Katherine O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.61 | +2.72s to B·+9.32s to Sectionals | 2020-12-19 | KYA Santa Splashvenue |
| 100 Freestyle | SCY | 1:09.62 | +6.33s to B·+21.33s to Sectionals | 2021-01-31 | Paducah Swim Team Swimfestvenue |
| 200 Freestyle | SCY | 2:36.43 | +18.14s to B·+50.64s to Sectionals | 2021-01-30 | Paducah Swim Team Swimfestvenue |
| 50 Backstroke | SCY | 34.58 | +1.89s to B·+8.89s to Sectionals | 2021-03-07 | LEXD Race to State 2021venue |
| 100 Backstroke | SCY | 56.00 | AA+1.41s to AAA·+0.91s to Sectionals | 2025-01-01 | 2025 13 & OVER Kentucky State SCY Championship |
| 200 Backstroke | SCY | 1:58.51 | AAA+4.62s to AAAA·Sectionals ✓+5.72s to Futures | 2025-01-01 | 2025 13 & OVER Kentucky State SCY Championship |
| 50 Breaststroke | SCY | 44.93 | +7.44s to B·+15.44s to Sectionals | 2021-01-30 | Paducah Swim Team Swimfestvenue |
| 100 Breaststroke | SCY | 1:40.81 | +22.22s to B·+38.12s to Sectionals | 2021-02-20 | KYA - Lakeside Dual Meet 2021venue |
| 200 Breaststroke | SCY | 2:43.21 | B+4.02s to BB·+23.92s to Sectionals | 2025-01-01 | 2025 13 & OVER Kentucky State SCY Championship |
| 50 Butterfly | SCY | 35.50 | +3.11s to B·+11.21s to Sectionals | 2020-11-08 | TRI-Meet Cardinal vs. KY Aquatics vs. Tritonvenue |
| 100 Individual Medley | SCY | 1:21.10 | 2021-02-21 | KYA - Lakeside Dual Meet 2021venue | |
| 200 Individual Medley | SCY | 2:56.43 | +22.24s to B·+57.04s to Sectionals | 2021-01-31 | Paducah Swim Team Swimfestvenue |
| 50 Freestyle | LCM | 29.31 | BB+0.72s to A·+3.72s to Sectionals | 2025-07-17 | 25 Kentucky Swimming Long Course Championship |
| 100 Freestyle | LCM | 1:13.14 | +0.45s to B·+17.85s to Sectionals | 2022-05-15 | Kentucky Aquatics Derby Classic Meet 2022venue |
| 200 Freestyle | LCM | 2:41.00 | +1.01s to B·+40.11s to Sectionals | 2022-05-14 | Kentucky Aquatics Derby Classic Meet 2022venue |
| 400 Freestyle | LCM | 5:30.43 | B+14.04s to BB·+71.34s to Sectionals | 2022-07-15 | 2022 KY 12 & U LCM State Championshipvenue |
| 50 Backstroke | LCM | 36.80 | B+0.91s to BB·+6.61s to Sectionals | 2022-07-16 | 2022 KY 12 & U LCM State Championshipvenue |
| 100 Backstroke | LCM | 1:19.04 | B+3.65s to BB·+14.55s to Sectionals | 2022-07-17 | 2022 KY 12 & U LCM State Championshipvenue |
| 50 Butterfly | LCM | 35.68 | B+1.79s to BB·+7.89s to Sectionals | 2022-07-17 | 2022 KY 12 & U LCM State Championshipvenue |
| 100 Butterfly | LCM | 1:25.77 | +7.18s to B·+25.28s to Sectionals | 2022-05-15 | Kentucky Aquatics Derby Classic Meet 2022venue |
| 200 Individual Medley | LCM | 3:01.52 | +2.73s to B·+43.83s to Sectionals | 2022-05-14 | Kentucky Aquatics Derby Classic Meet 2022venue |
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | LCM | 30.18 | flying | 200 Free Relay (leg 2) | 2022-07-16 | 2022 KY 12 & U LCM State Championship |
| 50 Backstroke | LCM | 37.53 | flat | 200 Medley Relay | 2022-07-17 | 2022 KY 12 & U LCM State Championship |
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 15-16 · SCY
1530 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 BK SCY | 1:58.51 | 814 |
| 200 BR SCY | 2:43.21 | 452 |
| 200 IM SCY | 2:56.43 | 264 |
| 500 FR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 15-16 · LCM
1501 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:41.00 | 388 |
| 100 BK LCM | 1:19.04 | 426 |
| 100 FL LCM | 1:25.77 | 302 |
| 200 IM LCM | 3:01.52 | 385 |
| 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 1:09.62
Front half 32.91s · back half 36.71s
200 Freestyle SCY 2:36.43
Front half 76.85s · back half 79.58s
100 Breaststroke SCY 1:40.81
Front half 49.52s · back half 51.29s
100 Individual Medley SCY 1:21.10
Front half 35.49s · back half 45.61s
200 Individual Medley SCY 2:56.43
Front half 81.94s · back half 94.49s
100 Freestyle LCM 1:13.14
Front half 34.66s · back half 38.48s
200 Freestyle LCM 2:41.00
Front half 77.91s · back half 83.09s
400 Freestyle LCM 5:30.43
Front half 162.65s · back half 167.78s
100 Backstroke LCM 1:19.04
Front half 38.47s · back half 40.57s
100 Butterfly LCM 1:25.77
Front half 39.33s · back half 46.44s
200 Individual Medley LCM 3:01.52
Front half 83.13s · back half 98.39s
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.