swimEthan Guo
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 20.40 | Sectionals ✓+0.01s to Futures | 2026-08-07 | 2026 NE LA August SCY Invitationalfast pool |
| 100 Freestyle | SCY | 44.12 | Futures ✓+1.03s to US Open | 2024-12-21 | 2024 NE CS SCY New England Senior Meetvenue |
| 200 Freestyle | SCY | 1:36.14 | Futures ✓+1.15s to US Open | 2025-03-28 | 2025 EZ North Speedo Short Course Sectionalsvenue |
| 500 Freestyle | SCY | 4:32.82 | Sectionals ✓+7.23s to Futures | 2024-03-23 | 2024 EZ North Region Speedo Sectional Champsvenue |
| 1000 Freestyle | SCY | 10:30.09 | +30.60s to Sectionals | 2026-01-01 | nsscnov7diestanceresults |
| 50 Backstroke | SCY | 21.81 | Futures ✓+0.32s to US Open | 2026-08-09 | 2026 NE LA August SCY Invitationalfast pool |
| 100 Backstroke | SCY | 47.64 | Futures ✓+0.65s to US Open | 2024-12-22 | 2024 NE CS SCY New England Senior Meetvenue |
| 200 Backstroke | SCY | 1:47.91 | Sectionals ✓+1.42s to Futures | 2024-03-24 | 2024 EZ North Region Speedo Sectional Champsvenue |
| 100 Breaststroke | SCY | 1:04.42 | +2.93s to Sectionals | 2024-10-20 | 2024 NE NSSC Halloween Classicvenue |
| 200 Breaststroke | SCY | 2:16.76 | +1.77s to Sectionals | 2024-10-20 | 2024 NE NSSC Halloween Classicvenue |
| 50 Butterfly | SCY | 21.40 | Futures ✓+0.21s to US Open | 2026-08-08 | 2026 NE LA August SCY Invitationalfast pool |
| 100 Butterfly | SCY | 47.81 | Futures ✓+1.12s to US Open | 2024-12-20 | 2024 NE CS SCY New England Senior Meetvenue |
| 200 Butterfly | SCY | 2:09.08 | +7.89s to Sectionals | 2026-01-01 | cra mar invite results |
| 100 Individual Medley | SCY | 52.37 | 2024-08-01 | 2024 NE CRA August End of Season Invite | |
| 200 Individual Medley | SCY | 1:56.41 | Sectionals ✓+7.92s to Futures | 2023-08-04 | 2023 NE CRA August End of Season Invite |
| 50 Freestyle | LCM | 25.22 | Sectionals ✓+1.43s to Futures | 2024-07-11 | 2024 NE BGSC LCM Senior Championshipsvenue |
| 100 Freestyle | LCM | 52.17 | Sectionals ✓+0.18s to Futures | 2025-07-31 | 2025 Speedo Junior National Championshipsvenue |
| 200 Freestyle | LCM | 1:55.19 | Sectionals ✓+1.10s to Futures | 2025-01-01 | 2025 NE Swimming LC Senior Championships - Brown University, S#: NE25-0710CSvenue |
| 400 Freestyle | LCM | 4:12.27 | Sectionals ✓+10.08s to Futures | 2024-07-13 | 2024 NE BGSC LCM Senior Championshipsvenue |
| 800 Freestyle | LCM | 10:17.36 | +78.97s to Sectionals | 2019-04-26 | CT SAQ April Distance Meetvenue |
| 50 Backstroke | LCM | 26.75 | +0.06s to Futures | 2026-07-29 | 2026 TYR FUTURES MADISON |
| 100 Backstroke | LCM | 56.97 | Futures ✓+0.08s to US Open | 2026-07-29 | 2026 TYR FUTURES MADISON |
| 200 Backstroke | LCM | 2:07.69 | Sectionals ✓+0.70s to Futures | 2026-07-29 | 2026 TYR FUTURES MADISON |
| 50 Butterfly | LCM | 26.29 | +0.90s to Futures | 2025-01-01 | 2025 NE Swimming LC Senior Championships - Brown University, S#: NE25-0710CSvenue |
| 100 Butterfly | LCM | 56.63 | Sectionals ✓+0.74s to Futures | 2025-08-01 | 2025 Speedo Junior National Championshipsvenue |
| 200 Individual Medley | LCM | 2:25.93 | +9.74s to Sectionals | 2026-01-01 | may 20 21 springfield meet results |
| 400 Individual Medley | LCM | 5:36.39 | +46.50s to Sectionals | 2019-06-28 | 2019 WHAT June Invitational |
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 | 21.47 | flat | 200 Free Relay | 2024-03-08 | 2024 NE CRIM 15-19 AG Championships |
| 50 Freestyle | SCY | 20.79 | flying | 200 Medley Relay (leg 4) | 2024-03-07 | 2024 NE CRIM 15-19 AG Championships |
| 50 Freestyle | SCY | 20.16 | flying | 200 Free Relay (leg 2) | 2025-03-30 | 2025 EZ North Speedo Short Course Sectionals |
| 100 Freestyle | SCY | 44.53 | flat | 400 Free Relay | 2025-03-29 | 2025 EZ North Speedo Short Course Sectionals |
| 100 Freestyle | SCY | 44.29 | flying | 400 Medley Relay (leg 4) | 2024-12-22 | 2024 NE CS SCY New England Senior Meet |
| 100 Freestyle | SCY | 44.39 | flying | 400 Free Relay (leg 3) | 2024-12-20 | 2024 NE CS SCY New England Senior Meet |
| 200 Freestyle | SCY | 1:38.33 | flat | 800 Free Relay | 2025-03-28 | 2025 EZ North Speedo Short Course Sectionals |
| 50 Backstroke | SCY | 22.35 | flat | 200 Medley Relay | 2025-03-29 | 2025 EZ North Speedo Short Course Sectionals |
| 100 Backstroke | SCY | 48.33 | flat | 400 Medley Relay | 2025-03-30 | 2025 EZ North Speedo Short Course Sectionals |
| 50 Breaststroke | SCY | 28.59 | flying | 200 Medley Relay (leg 2) | 2024-03-23 | 2024 EZ North Region Speedo Sectional Champs |
| 100 Breaststroke | SCY | 1:02.75 | flying | 400 Medley Relay (leg 2) | 2024-03-10 | 2024 NE CRIM 15-19 AG Championships |
| 50 Freestyle | LCM | 23.73 | flying | 200 Free Relay (leg 3) | 2025-07-30 | 2025 Speedo Junior National Championships |
| 50 Freestyle | LCM | 23.27 | flying | 200 Medley Relay (leg 4) | 2025-08-01 | 2025 Speedo Junior National Championships |
| 100 Freestyle | LCM | 52.40 | flat | 400 Free Relay | 2025-07-12 | 2025 NE CS LCM Senior Championships |
| 100 Freestyle | LCM | 53.41 | flying | 400 Free Relay (leg 2) | 2024-07-13 | 2024 NE BGSC LCM Senior Championships |
| 100 Freestyle | LCM | 51.47 | flying | 400 Medley Relay (leg 4) | 2025-08-03 | 2025 Speedo Junior National Championships |
| 200 Freestyle | LCM | 1:55.82 | flat | 800 Free Relay | 2025-07-10 | 2025 NE CS LCM Senior Championships |
| 100 Backstroke | LCM | 59.28 | flat | 400 Medley Relay | 2024-07-12 | 2024 NE BGSC LCM Senior Championships |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Freestyle SCY 44.12
Front half 21.46s · back half 22.66s
200 Freestyle SCY 1:36.14
Front half 46.66s · back half 49.48s
500 Freestyle SCY 4:32.82
Front half 132.98s · back half 139.84s
1000 Freestyle SCY 10:30.09 split/total mismatch
100 Backstroke SCY 47.64
Front half 23.24s · back half 24.40s
200 Backstroke SCY 1:47.91
Front half 52.69s · back half 55.22s
100 Breaststroke SCY 1:04.42
Front half 30.68s · back half 33.74s
200 Breaststroke SCY 2:16.76
Front half 66.69s · back half 70.07s
100 Butterfly SCY 47.81
Front half 22.66s · back half 25.15s
200 Butterfly SCY 2:09.08 split/total mismatch
Front half 33.13s · back half 95.95s
100 Individual Medley SCY 52.37 split/total mismatch
Front half 23.60s · back half 28.77s
200 Individual Medley SCY 1:56.41 split/total mismatch
100 Freestyle LCM 52.17 RT 0.69s
Front half 25.11s · back half 27.06s
200 Freestyle LCM 1:55.19 split/total mismatch
Front half 28.80s · back half 86.39s
400 Freestyle LCM 4:12.27
Front half 123.79s · back half 128.48s
800 Freestyle LCM 10:17.36 split/total mismatch
100 Backstroke LCM 56.97
Front half 26.96s · back half 30.01s
200 Backstroke LCM 2:07.69
Front half 61.44s · back half 66.25s
100 Butterfly LCM 56.63 RT 0.68s
Front half 26.26s · back half 30.37s
200 Individual Medley LCM 2:25.93 split/total mismatch
Front half 70.02s · back half 75.91s
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.