| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 57.47 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 100m Butterfly | 59.00 | 2025 RHAC Summer League | 2025-07-18 |
| 100m Freestyle | 52.55 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Backstroke | 2:05.49 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Freestyle | 1:54.51 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 200m IM | 2:09.99 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Backstroke | 26.88 | 2025 NYAC Cup | 2025-11-14 |
| 50m Breaststroke | 32.99 | 2025 Red vs Black #1 | 2025-10-05 |
| 50m Butterfly | 26.51 | 2025 Red vs Black #1 | 2025-10-05 |
| 50m Freestyle | 24.36 | 2025 Red vs Black #1 | 2025-10-05 |
Chan, Junhao Alexander's top personal bests include 100m Backstroke (57.47), 100m Butterfly (59.00), 100m Freestyle (52.55), 200m Backstroke (2:05.49), 200m Freestyle (1:54.51).
Chan, Junhao Alexander swims for North York Aquatic Club.
Chan, Junhao Alexander has competed in 6 meets.