Mackenzie Marzen
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Backstroke | SCY | 40.33 | 2026-03-21 | 2026 RMSC Spring Finale fast pool | |
| 100 Backstroke | SCY | 1:34.15 | 2025-11-16 | 2025 RMSC November Dual Meet venue | |
| 50 Breaststroke | SCY | 50.58 | 2026-03-21 | 2026 RMSC Spring Finale fast pool |
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
PR splits
100 Backstroke SCY 1:34.15
Front half 45.20s · back half 48.95s
Progression
Faster times are higher. One card per event, all courses & history.