03.33), 200m Backstroke (2:47.69).
Mayhew, Sophia swims for Temiskaming Northern Loons Swim Club.
Mayhew, Sophia has competed in 6 meets.