Ethan Kosin

MMNMTMWSTRMUOFM

119 plausible swims · 18 meets · 2017-08-03 → 2026-06-27

Personal records

Event	Course	Best	Date	Meet
50 Freestyle	SCY	21.25	2024-11-24	2024 MN STRM 3rd Annual Movember Invite venue
100 Freestyle	SCY	46.19	2024-11-23	2024 MN STRM 3rd Annual Movember Invite venue
200 Freestyle	SCY	1:38.56	2025-03-14	2025 MN AQJT Senior Short Course State Champi venue
1000 Freestyle	SCY	9:31.34	2025-03-13	2025 MN AQJT Senior Short Course State Champi venue
100 Backstroke	SCY	49.72	2024-11-23	2024 MN STRM 3rd Annual Movember Invite venue
200 Backstroke	SCY	1:48.01	2025-03-16	2025 MN AQJT Senior Short Course State Champi venue
100 Butterfly	SCY	48.84	2025-03-14	2025 MN AQJT Senior Short Course State Champi venue
200 Butterfly	SCY	1:48.59	2025-03-15	2025 MN AQJT Senior Short Course State Champi venue
200 Individual Medley	SCY	1:51.44	2025-03-16	2025 MN AQJT Senior Short Course State Champi venue
50 Freestyle	LCM	23.86	2025-06-27	2025 MN AQJT Aquajets Summer Spectacular venue
100 Freestyle	LCM	52.76	2025-07-24	2025 TYR FUTURES MADISON venue
200 Freestyle	LCM	2:00.06	2024-07-24	2024 USAS Futures Championships-Minneapolis venue
400 Freestyle	LCM	4:09.10	2024-06-21	2024 MN AQJT Aquajets Summer Spectacular venue
800 Freestyle	LCM	10:16.97	2019-08-01	2019 ND Central Zone 14 & U Championship
1500 Freestyle	LCM	16:54.64	2024-04-21	2024 MN UOFM Gopher Invite slow pool
50 Backstroke	LCM	26.35	2026-06-12	2026 MN AQJT Aquajets Summer Spectacular venue
100 Backstroke	LCM	56.51	2026-06-14	2026 MN AQJT Aquajets Summer Spectacular venue
200 Backstroke	LCM	2:02.90	2026-06-13	2026 MN AQJT Aquajets Summer Spectacular venue
50 Butterfly	LCM	24.87	2026-06-14	2026 MN AQJT Aquajets Summer Spectacular venue
100 Butterfly	LCM	56.55	2025-07-25	2025 TYR FUTURES MADISON venue
200 Butterfly	LCM	2:06.22	2024-07-24	2024 USAS Futures Championships-Minneapolis venue
200 Individual Medley	LCM	2:13.25	2025-05-16	2025 MN STRM Spring Startup venue

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
200 Freestyle	SCY	1:42.13	flying	800 Free Relay (leg 4)	2025-03-13	2025 MN AQJT Senior Short Course State Champi
50 Backstroke	SCY	22.53	flat	200 Medley Relay	2025-03-13	2025 MN AQJT Senior Short Course State Champi
50 Freestyle	LCM	23.70	flat	200 Free Relay	2025-07-23	2025 TYR FUTURES MADISON
100 Freestyle	LCM	52.36	flying	400 Free Relay (leg 4)	2025-07-25	2025 TYR FUTURES MADISON
200 Freestyle	LCM	1:58.16	flying	800 Free Relay (leg 4)	2024-07-18	2024 MN RSC Minnesota LC State Championship
50 Backstroke	LCM	26.94	flat	200 Medley Relay	2025-07-23	2025 TYR FUTURES MADISON
100 Backstroke	LCM	58.14	flat	400 Medley Relay	2025-07-26	2025 TYR FUTURES MADISON

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

PR splits

100 Freestyle SCY 46.19

22.28

23.91

Front half 22.28s · back half 23.91s

200 Freestyle SCY 1:38.56

22.53

25.57

25.39

25.07

Front half 48.10s · back half 50.46s

1000 Freestyle SCY 9:31.34

23.49

27.60

28.20

28.37

28.54

28.65

28.84

28.98

28.94

29.06

28.73

29.04

29.05

29.27

29.50

29.66

29.20

28.87

28.15

Front half 280.67s · back half 290.67s

100 Backstroke SCY 49.72 RT 0.57s

24.47

25.25

Front half 24.47s · back half 25.25s

200 Backstroke SCY 1:48.01

25.04

27.51

28.21

27.25

Front half 52.55s · back half 55.46s

100 Butterfly SCY 48.84

22.74

26.10

Front half 22.74s · back half 26.10s

200 Butterfly SCY 1:48.59

23.57

27.82

28.56

28.64

Front half 51.39s · back half 57.20s

200 Individual Medley SCY 1:51.44

23.19

26.84

35.45

25.96

Front half 50.03s · back half 61.41s

100 Freestyle LCM 52.76

25.13

27.63

Front half 25.13s · back half 27.63s

200 Freestyle LCM 2:00.06

26.58

29.92

30.99

32.57

Front half 56.50s · back half 63.56s

400 Freestyle LCM 4:09.10

27.47

30.82

31.87

31.95

32.16

32.34

32.12

30.37

Front half 122.11s · back half 126.99s

1500 Freestyle LCM 16:54.64

64.24

34.12

33.88

34.30

33.99

34.25

33.45

34.79

34.33

34.36

34.18

34.53

34.20

34.65

34.09

34.66

33.96

34.31

34.04

34.49

33.65

34.46

33.90

34.52

33.63

33.62

32.69

32.77

30.58

100 Backstroke LCM 56.51

26.08

30.43

Front half 26.08s · back half 30.43s

200 Backstroke LCM 2:02.90

28.58

30.72

31.60

32.00

Front half 59.30s · back half 63.60s

100 Butterfly LCM 56.55

26.62

29.93

Front half 26.62s · back half 29.93s

200 Butterfly LCM 2:06.22

28.16

32.57

32.80

32.69

Front half 60.73s · back half 65.49s

200 Individual Medley LCM 2:13.25

27.43

31.57

43.43

30.82

Front half 59.00s · back half 74.25s

Reaction time

fastest 0.53s average 0.550s slowest 0.57s 4 electronic starts

Start reaction over time faster starts higher

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.

50 Freestyle SCY 21.25 2 swims

100 Freestyle SCY 46.19 2 swims

200 Freestyle SCY 1:38.56 2 swims

1000 Freestyle SCY 9:31.34 1 swim

100 Backstroke SCY 49.72 2 swims

200 Backstroke SCY 1:48.01 5 swims

100 Butterfly SCY 48.84 5 swims

200 Butterfly SCY 1:48.59 3 swims

200 Individual Medley SCY 1:51.44 2 swims

50 Freestyle LCM 23.86 12 swims

100 Freestyle LCM 52.76 8 swims

200 Freestyle LCM 2:00.06 3 swims

400 Freestyle LCM 4:09.10 5 swims

800 Freestyle LCM 10:16.97 1 swim

1500 Freestyle LCM 16:54.64 1 swim

50 Backstroke LCM 26.35 13 swims

100 Backstroke LCM 56.51 18 swims

200 Backstroke LCM 2:02.90 13 swims

50 Butterfly LCM 24.87 2 swims

100 Butterfly LCM 56.55 8 swims

200 Butterfly LCM 2:06.22 9 swims

200 Individual Medley LCM 2:13.25 2 swims