swimSerena Efron
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 32.01 | B+2.02s to BB·+6.72s to Sectionals | 2025-03-09 | 2025 MN EDI Minnesota Regional Championship venue |
| 100 Freestyle | SCY | 1:11.18 | +1.09s to B·+16.69s to Sectionals | 2025-03-07 | 2025 MN EDI Minnesota Regional Championship venue |
| 200 Freestyle | SCY | 2:45.81 | +14.42s to B·+47.92s to Sectionals | 2024-02-04 | 2024 MN WEST Express Last Chance Meet venue |
| 500 Freestyle | SCY | 7:32.09 | +43.90s to B·+137.10s to Sectionals | 2024-01-20 | 2024 MN EDI January SATR venue |
| 100 Backstroke | SCY | 1:12.71 | B+2.22s to BB·+12.22s to Sectionals | 2025-03-08 | 2025 MN EDI Minnesota Regional Championship venue |
| 200 Backstroke | SCY | 2:42.19 | B+9.10s to BB·+30.70s to Sectionals | 2025-01-18 | 2025 MN FOXJ January Distance venue |
| 100 Breaststroke | SCY | 1:26.54 | B+5.35s to BB·+17.05s to Sectionals | 2025-03-07 | 2025 MN EDI Minnesota Regional Championship |
| 200 Breaststroke | SCY | 3:05.30 | B+10.61s to BB·+34.31s to Sectionals | 2025-03-07 | 2025 MN EDI Minnesota Regional Championship |
| 100 Butterfly | SCY | 1:19.36 | +3.57s to B·+19.77s to Sectionals | 2025-03-09 | 2025 MN EDI Minnesota Regional Championship venue |
| 200 Butterfly | SCY | 3:35.14 | +46.95s to B·+82.05s to Sectionals | 2024-01-06 | 2024 MN FOXJ January Bronze venue |
| 100 Individual Medley | SCY | 1:17.36 | 2025-03-08 | 2025 MN EDI Minnesota Regional Championship venue | |
| 200 Individual Medley | SCY | 2:55.47 | +6.58s to B·+42.48s to Sectionals | 2025-03-01 | 2025 MN FOXJ March Bronze venue |
| 50 Freestyle | LCM | 38.86 | +2.07s to B·+10.07s to Sectionals | 2025-06-14 | 2025 MN RSC Summerfest venue |
| 100 Freestyle | LCM | 1:24.73 | +5.24s to B·+22.94s to Sectionals | 2025-06-14 | 2025 MN RSC Summerfest venue |
| 200 Freestyle | LCM | 3:18.36 | +25.87s to B·+65.27s to Sectionals | 2024-06-22 | 2024 MN MAN Red White & Blue Invitational venue |
| 50 Backstroke | LCM | 40.81 | B+1.52s to BB·+9.32s to Sectionals | 2025-07-10 | 2025 IA BLST Summer Sizzler |
| 100 Backstroke | LCM | 1:23.19 | B+1.20s to BB·+12.70s to Sectionals | 2025-07-19 | 2025 MN STRM Minnesota Regional Championship venue |
| 200 Backstroke | LCM | 3:01.03 | B+4.64s to BB·+29.64s to Sectionals | 2025-07-20 | 2025 MN STRM Minnesota Regional Championship venue |
| 50 Breaststroke | LCM | 47.28 | +0.19s to B·+11.69s to Sectionals | 2025-07-10 | 2025 IA BLST Summer Sizzler |
| 100 Breaststroke | LCM | 1:44.73 | +4.54s to B·+24.74s to Sectionals | 2025-07-18 | 2025 MN STRM Minnesota Regional Championship |
| 200 Breaststroke | LCM | 3:45.77 | +8.98s to B·+52.98s to Sectionals | 2025-06-13 | 2025 MN RSC Summerfest venue |
| 50 Butterfly | LCM | 40.54 | +0.75s to B·+10.25s to Sectionals | 2025-07-10 | 2025 IA BLST Summer Sizzler |
| 100 Butterfly | LCM | 1:42.23 | +16.44s to B·+34.14s to Sectionals | 2024-05-18 | 2024 MN HURR LCM Spring Opener |
| 200 Individual Medley | LCM | 3:27.86 | +13.37s to B·+56.57s to Sectionals | 2025-06-14 | 2025 MN RSC Summerfest venue |
| 400 Individual Medley | LCM | 7:25.04 | +31.05s to B·+120.65s to Sectionals | 2025-06-15 | 2025 MN RSC Summerfest venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 15-16 · SCY
1692 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 7:32.09 | 294 |
| 200 BK SCY | 2:42.19 | 422 |
| 200 BR SCY | 3:05.30 | 426 |
| 200 FL SCY | 3:35.14 | 193 |
| 200 IM SCY | 2:55.47 | 357 |
| 400 IM SCY | — | 0 |
IMR 15-16 · SCY
1882 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:45.81 | 306 |
| 100 BK SCY | 1:12.71 | 459 |
| 100 BR SCY | 1:26.54 | 413 |
| 100 FL SCY | 1:19.36 | 347 |
| 200 IM SCY | 2:55.47 | 357 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:11.18
Front half 33.49s · back half 37.69s
200 Freestyle SCY 2:45.81
Front half 80.60s · back half 85.21s
500 Freestyle SCY 7:32.09
Front half 227.93s · back half 224.16s
100 Backstroke SCY 1:12.71
Front half 35.91s · back half 36.80s
200 Backstroke SCY 2:42.19
Front half 80.78s · back half 81.41s
100 Butterfly SCY 1:19.36
Front half 36.66s · back half 42.70s
200 Butterfly SCY 3:35.14
Front half 95.23s · back half 119.91s
100 Individual Medley SCY 1:17.36
Front half 34.46s · back half 42.90s
200 Individual Medley SCY 2:55.47
Front half 81.65s · back half 93.82s
100 Freestyle LCM 1:24.73
Front half 39.14s · back half 45.59s
200 Freestyle LCM 3:18.36
Front half 95.91s · back half 102.45s
100 Backstroke LCM 1:23.19
Front half 40.49s · back half 42.70s
200 Backstroke LCM 3:01.03
Front half 87.93s · back half 93.10s
100 Breaststroke LCM 1:44.73 split/total mismatch
Front half 49.41s · back half 55.32s
200 Breaststroke LCM 3:45.77
Front half 108.99s · back half 116.78s
100 Butterfly LCM 1:42.23 split/total mismatch
Front half 45.80s · back half 56.43s
200 Individual Medley LCM 3:27.86
Front half 98.80s · back half 109.06s
400 Individual Medley LCM 7:25.04
Front half 217.99s · back half 227.05s
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.