| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:36.93 | MAC Jingle Bell | 2025-12-12 |
| 100m Breaststroke | 1:43.04 | MAC Jingle Bell | 2025-12-12 |
| 100m Freestyle | 1:19.84 | Pan Am Open 2026 | 2026-02-21 |
| 100m IM | 1:33.87 | MAC Jingle Bell | 2025-12-12 |
| 200m Backstroke | 3:27.79 | MAC Rising Star #1 | 2025-11-08 |
| 200m Breaststroke | 3:42.64 | Pan Am Open 2026 | 2026-02-21 |
| 200m Freestyle | 2:57.74 | Pan Am Open 2026 | 2026-02-21 |
| 200m IM | 3:25.32 | MAC Jingle Bell | 2025-12-12 |
| 400m Freestyle | 6:31.89 | MAC Jingle Bell | 2025-12-12 |
| 50m Breaststroke | 48.08 | Pan Am Open 2026 | 2026-02-21 |
| 50m Freestyle | 35.52 | Pan Am Open 2026 | 2026-02-21 |
Cheng, Ian's top personal bests include 100m Backstroke (1:36.93), 100m Breaststroke (1:43.04), 100m Freestyle (1:19.84), 100m IM (1:33.87), 200m Backstroke (3:27.79).
Cheng, Ian swims for Markham Aquatic Club.
Cheng, Ian has competed in 6 meets.