| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:00.30 | MAC Winter Invitational | 2026-01-22 |
| 100m Backstroke | 57.47 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 100m Butterfly | 1:00.51 | June Performance Meet 2025 | 2025-06-06 |
| 100m Butterfly | 59.00 | 2025 RHAC Summer League | 2025-07-18 |
| 100m Freestyle | 54.32 | MAC Winter Invitational | 2026-01-22 |
| 100m Freestyle | 52.55 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Backstroke | 2:13.27 | MAC Winter Invitational | 2026-01-22 |
| 200m Backstroke | 2:05.49 | 2025 RHAC Summer League | 2025-07-18 |
| 200m Freestyle | 2:01.76 | MAC Winter Invitational | 2026-01-22 |
| 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 | 27.29 | MAC Winter Invitational | 2026-01-22 |
| 50m Backstroke | 26.88 | 2025 NYAC Cup | 2025-11-14 |
| 50m Breaststroke | 34.93 | June Performance Meet 2025 | 2025-06-06 |
| 50m Breaststroke | 32.99 | 2025 Red vs Black #1 | 2025-10-05 |
| 50m Butterfly | 27.12 | June Performance Meet 2025 | 2025-06-06 |
| 50m Butterfly | 26.51 | 2025 Red vs Black #1 | 2025-10-05 |
| 50m Freestyle | 25.33 | MAC Winter Invitational | 2026-01-22 |
| 50m Freestyle | 24.36 | 2025 Red vs Black #1 | 2025-10-05 |
Chan, Junhao Alexander's top personal bests include 100m Backstroke (1:00.30), 100m Backstroke (57.47), 100m Butterfly (1:00.51), 100m Butterfly (59.00), 100m Freestyle (54.32).
Chan, Junhao Alexander swims for North York Aquatic Club.
Chan, Junhao Alexander has competed in 6 meets.