swimLeah Mason
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.84 | AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 100 Freestyle | SCY | 54.11 | AAA+2.12s to AAAA | 2025-01-11 | 2025 MN FOXJ Winter Classic venue |
| 200 Freestyle | SCY | 2:01.08 | AA+3.69s to AAA | 2025-01-12 | 2025 MN FOXJ Winter Classic venue |
| 50 Backstroke | SCY | 25.79 | AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 100 Backstroke | SCY | 58.75 | AAA+2.46s to AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 50 Butterfly | SCY | 25.43 | AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 100 Butterfly | SCY | 56.83 | AAA+0.74s to AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 200 Butterfly | SCY | 2:08.82 | AAA+4.03s to AAAA | 2026-02-26 | 2026 Iowa Swimming Short Course Championships |
| 50 Freestyle | LCM | 27.88 | AAA+0.59s to AAAA | 2024-01-01 | 1496967 |
| 100 Freestyle | LCM | 1:01.86 | AA+0.17s to AAA | 2024-07-28 | 2024 IA Long Course Championships venue |
| 200 Freestyle | LCM | 2:20.11 | A+0.82s to AA | 2024-07-26 | 2024 IA Long Course Championships venue |
| 400 Freestyle | LCM | 4:53.47 | AA+11.38s to AAA | 2024-07-27 | 2024 IA Long Course Championships venue |
| 100 Backstroke | LCM | 1:11.34 | AA+2.55s to AAA | 2024-07-27 | 2024 IA Long Course Championships venue |
| 50 Butterfly | LCM | 29.63 | AAA+0.24s to AAAA | 2025-07-24 | 2025 TYR FUTURES MADISON venue |
| 100 Butterfly | LCM | 1:05.82 | AAA+2.53s to AAAA | 2025-07-23 | 2025 TYR FUTURES MADISON |
| 200 Butterfly | LCM | 2:38.77 | A+4.18s to AA | 2024-07-28 | 2024 IA Long Course Championships venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 200 Freestyle | SCY | 1:58.79 | flying | 800 Free Relay (leg 2) | 2025-03-13 | 2025 MN RSC CZ North Section Spring Champions |
| 100 Freestyle | LCM | 1:03.86 | flying | 400 Free Relay (leg 4) | 2024-07-25 | 2024 IA Long Course Championships |
| 100 Butterfly | LCM | 1:09.99 | flying | 400 Medley Relay (leg 3) | 2024-07-27 | 2024 IA Long Course Championships |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 15-16 · LCM
1445 points (2/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:53.47 | 747 |
| 200 FL LCM | 2:38.77 | 698 |
| 200 BK LCM | — | 0 |
| 200 BR LCM | — | 0 |
| 200 IM LCM | — | 0 |
| 400 IM LCM | — | 0 |
IMR 15-16 · SCY
2603 points (3/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:01.08 | 787 |
| 100 BK SCY | 58.75 | 870 |
| 100 FL SCY | 56.83 | 946 |
| 100 BR SCY | — | 0 |
| 200 IM SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 54.11
Front half 25.61s · back half 28.50s
200 Freestyle SCY 2:01.08
Front half 59.00s · back half 62.08s
100 Backstroke SCY 58.75 split/total mismatch
Front half 28.33s · back half 30.42s
100 Butterfly SCY 56.83 split/total mismatch
Front half 26.35s · back half 30.48s
200 Butterfly SCY 2:08.82 split/total mismatch
Front half 31.94s · back half 96.88s
100 Freestyle LCM 1:01.86
Front half 29.60s · back half 32.26s
200 Freestyle LCM 2:20.11
Front half 67.84s · back half 72.27s
400 Freestyle LCM 4:53.47
Front half 146.15s · back half 147.32s
100 Backstroke LCM 1:11.34
Front half 33.58s · back half 37.76s
100 Butterfly LCM 1:05.82 split/total mismatch
Front half 30.35s · back half 35.47s
200 Butterfly LCM 2:38.77
Front half 74.09s · back half 84.68s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Progression
Faster times are higher. One card per event, all courses & history.