Nathan Castellanos
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 28.28 | AA+0.69s to AAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 100 Freestyle | SCY | 1:02.72 | A+0.23s to AA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 200 Freestyle | SCY | 2:15.86 | AA+4.97s to AAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 500 Freestyle | SCY | 6:18.49 | A+11.90s to AA | 2025-11-14 | MAC 2025 Great Goggled Gobbler Classic Meet |
| 1000 Freestyle | SCY | 12:36.89 | AA+19.30s to AAA | 2025-11-14 | MAC 2025 Great Goggled Gobbler Classic Meet |
| 50 Backstroke | SCY | 34.25 | A+0.86s to AA | 2026-01-09 | MAC 2026 Neon New Year Meet |
| 100 Backstroke | SCY | 1:11.65 | AA+3.06s to AAA | 2025-12-19 | Gulf Fall Championships |
| 200 Backstroke | SCY | 2:30.87 | AA+3.48s to AAA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 50 Breaststroke | SCY | 38.44 | A+0.75s to AA | 2025-12-19 | Gulf Fall Championships |
| 100 Breaststroke | SCY | 1:23.73 | A+2.54s to AA | 2026-01-09 | MAC 2026 Neon New Year Meet |
| 200 Breaststroke | SCY | 2:58.48 | A+2.49s to AA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 50 Butterfly | SCY | 33.63 | A+1.54s to AA | 2025-11-14 | MAC 2025 Great Goggled Gobbler Classic Meet |
| 100 Butterfly | SCY | 1:26.20 | B+3.21s to BB | 2025-10-10 | MAC 2025 Oct Trick or Treat Kick Your Feet |
| 200 Butterfly | SCY | 2:54.20 | BB+9.81s to A | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 100 Individual Medley | SCY | 1:12.16 | A+0.07s to AA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 200 Individual Medley | SCY | 2:38.51 | A+2.02s to AA | 2026-02-20 | 2026 Gulf 12 & Under Championships |
| 50 Freestyle | LCM | 32.55 | AA+1.16s to AAA | 2026-06-26 | 2026 Fleet Last Chance Meet |
| 100 Freestyle | LCM | 1:11.53 | AA+2.54s to AAA | 2026-04-17 | 2026 Aggieland April Long Course Invitational |
| 200 Freestyle | LCM | 2:32.03 | AA+2.94s to AAA | 2026-04-17 | 2026 Aggieland April Long Course Invitational |
| 400 Freestyle | LCM | 5:28.44 | AA+12.75s to AAA | 2026-04-17 | 2026 Aggieland April Long Course Invitational |
| 1500 Freestyle | LCM | 21:16.63 | AAA+43.34s to AAAA | 2026-05-09 | 2026 FLEET Distance Challenge |
| 50 Backstroke | LCM | 37.52 | AA+0.83s to AAA | 2026-04-17 | 2026 Aggieland April Long Course Invitational |
| 100 Backstroke | LCM | 1:21.07 | AA+1.08s to AAA | 2026-06-26 | 2026 Fleet Last Chance Meet |
| 200 Backstroke | LCM | 2:57.28 | AA+6.79s to AAA | 2026-05-15 | 2026 Fleet Summer Classic |
| 50 Breaststroke | LCM | 47.78 | BB+2.79s to A | 2025-07-18 | 2025 Texas Age Group Championships fast pool |
| 100 Breaststroke | LCM | 1:35.56 | A+0.77s to AA | 2026-04-17 | 2026 Aggieland April Long Course Invitational |
| 50 Butterfly | LCM | 36.26 | A+0.07s to AA | 2025-05-16 | 2025 Fleet Summer Classic |
| 100 Butterfly | LCM | 1:41.62 | B+6.63s to BB | 2025-06-27 | 2025 Fleet Last Chance |
| 200 Butterfly | LCM | 3:14.37 | BB+4.68s to A | 2026-06-26 | 2026 Fleet Last Chance Meet |
| 200 Individual Medley | LCM | 2:56.15 | AA+5.26s to AAA | 2026-05-15 | 2026 Fleet Summer Classic |
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 33.23 | flying | 200 Free Relay (leg 4) | 2025-02-22 | MAC Hosted 2025 Gulf 12 & Under Champs |
| 50 Backstroke | SCY | 44.21 | flat | 200 Medley Relay | 2024-01-20 | MAC Neon New Year Open Meet |
| 50 Breaststroke | SCY | 44.76 | flying | 200 Medley Relay (leg 2) | 2024-07-21 | 2024 LSST GULF B & Under Champs |
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 11-12 · LCM
2797 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 5:28.44 | 659 |
| 100 BK LCM | 1:21.07 | 654 |
| 100 BR LCM | 1:35.56 | 564 |
| 100 FL LCM | 1:41.62 | 296 |
| 200 IM LCM | 2:56.15 | 624 |
IMR 11-12 · LCM
2981 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:32.03 | 690 |
| 50 BK LCM | 37.52 | 655 |
| 50 BR LCM | 47.78 | 430 |
| 50 FL LCM | 36.26 | 582 |
| 200 IM LCM | 2:56.15 | 624 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 1:02.72 split/total mismatch
Front half 29.60s · back half 33.12s
200 Freestyle SCY 2:15.86 split/total mismatch
500 Freestyle SCY 6:18.49 split/total mismatch
1000 Freestyle SCY 12:36.89 split/total mismatch
100 Backstroke SCY 1:11.65 split/total mismatch
Front half 34.73s · back half 36.92s
200 Backstroke SCY 2:30.87 split/total mismatch
100 Breaststroke SCY 1:23.73 split/total mismatch
Front half 39.27s · back half 44.46s
200 Breaststroke SCY 2:58.48 split/total mismatch
100 Butterfly SCY 1:26.20 split/total mismatch
Front half 39.19s · back half 47.01s
200 Butterfly SCY 2:54.20 split/total mismatch
100 Individual Medley SCY 1:12.16 split/total mismatch
Front half 33.89s · back half 38.27s
200 Individual Medley SCY 2:38.51 split/total mismatch
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.