swimMackenzie Choinski
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.68 | AA+0.69s to AAA·Sectionals ✓+1.79s to Futures | 2024-05-11 | Express May 11, 2024 Open Meetvenue |
| 100 Freestyle | SCY | 53.21 | AAA+1.52s to AAAA·Sectionals ✓+1.32s to Futures | 2024-01-06 | 2024 MAC Short Course Midwest Invitationalvenue |
| 500 Freestyle | SCY | 5:18.75 | AA+3.16s to AAA·Sectionals ✓+16.16s to Futures | 2024-01-05 | 2024 MAC Short Course Midwest Invitationalvenue |
| 100 Backstroke | SCY | 56.58 | AAA+0.69s to AAAA·Futures ✓+1.49s to Winter JNs | 2024-01-06 | 2024 MAC Short Course Midwest Invitationalvenue |
| 200 Backstroke | SCY | 2:36.42 | B+6.33s to BB·+23.13s to Sectionals | 2025-11-21 | Arena Mid-Season Showdown 2025 |
| 200 Individual Medley | SCY | 2:15.01 | AA+4.42s to AAA·Sectionals ✓+8.62s to Futures | 2024-01-06 | 2024 MAC Short Course Midwest Invitationalvenue |
| 50 Freestyle | LCM | 28.22 | AAA+1.13s to AAAA·Sectionals ✓+0.83s to Futures | 2024-06-02 | 2024 BAC Jack Pettinger Invitationalvenue |
| 100 Freestyle | LCM | 1:01.01 | AAA+2.32s to AAAA·Sectionals ✓+1.72s to Futures | 2024-06-01 | 2024 BAC Jack Pettinger Invitationalvenue |
| 200 Freestyle | LCM | 2:21.73 | A+2.54s to AA·+2.74s to Sectionals | 2025-06-28 | 2025 LC Western Great Lakes Openvenue |
| 400 Freestyle | LCM | 4:42.85 | AA+1.76s to AAA·Sectionals ✓+14.06s to Futures | 2024-05-31 | 2024 BAC Jack Pettinger Invitationalvenue |
| 50 Backstroke | LCM | 31.27 | AAA+0.18s to AAAA·+0.38s to Futures | 2025-07-25 | 2025 TYR FUTURES MADISONvenue |
| 100 Backstroke | LCM | 1:06.36 | AAA+1.07s to AAAA·Futures ✓+1.57s to Winter JNs | 2024-06-01 | 2024 BAC Jack Pettinger Invitationalvenue |
| 200 Backstroke | LCM | 2:27.67 | AAA+6.18s to AAAA·Sectionals ✓+3.68s to Futures | 2024-05-04 | Daniel Jaekel Friendship Classic 2024slow pool |
| 100 Butterfly | LCM | 1:15.04 | BB+2.75s to A·+5.75s to Sectionals | 2024-06-30 | 2024 Last Dance Openvenue |
| 200 Individual Medley | LCM | 2:39.92 | A+3.23s to AA·+2.93s to Sectionals | 2025-05-31 | 2025 BAC Jack Pettinger Invitationalvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.59 | flat | 200 Free Relay | 2024-05-11 | Express May 11, 2024 Open Meet |
| 50 Backstroke | LCM | 32.09 | flat | 200 Medley Relay | 2025-06-28 | 2025 LC Western Great Lakes Open |
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 17-18 · LCM
2361 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:42.85 | 823 |
| 200 BK LCM | 2:27.67 | 839 |
| 200 IM LCM | 2:39.92 | 699 |
| 200 BR LCM | — | 0 |
| 200 FL LCM | — | 0 |
| 400 IM LCM | — | 0 |
IMR 17-18 · LCM
2898 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:21.73 | 699 |
| 100 BK LCM | 1:06.36 | 917 |
| 100 FL LCM | 1:15.04 | 583 |
| 200 IM LCM | 2:39.92 | 699 |
| 100 BR LCM | — | 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 53.21
Front half 25.95s · back half 27.26s
500 Freestyle SCY 5:18.75
Front half 159.91s · back half 158.84s
100 Backstroke SCY 56.58
Front half 28.04s · back half 28.54s
200 Backstroke SCY 2:36.42 split/total mismatch
200 Individual Medley SCY 2:15.01
Front half 63.17s · back half 71.84s
100 Freestyle LCM 1:01.01
Front half 29.55s · back half 31.46s
200 Freestyle LCM 2:21.73
Front half 69.38s · back half 72.35s
400 Freestyle LCM 4:42.85
Front half 139.14s · back half 143.71s
100 Backstroke LCM 1:06.36
Front half 32.65s · back half 33.71s
200 Backstroke LCM 2:27.67
Front half 72.53s · back half 75.14s
200 Individual Medley LCM 2:39.92
Front half 75.83s · back half 84.09s
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.