swimSebastian Hartline
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.53 | BB+0.34s to A·+8.34s to Sectionals | 2026-03-20 | 2026 NW Region Age Group Champs- Approvedvenue |
| 100 Freestyle | SCY | 1:13.13 | BB+2.94s to A·+22.14s to Sectionals | 2026-01-24 | 2026 TTSC Winter Qualifiervenue |
| 200 Freestyle | SCY | 2:41.59 | BB+9.90s to A·+49.80s to Sectionals | 2026-01-24 | 2026 TTSC Winter Qualifiervenue |
| 500 Freestyle | SCY | 7:06.45 | BB+22.86s to A·+123.76s to Sectionals | 2025-12-19 | 2025 MAC Red & White Meetvenue |
| 50 Backstroke | SCY | 41.19 | BB+3.40s to A·+17.50s to Futures | 2025-10-18 | 2025 THSC Fall Openvenue |
| 100 Backstroke | SCY | 1:25.91 | BB+6.02s to A·+30.42s to Sectionals | 2026-02-22 | 2026 Arena Short Course 10&U Championshipsvenue |
| 50 Breaststroke | SCY | 44.40 | BB+2.31s to A·+18.11s to Futures | 2025-10-19 | 2025 THSC Fall Openvenue |
| 100 Breaststroke | SCY | 1:39.47 | BB+7.78s to A·+36.28s to Sectionals | 2025-12-05 | 2025 Tualatin Hills Holiday Classicvenue |
| 25 Butterfly | SCY | 19.49 | 2025-12-19 | 2025 MAC Red & White Meetvenue | |
| 50 Butterfly | SCY | 35.23 | A+0.94s to AA·+12.34s to Futures | 2026-02-22 | 2026 Arena Short Course 10&U Championshipsvenue |
| 100 Butterfly | SCY | 1:21.94 | A+2.15s to AA·+26.75s to Sectionals | 2026-02-21 | 2026 Arena Short Course 10&U Championshipsvenue |
| 100 Individual Medley | SCY | 1:22.14 | BB+2.25s to A | 2026-03-19 | 2026 Northwest Region Age Group Championships |
| 200 Individual Medley | SCY | 3:12.08 | BB+18.59s to A·+68.09s to Sectionals | 2025-12-07 | 2025 Tualatin Hills Holiday Classicvenue |
| 50 Freestyle | LCM | 36.67 | BB+0.98s to A·+9.68s to Sectionals | 2026-06-27 | 2026 TEAM Summer Invitationalvenue |
| 100 Freestyle | LCM | 1:21.02 | BB+0.83s to A·+22.03s to Sectionals | 2026-04-19 | 2026 MAC LONG-COURSE INVITATIONALvenue |
| 200 Freestyle | LCM | 2:56.64 | BB+2.95s to A·+47.95s to Sectionals | 2026-07-11 | 2026 OSI Arena Summer LC 12&U Championships -fast pool |
| 50 Backstroke | LCM | 44.45 | BB+1.36s to A·+16.56s to Futures | 2026-04-19 | 2026 MAC LONG-COURSE INVITATIONALvenue |
| 100 Backstroke | LCM | 1:38.44 | BB+6.15s to A·+33.25s to Sectionals | 2026-07-11 | 2026 OSI Arena Summer LC 12&U Championships -fast pool |
| 50 Breaststroke | LCM | 50.33 | BB+2.44s to A·+19.44s to Futures | 2026-07-12 | 2026 OSI Arena Summer LC 12&U Championships -fast pool |
| 100 Breaststroke | LCM | 1:52.70 | BB+7.11s to A·+39.00s to Sectionals | 2026-06-26 | 2026 TEAM Summer Invitationalvenue |
| 50 Butterfly | LCM | 40.56 | A+1.97s to AA·+14.27s to Futures | 2026-07-11 | 2026 OSI Arena Summer LC 12&U Championships -fast pool |
| 100 Butterfly | LCM | 1:33.72 | A+3.03s to AA·+30.63s to Sectionals | 2026-07-12 | 2026 OSI Arena Summer LC 12&U Championships -fast pool |
| 200 Individual Medley | LCM | 3:23.80 | BB+5.51s to A·+59.11s to Sectionals | 2026-05-24 | 2026 THSC Memorial Weekend Meetvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.
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 | 32.96 | flying | 200 Medley Relay (leg 4) | 2026-02-21 | 2026 Arena Short Course 10&U Championships |
| 50 Freestyle | SCY | 30.79 | flying | 200 Free Relay (leg 4) | 2025-11-09 | 2025 McSwimville Invitational |
| 50 Butterfly | SCY | 40.87 | flying | 200 Medley Relay (leg 3) | 2026-01-24 | 2026 TTSC Winter Qualifier |
| 50 Freestyle | LCM | 42.14 | flying | 200 Free Relay (leg 2) | 2025-06-27 | 2025 Howard Jones Open |
| 50 Freestyle | LCM | 42.15 | flying | 200 Medley Relay (leg 4) | 2025-06-29 | 2025 Howard Jones Open |
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 10 & under · LCM
2922 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:56.64 | 633 |
| 100 BK LCM | 1:38.44 | 536 |
| 100 BR LCM | 1:52.70 | 538 |
| 100 FL LCM | 1:33.72 | 612 |
| 200 IM LCM | 3:23.80 | 603 |
IMR 10 & under · LCM
3003 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 100 FR LCM | 1:21.02 | 639 |
| 50 BK LCM | 44.45 | 576 |
| 50 BR LCM | 50.33 | 560 |
| 50 FL LCM | 40.56 | 625 |
| 200 IM LCM | 3:23.80 | 603 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:13.13
Front half 35.53s · back half 37.60s
200 Freestyle SCY 2:41.59
Front half 79.95s · back half 81.64s
500 Freestyle SCY 7:06.45
Front half 214.70s · back half 211.75s
100 Backstroke SCY 1:25.91
Front half 42.43s · back half 43.48s
100 Breaststroke SCY 1:39.47
Front half 48.16s · back half 51.31s
100 Butterfly SCY 1:21.94
Front half 40.80s · back half 41.14s
200 Individual Medley SCY 3:12.08
Front half 95.88s · back half 96.20s
200 Freestyle LCM 2:56.64
Front half 85.89s · back half 90.75s
100 Backstroke LCM 1:38.44
Front half 47.99s · back half 50.45s
100 Butterfly LCM 1:33.72
Front half 44.67s · back half 49.05s
200 Individual Medley LCM 3:23.80
Front half 99.15s · back half 104.65s
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.