swimEthan Zhu
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 32.55 | BB+2.46s to A | 2026-03-05 | 2026 Florida Swimming FLAGS NORTH |
| 100 Freestyle | SCY | 52.30 | AAAA | 2024-10-19 | 2024 SLAC IMX Challenge Invitational |
| 200 Freestyle | SCY | 2:42.28 | B+7.59s to BB | 2026-01-10 | 2026 FAST Polar Plunge venue |
| 50 Backstroke | SCY | 40.31 | B+2.22s to BB | 2026-02-21 | 2026 SLAC Last Chance to Dance Invitational fast pool |
| 100 Backstroke | SCY | 1:22.53 | BB+6.94s to A | 2025-12-07 | 2025 Speedo Gator Holiday Classic fast pool |
| 50 Breaststroke | SCY | 47.30 | +0.41s to B | 2025-10-18 | 2025 SLAC IMX Challenge Invitational venue |
| 100 Breaststroke | SCY | 1:46.36 | +6.07s to B | 2025-03-02 | 2025 Spring Area 2 Championships venue |
| 50 Butterfly | SCY | 40.44 | +0.35s to B | 2026-02-21 | 2026 SLAC Last Chance to Dance Invitational fast pool |
| 100 Individual Medley | SCY | 1:27.20 | B+5.51s to BB | 2026-02-22 | 2026 SLAC Last Chance to Dance Invitational fast pool |
| 50 Freestyle | LCM | 38.48 | B+1.39s to BB | 2026-04-12 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
| 100 Freestyle | LCM | 1:20.98 | BB+5.69s to A | 2026-04-11 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c venue |
| 200 Freestyle | LCM | 3:01.12 | B+4.93s to BB | 2026-06-12 | 2026 RAFC Summer Solstice Invitational venue |
| 50 Backstroke | LCM | 45.90 | B+1.91s to BB | 2026-06-12 | 2026 RAFC Summer Solstice Invitational venue |
| 100 Backstroke | LCM | 1:38.53 | B+2.04s to BB | 2026-06-13 | 2026 RAFC Summer Solstice Invitational venue |
| 50 Breaststroke | LCM | 48.56 | BB+3.57s to A | 2026-04-11 | 2026 Ron Nardozzi Pre-Derby Sprint Invite - c |
| 100 Breaststroke | LCM | 2:02.93 | +5.74s to B | 2025-04-27 | 2025 Ron Nardozzi Pre-Derby Sprint Invite venue |
| 50 Butterfly | LCM | 47.89 | +2.60s to B | 2026-06-12 | 2026 RAFC Summer Solstice Invitational venue |
| 100 Butterfly | LCM | 1:15.39 | AAA+1.70s to AAAA | 2026-06-11 | 2026 RAFC Summer Solstice Invitational |
| 200 Individual Medley | LCM | 3:31.89 | B+7.80s to BB | 2026-06-14 | 2026 RAFC Summer Solstice Invitational venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 11.
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.
IMX / IMR
IMX 11-12 · LCM
1714 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 100 BK LCM | 1:38.53 | 364 |
| 100 BR LCM | 2:02.93 | 265 |
| 100 FL LCM | 1:15.39 | 727 |
| 200 IM LCM | 3:31.89 | 358 |
| 400 FR LCM | — | 0 |
IMR 11-12 · LCM
1786 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 3:01.12 | 408 |
| 50 BK LCM | 45.90 | 357 |
| 50 BR LCM | 48.56 | 410 |
| 50 FL LCM | 47.89 | 253 |
| 200 IM LCM | 3:31.89 | 358 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:42.28
Front half 78.07s · back half 84.21s
100 Backstroke SCY 1:22.53
Front half 40.82s · back half 41.71s
100 Breaststroke SCY 1:46.36
Front half 51.11s · back half 55.25s
100 Individual Medley SCY 1:27.20
Front half 41.77s · back half 45.43s
200 Freestyle LCM 3:01.12
Front half 86.89s · back half 94.23s
200 Individual Medley LCM 3:31.89
Front half 100.80s · back half 111.09s
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.