| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:23.30 | BC Winter Divisionals - Island & Coastal Vancouver | 2026-02-20 |
| 100m Breaststroke | 1:29.90 | Mies Schootman Invitational 2026 | 2026-01-16 |
| 100m Butterfly | 1:29.93 | Delta March LMR | 2026-03-14 |
| 100m Freestyle | 1:13.15 | BC Winter Divisionals - Island & Coastal Vancouver | 2026-02-20 |
| 100m IM | 1:31.01 | SKSC Summerfest 2025 | 2025-07-26 |
| 200m Backstroke | 3:07.01 | Mies Schootman Invitational 2026 | 2026-01-16 |
| 200m Breaststroke | 3:10.68 | Delta March LMR | 2026-03-14 |
| 200m Freestyle | 2:44.25 | Delta March LMR | 2026-03-14 |
| 200m IM | 3:01.41 | BC Winter Divisionals - Island & Coastal Vancouver | 2026-02-20 |
| 50m Backstroke | 37.32 | Mies Schootman Invitational 2026 | 2026-01-16 |
| 50m Breaststroke | 38.23 | Delta March LMR | 2026-03-14 |
| 50m Butterfly | 35.66 | Delta March LMR | 2026-03-14 |
| 50m Freestyle | 31.43 | Delta March LMR | 2026-03-14 |
Chen, Marcus's top personal bests include 100m Backstroke (1:23.30), 100m Breaststroke (1:29.90), 100m Butterfly (1:29.93), 100m Freestyle (1:13.15), 100m IM (1:31.01).
Chen, Marcus swims for Richmond Rapids.
Chen, Marcus has competed in 6 meets.