| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:32.50 | MAC Rising Star #1 | 2025-11-08 |
| 100m Breaststroke | 1:35.94 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m Freestyle | 1:21.87 | MAC Jingle Bell | 2025-12-12 |
| 100m IM | 1:27.73 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Backstroke | 3:15.85 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 200m Breaststroke | 3:23.74 | MAC Jingle Bell | 2025-12-12 |
| 200m Freestyle | 3:04.82 | MAC Rising Star #1 | 2025-11-08 |
| 200m IM | 3:11.83 | MAC Jingle Bell | 2025-12-12 |
| 400m Freestyle | 6:29.41 | MAC Rising Star #1 | 2025-11-08 |
| 50m Backstroke | 41.86 | MAC Jingle Bell | 2025-12-12 |
| 50m Breaststroke | 44.76 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Butterfly | 41.91 | MAC Rising Star #1 | 2025-11-08 |
| 50m Freestyle | 37.22 | MAC Jingle Bell | 2025-12-12 |
Xiao, Seren's top personal bests include 100m Backstroke (1:32.50), 100m Breaststroke (1:35.94), 100m Freestyle (1:21.87), 100m IM (1:27.73), 200m Backstroke (3:15.85).
Xiao, Seren swims for Markham Aquatic Club.
Xiao, Seren has competed in 12 meets.