swimMackenna Seiffertt
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 21.94 | 2026-01-01 | 2019 RSCA Spring Fling | |
| 50 Freestyle | SCY | 52.14 | +26.85s to Sectionals | 2026-01-01 | 2019 RSCA Spring Fling |
| 100 Freestyle | SCY | 1:43.22 | +48.73s to Sectionals | 2019-12-06 | Holiday H2O Invitational |
| 25 Backstroke | SCY | 19.32 | 2026-01-01 | 2019 RSCA Spring Fling | |
| 50 Backstroke | SCY | 41.79 | +14.50s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 100 Backstroke | SCY | 1:29.31 | +28.82s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 25 Breaststroke | SCY | 26.68 | 2020-03-07 | HEATLightning and 8 & Under Champs | |
| 50 Breaststroke | SCY | 48.65 | +17.96s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 100 Breaststroke | SCY | 1:46.06 | +36.57s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 25 Butterfly | SCY | 22.56 | 2019-11-02 | HEAT Swimming's Fall Classic 2019 | |
| 50 Butterfly | SCY | 40.89 | +14.20s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 100 Butterfly | SCY | 1:32.91 | +33.32s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
| 200 Individual Medley | SCY | 3:16.15 | +63.16s to Sectionals | 2022-09-23 | 2022 PKWY IMX Challenge |
National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.
IMX / IMR
IMX 10 & under · SCY
1836 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK SCY | 1:29.31 | 493 |
| 100 BR SCY | 1:46.06 | 432 |
| 100 FL SCY | 1:32.91 | 444 |
| 200 IM SCY | 3:16.15 | 467 |
| 200 FR SCY | — | 0 |
IMR 10 & under · SCY
1571 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 FR SCY | 1:43.22 | 214 |
| 50 BK SCY | 41.79 | 474 |
| 50 BR SCY | 48.65 | 435 |
| 50 FL SCY | 40.89 | 448 |
| 100 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 Backstroke SCY 1:29.31 split/total mismatch
Front half 43.53s · back half 45.78s
100 Breaststroke SCY 1:46.06 split/total mismatch
Front half 50.16s · back half 55.90s
100 Butterfly SCY 1:32.91 split/total mismatch
Front half 39.93s · back half 52.98s
200 Individual Medley SCY 3:16.15 split/total mismatch
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.