| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:33.40 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 100m Backstroke | 1:31.48 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Breaststroke | 1:43.88 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 100m Breaststroke | 1:38.32 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Freestyle | 1:17.35 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 100m Freestyle | 1:14.69 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 100m IM | 1:32.25 | MAC Jingle Bell | 2025-12-12 |
| 200m Backstroke | 3:22.81 | MAC Jingle Bell | 2025-12-12 |
| 200m Breaststroke | 3:32.01 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Freestyle | 2:52.11 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 200m Freestyle | 2:44.37 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 3:20.53 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 400m Freestyle | 6:36.06 | RHAC Winter Invitational 2026 | 2026-01-16 |
| 50m Backstroke | 42.71 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Breaststroke | 47.25 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Breaststroke | 44.50 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Butterfly | 43.03 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Freestyle | 34.79 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Freestyle | 34.06 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Cheng, Lukas's top personal bests include 100m Backstroke (1:33.40), 100m Backstroke (1:31.48), 100m Breaststroke (1:43.88), 100m Breaststroke (1:38.32), 100m Freestyle (1:17.35).
Cheng, Lukas swims for Swim Apex Aquatic Club.
Cheng, Lukas has competed in 7 meets.