| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Butterfly | 1:35.01 | 2025 LC Far Western Championship | 2025-07-31 |
| 200m Freestyle | 2:50.59 | 2025 LC Far Western Championship | 2025-07-31 |
| 50m Backstroke | 42.40 | 2025 LC Far Western Championship | 2025-07-31 |
| 50m Butterfly | 39.65 | 2025 LC Far Western Championship | 2025-07-31 |
Stefan, Marcus's top personal bests include 100m Butterfly (1:35.01), 200m Freestyle (2:50.59), 50m Backstroke (42.40), 50m Butterfly (39.65).
Stefan, Marcus swims for TEAMGOLDUSA.
Stefan, Marcus has competed in 1 meets.