swimJustine O'Brien
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 30.52 | BB+1.13s to A·+5.23s to Sectionals | 2025-01-24 | 2025 CIA Winter Blues Buster |
| 100 Freestyle | SCY | 1:07.52 | BB+3.43s to A·+13.03s to Sectionals | 2024-10-11 | 2024 IA ACAC Timothy Jenks Memorial - Autumn Opener venue |
| 500 Freestyle | SCY | 6:40.85 | BB+25.96s to A·+85.86s to Sectionals | 2024-10-26 | 2024 CIA and Johnston Blaze Fall Mixer |
| 1000 Freestyle | SCY | 13:03.78 | BB+9.99s to A·+135.39s to Sectionals | 2025-01-24 | 2025 CIA Winter Blues Buster |
| 25 Backstroke | SCY | 28.87 | 2024-10-26 | 2024 CIA and Johnston Blaze Fall Mixer | |
| 50 Backstroke | SCY | 30.29 | AAA+1.20s to AAAA·+3.00s to Sectionals | 2026-02-20 | 2026 IA IASI Age Group Championships |
| 100 Backstroke | SCY | 1:06.45 | AA+0.26s to AAA·+5.96s to Sectionals | 2026-02-20 | 2026 IA IASI Age Group Championships |
| 200 Backstroke | SCY | 2:24.70 | AA+3.21s to AAA·+13.21s to Sectionals | 2026-02-20 | 2026 IA IASI Age Group Championships |
| 50 Breaststroke | SCY | 48.98 | +4.99s to B·+18.29s to Sectionals | 2024-10-11 | 2024 IA ACAC Timothy Jenks Memorial - Autumn Opener venue |
| 100 Breaststroke | SCY | 1:30.30 | B+0.91s to BB·+20.81s to Sectionals | 2025-01-24 | 2025 CIA Winter Blues Buster |
| 50 Butterfly | SCY | 32.61 | BB+0.92s to A·+5.92s to Sectionals | 2025-02-21 | 2025 IASI Age Group Championships |
| 100 Butterfly | SCY | 1:17.45 | BB+5.16s to A·+17.86s to Sectionals | 2025-02-21 | 2025 IASI Age Group Championships |
| 100 Individual Medley | SCY | 1:19.71 | B+0.52s to BB | 2024-01-01 | 1554971 |
| 200 Individual Medley | SCY | 2:43.95 | BB+6.26s to A·+30.96s to Sectionals | 2025-02-21 | 2025 IASI Age Group Championships |
| 400 Individual Medley | SCY | 5:42.21 | BB+5.92s to A·+58.22s to Sectionals | 2025-01-24 | 2025 CIA Winter Blues Buster |
| 50 Freestyle | LCM | 33.55 | BB+0.16s to A·+4.76s to Sectionals | 2025-01-01 | 1607071 |
| 100 Freestyle | LCM | 1:25.84 | +0.15s to B·+24.05s to Sectionals | 2024-05-12 | 2024 IA DSMY May LCM Invitational slow pool |
| 200 Freestyle | LCM | 3:11.64 | +4.85s to B·+58.55s to Sectionals | 2024-05-10 | 2024 IA DSMY May LCM Invitational |
| 400 Freestyle | LCM | 6:26.20 | B+21.41s to BB·+103.81s to Sectionals | 2024-05-11 | 2024 IA DSMY May LCM Invitational slow pool |
| 50 Backstroke | LCM | 46.46 | +1.57s to B·+14.97s to Sectionals | 2024-05-11 | 2024 IA DSMY May LCM Invitational slow pool |
| 100 Backstroke | LCM | 1:19.73 | AA+2.84s to AAA·+9.24s to Sectionals | 2025-01-01 | 1607071 |
| 200 Backstroke | LCM | 2:50.25 | AA+6.66s to AAA·+18.86s to Sectionals | 2025-01-01 | 1607071 |
| 50 Breaststroke | LCM | 54.82 | +5.03s to B·+19.23s to Sectionals | 2024-05-10 | 2024 IA DSMY May LCM Invitational |
| 100 Breaststroke | LCM | 1:59.52 | +9.13s to B·+39.53s to Sectionals | 2024-05-11 | 2024 IA DSMY May LCM Invitational slow pool |
| 50 Butterfly | LCM | 35.30 | A+1.01s to AA·+5.01s to Sectionals | 2025-01-01 | 1607071 |
| 100 Butterfly | LCM | 1:23.72 | BB+1.03s to A·+15.63s to Sectionals | 2025-01-01 | 1607071 |
| 200 Individual Medley | LCM | 3:34.86 | +4.07s to B·+63.57s to Sectionals | 2024-05-10 | 2024 IA DSMY May LCM Invitational slow pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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.
IMX / IMR
IMX 11-12 · SCY
2982 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:40.85 | 546 |
| 100 BK SCY | 1:06.45 | 839 |
| 100 BR SCY | 1:30.30 | 496 |
| 100 FL SCY | 1:17.45 | 507 |
| 200 IM SCY | 2:43.95 | 594 |
IMR 11-12 · SCY
2316 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 50 BK SCY | 30.29 | 885 |
| 50 BR SCY | 48.98 | 305 |
| 50 FL SCY | 32.61 | 612 |
| 100 IM SCY | 1:19.71 | 514 |
| 200 FR SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Backstroke SCY 1:06.45 split/total mismatch
200 Backstroke SCY 2:24.70 split/total mismatch
100 Butterfly SCY 1:17.45 split/total mismatch
Front half 35.27s · back half 42.18s
100 Individual Medley SCY 1:19.71
Front half 34.95s · back half 44.76s
200 Individual Medley SCY 2:43.95 split/total mismatch
100 Freestyle LCM 1:25.84
Front half 41.64s · back half 44.20s
200 Freestyle LCM 3:11.64 split/total mismatch
Front half 43.01s · back half 148.63s
400 Freestyle LCM 6:26.20
Front half 189.05s · back half 197.15s
100 Backstroke LCM 1:19.73 split/total mismatch
Front half 37.04s · back half 42.69s
200 Backstroke LCM 2:50.25 split/total mismatch
100 Breaststroke LCM 1:59.52
Front half 57.61s · back half 61.91s
100 Butterfly LCM 1:23.72 split/total mismatch
Front half 37.69s · back half 46.03s
200 Individual Medley LCM 3:34.86
Front half 99.45s · back half 115.41s
Progression
Faster times are higher. One card per event, all courses & history.