swimHelen Dai
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.01 | A+0.12s to AA·+0.92s to Sectionals | 2025-12-04 | RAFC Winter Classic |
| 100 Freestyle | SCY | 51.47 | AAAA·Futures ✓+1.08s to Winter JNs | 2025-12-04 | RAFC Winter Classic |
| 200 Freestyle | SCY | 2:18.77 | BB+6.88s to A·+16.38s to Sectionals | 2024-02-03 | 2024 FAST February Invitevenue |
| 500 Freestyle | SCY | 6:03.16 | BB+9.77s to A·+33.77s to Sectionals | 2024-02-04 | 2024 FAST February Invitevenue |
| 50 Backstroke | SCY | 29.90 | AA+1.21s to AAA·+3.61s to Futures | 2025-12-05 | RAFC Winter Classicvenue |
| 100 Backstroke | SCY | 1:05.27 | A+1.88s to AA·+3.88s to Sectionals | 2025-12-06 | RAFC Winter Classicvenue |
| 200 Backstroke | SCY | 2:34.53 | BB+10.64s to A·+21.24s to Sectionals | 2025-03-09 | 2025 Florida Swimming FLAGS NORTHvenue |
| 50 Breaststroke | SCY | 33.01 | AAA+1.42s to AAAA·+3.22s to Futures | 2025-12-07 | RAFC Winter Classicvenue |
| 100 Breaststroke | SCY | 1:13.95 | A+1.06s to AA·+3.36s to Sectionals | 2025-12-04 | RAFC Winter Classic |
| 200 Breaststroke | SCY | 2:41.42 | A+4.53s to AA·+8.63s to Sectionals | 2025-12-06 | RAFC Winter Classicvenue |
| 50 Butterfly | SCY | 29.38 | AA+1.09s to AAA·+3.69s to Futures | 2025-12-04 | RAFC Winter Classic |
| 100 Individual Medley | SCY | 1:06.78 | 2025-03-07 | 2025 Florida Swimming FLAGS NORTHvenue | |
| 200 Individual Medley | SCY | 2:22.84 | A+1.15s to AA·+6.35s to Sectionals | 2025-09-27 | 61st Woodson Invitationalvenue |
| 50 Freestyle | LCM | 30.70 | A+0.01s to AA·+1.11s to Sectionals | 2026-06-27 | 2026 FAST Independence Invitationalvenue |
| 100 Freestyle | LCM | 1:05.18 | AA+1.39s to AAA·+0.79s to Sectionals | 2026-07-09 | 2026 FL Summer Age Group Championshipsvenue |
| 200 Freestyle | LCM | 2:31.74 | BB+1.35s to A·+12.75s to Sectionals | 2026-04-12 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - cvenue |
| 400 Freestyle | LCM | 5:20.42 | BB+4.23s to A·+28.63s to Sectionals | 2024-07-26 | 2024 RAFC Last Splash Invitationalvenue |
| 50 Backstroke | LCM | 35.38 | A+0.29s to AA·+4.49s to Futures | 2025-07-25 | 2025 RAFC Last Splash Invitationalvenue |
| 100 Backstroke | LCM | 1:17.74 | BB+0.65s to A·+6.35s to Sectionals | 2025-07-24 | 2025 RAFC Last Splash Invitationalvenue |
| 50 Breaststroke | LCM | 38.62 | AA+1.03s to AAA·+3.83s to Futures | 2026-05-17 | 2026 PA Long Course Invitevenue |
| 100 Breaststroke | LCM | 1:26.78 | A+2.59s to AA·+5.79s to Sectionals | 2026-05-16 | 2026 PA Long Course Invitevenue |
| 200 Breaststroke | LCM | 3:07.05 | A+5.66s to AA·+12.19s to Sectionals | 2025-07-25 | 2025 RAFC Last Splash Invitationalvenue |
| 50 Butterfly | LCM | 34.31 | BB+0.02s to A·+4.82s to Futures | 2025-05-17 | 2025 PA Long Course Invitevenue |
| 200 Individual Medley | LCM | 2:42.16 | A+0.07s to AA·+5.17s to Sectionals | 2025-07-19 | 2025 Florida Summer Senior Championshipsvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 14.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.43 | flat | 200 Free Relay | 2025-03-06 | 2025 Florida Swimming FLAGS NORTH |
| 50 Freestyle | SCY | 25.37 | flying | 200 Free Relay (leg 3) | 2024-11-16 | 2024 Patriot Aquatics Winter Invite |
| 50 Backstroke | SCY | 31.30 | flat | 200 Medley Relay | 2025-03-08 | 2025 Florida Swimming FLAGS NORTH |
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 13-14 · SCY
2574 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:03.16 | 617 |
| 200 BK SCY | 2:34.53 | 526 |
| 200 BR SCY | 2:41.42 | 699 |
| 200 IM SCY | 2:22.84 | 732 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 13-14 · LCM
2748 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:31.74 | 650 |
| 100 BK LCM | 1:17.74 | 648 |
| 100 BR LCM | 1:26.78 | 692 |
| 200 IM LCM | 2:42.16 | 758 |
| 100 FL LCM | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:18.77 RT 0.78s
Front half 66.47s · back half 72.30s
500 Freestyle SCY 6:03.16 RT 0.78s
Front half 177.49s · back half 185.67s
100 Backstroke SCY 1:05.27 RT 0.76s
Front half 31.86s · back half 33.41s
200 Backstroke SCY 2:34.53 RT 0.65s
Front half 72.69s · back half 81.84s
100 Breaststroke SCY 1:13.95 split/total mismatch
Front half 29.13s · back half 44.82s
200 Breaststroke SCY 2:41.42
Front half 77.09s · back half 84.33s
100 Individual Medley SCY 1:06.78 RT 0.74s
Front half 31.23s · back half 35.55s
200 Individual Medley SCY 2:22.84
Front half 66.68s · back half 76.16s
100 Freestyle LCM 1:05.18
Front half 31.48s · back half 33.70s
200 Freestyle LCM 2:31.74
Front half 74.51s · back half 77.23s
400 Freestyle LCM 5:20.42
Front half 158.11s · back half 162.31s
100 Backstroke LCM 1:17.74 RT 0.80s
Front half 38.39s · back half 39.35s
100 Breaststroke LCM 1:26.78
Front half 40.39s · back half 46.39s
200 Breaststroke LCM 3:07.05
Front half 89.79s · back half 97.26s
200 Individual Medley LCM 2:42.16 RT 0.78s
Front half 77.06s · back half 85.10s
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.
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.