swimMyles Koff
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 17.49 | 2016-05-14 | GTAC 8-under Aquatic Festivalslow pool | |
| 50 Freestyle | SCY | 23.28 | A+0.59s to AA·+0.89s to Sectionals | 2024-10-19 | 2024 NBAC Fall Fastival Meetfast pool |
| 100 Freestyle | SCY | 46.03 | AAA+0.54s to AAAA·Futures ✓+1.14s to Winter JNs | 2026-02-22 | 2026 Speedo MD LSC Senior Champsvenue |
| 200 Freestyle | SCY | 1:40.87 | AAA+0.28s to AAAA·Futures ✓+2.48s to Winter JNs | 2024-12-13 | 2024 NBAC 50th Annual Christmas Invitationalvenue |
| 500 Freestyle | SCY | 4:39.53 | AAA+5.94s to AAAA·Sectionals ✓+2.44s to Futures | 2024-01-01 | 2024 nbac thanksgiving meet final results pdf 1 |
| 1000 Freestyle | SCY | 9:35.46 | AAA+0.57s to AAAA·Sectionals ✓+1.17s to Futures | 2024-12-12 | 2024 NBAC 50th Annual Christmas Invitationalvenue |
| 1650 Freestyle | SCY | 16:17.48 | AAA+19.29s to AAAA·Sectionals ✓+11.99s to Futures | 2024-10-19 | 2024 NBAC Fall Fastival Meetfast pool |
| 25 Backstroke | SCY | 17.53 | 2017-01-28 | 2017 Robert J Hogan Memorial Mini Meet | |
| 50 Backstroke | SCY | 25.23 | AA+0.94s to AAA·+1.54s to Futures | 2025-12-11 | 2025 NBAC 51st Annual Christmas Invitationalvenue |
| 100 Backstroke | SCY | 53.96 | A+0.07s to AA·Sectionals ✓+2.47s to Futures | 2024-01-01 | 2024 nbac thanksgiving meet final results pdf 1 |
| 200 Backstroke | SCY | 1:55.85 | AA+2.36s to AAA·Sectionals ✓+3.06s to Futures | 2025-11-15 | 2025 NBAC Thanksgiving Meetfast pool |
| 25 Breaststroke | SCY | 22.51 | 2016-05-14 | GTAC 8-under Aquatic Festivalslow pool | |
| 50 Breaststroke | SCY | 28.38 | AA+0.39s to AAA·+2.09s to Futures | 2025-12-11 | 2025 NBAC 51st Annual Christmas Invitationalvenue |
| 100 Breaststroke | SCY | 59.79 | AA+0.90s to AAA·Sectionals ✓+1.80s to Futures | 2024-12-13 | 2024 NBAC 50th Annual Christmas Invitationalvenue |
| 200 Breaststroke | SCY | 2:04.31 | AAA+2.12s to AAAA·Futures ✓+2.72s to Winter JNs | 2026-02-21 | 2026 Speedo MD LSC Senior Champsvenue |
| 25 Butterfly | SCY | 21.39 | 2016-05-14 | GTAC 8-under Aquatic Festivalslow pool | |
| 50 Butterfly | SCY | 24.01 | AAA+0.82s to AAAA·+1.12s to Futures | 2025-12-11 | 2025 NBAC 51st Annual Christmas Invitationalvenue |
| 100 Butterfly | SCY | 50.32 | AAA+1.13s to AAAA·Futures ✓+1.63s to Winter JNs | 2025-12-12 | 2025 NBAC 51st Annual Christmas Invitationalvenue |
| 200 Butterfly | SCY | 1:48.56 | AAAA·Winter JNs ✓+0.67s to Jr Nationals | 2026-02-21 | 2026 Speedo MD LSC Senior Champsvenue |
| 100 Individual Medley | SCY | 51.32 | 2026-02-19 | 2026 Speedo MD LSC Senior Champsvenue | |
| 200 Individual Medley | SCY | 1:49.42 | AAAA·Winter JNs ✓+0.93s to Jr Nationals | 2026-02-22 | 2026 Speedo MD LSC Senior Champsvenue |
| 400 Individual Medley | SCY | 3:55.33 | AAAA·Winter JNs ✓+2.64s to Jr Nationals | 2025-02-20 | 2025 Speedo MD LSC Senior Champs |
| 50 Freestyle | LCM | 25.38 | AA+0.29s to AAA·Sectionals ✓+0.79s to Futures | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 100 Freestyle | LCM | 54.11 | AAA+1.42s to AAAA·Sectionals ✓+0.52s to Futures | 2026-07-12 | 2026 NBAC Mid Summer Classicvenue |
| 200 Freestyle | LCM | 1:55.51 | AAA+0.32s to AAAA·Futures ✓+0.22s to Winter JNs | 2026-03-27 | 2026 Speedo Sectional Championshipvenue |
| 400 Freestyle | LCM | 4:15.51 | AAA+9.92s to AAAA·Sectionals ✓+5.52s to Futures | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 800 Freestyle | LCM | 9:07.99 | AA+9.20s to AAA·+9.60s to Sectionals | 2023-07-06 | 2023 NBAC Mid-Summer Classicvenue |
| 1500 Freestyle | LCM | 18:51.28 | BB+6.59s to A·+92.29s to Sectionals | 2022-06-09 | 2022 Summer Speedo Spectacularevenue |
| 50 Backstroke | LCM | 29.08 | AAA+1.09s to AAAA·+1.19s to Futures | 2025-05-16 | 2025 NBAC Spring LC Invitational Meetvenue |
| 100 Backstroke | LCM | 1:01.93 | AA+0.54s to AAA·Sectionals ✓+1.34s to Futures | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 200 Backstroke | LCM | 2:13.86 | AA+0.07s to AAA·Sectionals ✓+1.97s to Futures | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 50 Breaststroke | LCM | 32.19 | AAA+1.50s to AAAA·+1.30s to Futures | 2025-05-16 | 2025 NBAC Spring LC Invitational Meetvenue |
| 100 Breaststroke | LCM | 1:09.95 | AA+1.56s to AAA·+0.26s to Sectionals | 2025-01-01 | 2025 nbac mid summer classic final results pdf |
| 200 Breaststroke | LCM | 2:31.78 | AA+2.09s to AAA·Sectionals ✓+2.69s to Futures | 2026-03-28 | 2026 Speedo Sectional Championshipvenue |
| 50 Butterfly | LCM | 26.84 | AAA+0.75s to AAAA·+0.55s to Futures | 2025-08-02 | 2025 Speedo Junior National Championshipsfast pool |
| 100 Butterfly | LCM | 58.16 | AAA+1.87s to AAAA·Sectionals ✓+0.17s to Futures | 2026-07-10 | 2026 NBAC Mid Summer Classicvenue |
| 200 Butterfly | LCM | 2:07.31 | AAA+1.42s to AAAA·Futures ✓+0.92s to Winter JNs | 2026-08-03 | 2026 Speedo Junior National Championshipsvenue |
| 200 Individual Medley | LCM | 2:06.76 | AAAA·Jr Nationals ✓+1.27s to US Open | 2026-08-07 | 2026 Speedo Junior National Championshipsvenue |
| 400 Individual Medley | LCM | 4:31.59 | AAAA·Jr Nationals ✓+2.70s to US Open | 2025-07-31 | 2025 Speedo Junior National Championshipsfast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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 | 22.42 | flat | 200 Free Relay | 2025-10-18 | 2025 NBAC Fall Fastival Meet |
| 50 Freestyle | SCY | 21.23 | flying | 200 Free Relay (leg 2) | 2026-02-21 | 2026 Speedo MD LSC Senior Champs |
| 100 Freestyle | SCY | 46.55 | flat | 400 Free Relay | 2025-12-12 | 2025 NBAC 51st Annual Christmas Invitational |
| 100 Freestyle | SCY | 45.65 | flying | 400 Medley Relay (leg 4) | 2025-12-13 | 2025 NBAC 51st Annual Christmas Invitational |
| 100 Freestyle | SCY | 45.10 | flying | 400 Free Relay (leg 2) | 2026-02-22 | 2026 Speedo MD LSC Senior Champs |
| 200 Freestyle | SCY | 1:43.17 | flying | 800 Free Relay (leg 4) | 2026-02-19 | 2026 Speedo MD LSC Senior Champs |
| 50 Backstroke | SCY | 30.81 | flat | 200 Medley Relay | 2021-11-21 | 2021 NBAC Thanksgiving Meet |
| 100 Backstroke | SCY | 1:02.71 | flat | 400 Medley Relay | 2022-03-13 | 2022 MD LSC JR CHAMPS - NBAC SITE |
| 50 Breaststroke | SCY | 26.66 | flying | 200 Medley Relay (leg 2) | 2025-11-16 | 2025 NBAC Thanksgiving Meet |
| 100 Breaststroke | SCY | 1:01.45 | flying | 400 Medley Relay (leg 2) | 2024-01-20 | 2024 ISCA January Classic |
| 50 Butterfly | SCY | 22.60 | flying | 200 Medley Relay (leg 3) | 2026-02-19 | 2026 Speedo MD LSC Senior Champs |
| 100 Butterfly | SCY | 50.08 | flying | 400 Medley Relay (leg 3) | 2026-02-20 | 2026 Speedo MD LSC Senior Champs |
| 50 Freestyle | LCM | 24.24 | flying | 200 Free Relay (leg 3) | 2025-07-30 | 2025 Speedo Junior National Championships |
| 50 Freestyle | LCM | 24.38 | flying | 200 Medley Relay (leg 4) | 2025-08-01 | 2025 Speedo Junior National Championships |
| 100 Freestyle | LCM | 53.37 | flat | 400 Free Relay | 2026-03-28 | 2026 Speedo Sectional Championship |
| 100 Freestyle | LCM | 52.82 | flying | 400 Free Relay (leg 2) | 2025-08-02 | 2025 Speedo Junior National Championships |
| 100 Freestyle | LCM | 53.03 | flying | 400 Medley Relay (leg 4) | 2025-08-03 | 2025 Speedo Junior National Championships |
| 200 Freestyle | LCM | 1:54.49 | flying | 800 Free Relay (leg 3) | 2025-07-31 | 2025 Speedo Junior National Championships |
| 100 Breaststroke | LCM | 1:08.45 | flying | 400 Medley Relay (leg 2) | 2026-03-29 | 2026 Speedo Sectional Championship |
| 50 Butterfly | LCM | 26.07 | flying | 200 Medley Relay (leg 3) | 2026-08-05 | 2026 Speedo Junior National 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.
IMX / IMR
IMX 17-18 · SCY
5770 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:39.53 | 925 |
| 200 BK SCY | 1:55.85 | 807 |
| 200 BR SCY | 2:04.31 | 938 |
| 200 FL SCY | 1:48.56 | 1034 |
| 200 IM SCY | 1:49.42 | 1032 |
| 400 IM SCY | 3:55.33 | 1034 |
IMR 17-18 · LCM
4557 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 1:55.51 | 978 |
| 100 BK LCM | 1:01.93 | 829 |
| 100 BR LCM | 1:09.95 | 805 |
| 100 FL LCM | 58.16 | 892 |
| 200 IM LCM | 2:06.76 | 1053 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 46.03
Front half 22.35s · back half 23.68s
200 Freestyle SCY 1:40.87
Front half 49.30s · back half 51.57s
500 Freestyle SCY 4:39.53
Front half 135.17s · back half 144.36s
1000 Freestyle SCY 9:35.46
Front half 279.64s · back half 295.82s
1650 Freestyle SCY 16:17.48
100 Backstroke SCY 53.96
Front half 26.69s · back half 27.27s
200 Backstroke SCY 1:55.85
Front half 56.19s · back half 59.66s
100 Breaststroke SCY 59.79
Front half 28.20s · back half 31.59s
200 Breaststroke SCY 2:04.31
Front half 59.92s · back half 64.39s
100 Butterfly SCY 50.32
Front half 23.79s · back half 26.53s
200 Butterfly SCY 1:48.56
Front half 51.84s · back half 56.72s
100 Individual Medley SCY 51.32
Front half 23.67s · back half 27.65s
200 Individual Medley SCY 1:49.42
Front half 52.24s · back half 57.18s
100 Freestyle LCM 54.11
Front half 25.90s · back half 28.21s
200 Freestyle LCM 1:55.51
Front half 56.33s · back half 59.18s
400 Freestyle LCM 4:15.51
Front half 123.69s · back half 131.82s
800 Freestyle LCM 9:07.99
Front half 271.34s · back half 276.65s
1500 Freestyle LCM 18:51.28
Front half 556.46s · back half 574.82s
100 Backstroke LCM 1:01.93
Front half 30.10s · back half 31.83s
200 Backstroke LCM 2:13.86
Front half 64.88s · back half 68.98s
100 Breaststroke LCM 1:09.95
Front half 32.78s · back half 37.17s
200 Breaststroke LCM 2:31.78
Front half 71.14s · back half 80.64s
100 Butterfly LCM 58.16
Front half 27.31s · back half 30.85s
200 Butterfly LCM 2:07.31 RT 0.63s
Front half 59.78s · back half 67.53s
200 Individual Medley LCM 2:06.76 RT 0.64s
Front half 60.17s · back half 66.59s
400 Individual Medley LCM 4:31.59 RT 0.67s
Front half 131.22s · back half 140.37s
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.