Mikayla Costello

Fage 13FGFLPSASJACUNUN-SJ

180 plausible swims · 30 meets · 2024-01-13 → 2026-06-28

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	25.97	AAA+0.98s to AAAA	2025-12-05	RAFC Winter Classic venue
100 Freestyle	SCY	55.86	AAA+1.47s to AAAA	2026-03-07	2026 Florida Swimming FLAGS NORTH venue
200 Freestyle	SCY	2:04.45	AA+0.56s to AAA	2026-01-17	2026 G.O.A.T. TYR Team Challenge and SYOA venue
500 Freestyle	SCY	5:40.34	AA+9.85s to AAA	2025-10-12	2025 October Classic venue
1650 Freestyle	SCY	19:21.28	AA+16.69s to AAA	2025-10-26	2025 SJAC Halloween Invitational venue
100 Backstroke	SCY	1:08.97	BB+0.98s to A	2026-01-18	2026 G.O.A.T. TYR Team Challenge and SYOA venue
200 Backstroke	SCY	2:33.96	BB+7.37s to A	2025-10-25	2025 SJAC Halloween Invitational venue
50 Breaststroke	SCY	32.01	AAAA	2025-12-07	RAFC Winter Classic venue
100 Breaststroke	SCY	1:09.20	AAA+1.01s to AAAA	2025-12-05	RAFC Winter Classic venue
200 Breaststroke	SCY	2:30.44	AAA+3.45s to AAAA	2026-03-06	2026 Florida Swimming FLAGS NORTH venue
50 Butterfly	SCY	33.46	BB+1.97s to A	2024-02-04	Groundhog Day Meet venue
100 Butterfly	SCY	1:06.84	A+2.05s to AA	2025-10-11	2025 October Classic venue
100 Individual Medley	SCY	1:07.35		2025-11-23	2025 SJAC Turkey Meet venue
200 Individual Medley	SCY	2:22.05	AA+3.26s to AAA	2025-12-07	RAFC Winter Classic venue
400 Individual Medley	SCY	5:10.75	A+3.46s to AA	2025-10-25	2025 SJAC Halloween Invitational venue
50 Freestyle	LCM	28.88	AAA+0.29s to AAAA	2026-06-27	2026 Planet Swim Summer Championships venue
100 Freestyle	LCM	1:03.66	AAA+1.57s to AAAA	2025-07-10	2025 FL Summer Age Group Championships venue
200 Freestyle	LCM	2:14.73	AAAA	2026-06-26	2026 Planet Swim Summer Championships venue
400 Freestyle	LCM	5:00.78	AA+2.89s to AAA	2026-05-17	2026 PSA May Invite fast pool
50 Backstroke	LCM	39.51	BB+2.02s to A	2025-04-27	14th Annual JAX50 Sprint Dual Challenge venue
100 Backstroke	LCM	1:22.83	BB+3.44s to A	2025-05-17	2025 PSA May Invite venue
200 Backstroke	LCM	3:02.80	BB+11.61s to A	2025-05-18	2025 PSA May Invite venue
50 Breaststroke	LCM	36.21	AAAA	2026-02-12	2026 SZSS Spring Championships venue
100 Breaststroke	LCM	1:19.44	AAA+0.85s to AAAA	2026-06-28	2026 Planet Swim Summer Championships venue
200 Breaststroke	LCM	2:53.34	AAA+4.05s to AAAA	2026-02-15	2026 SZSS Spring Championships venue
50 Butterfly	LCM	32.70	AA+0.31s to AAA	2025-04-27	14th Annual JAX50 Sprint Dual Challenge venue
100 Butterfly	LCM	1:13.17	AA+2.58s to AAA	2026-06-27	2026 Planet Swim Summer Championships venue
200 Individual Medley	LCM	2:36.13	AAA+4.34s to AAAA	2026-06-28	2026 Planet Swim Summer Championships venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.

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	26.84	flat	200 Free Relay	2025-03-06	2025 Florida Swimming FLAGS NORTH
100 Freestyle	SCY	1:00.35	flat	400 Free Relay	2024-03-03	2024 Florida Swimming FLAGS NORTH
100 Freestyle	SCY	57.66	flying	400 Free Relay (leg 4)	2025-03-09	2025 Florida Swimming FLAGS NORTH
50 Breaststroke	SCY	32.95	flying	200 Medley Relay (leg 2)	2025-03-08	2025 Florida Swimming FLAGS NORTH
100 Breaststroke	SCY	1:13.31	flying	400 Medley Relay (leg 2)	2025-03-06	2025 Florida Swimming FLAGS NORTH

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 13-14 · SCY

3577 points (5/6 events — incomplete)

Event	Time	Points
500 FR SCY	5:40.34	749
200 BK SCY	2:33.96	532
200 BR SCY	2:30.44	864
200 IM SCY	2:22.05	745
400 IM SCY	5:10.75	687
200 FL SCY	—	0

IMR 13-14 · LCM

3930 points (5/5 events)

Event	Time	Points
200 FR LCM	2:14.73	929
100 BK LCM	1:22.83	536
100 BR LCM	1:19.44	903
100 FL LCM	1:13.17	713
200 IM LCM	2:36.13	849

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 55.86

26.46

29.40

Front half 26.46s · back half 29.40s

200 Freestyle SCY 2:04.45

29.12

32.14

32.35

30.84

Front half 61.26s · back half 63.19s

500 Freestyle SCY 5:40.34

29.62

32.95

34.28

34.92

34.75

34.73

35.31

34.89

35.10

33.79

Front half 166.52s · back half 173.82s

1650 Freestyle SCY 19:21.28

31.69

34.26

34.19

34.47

34.88

34.75

35.14

35.00

34.64

35.21

34.56

34.52

34.94

35.43

35.23

35.78

35.51

35.16

35.87

36.16

35.03

36.07

35.88

35.85

36.08

35.91

36.45

35.72

36.08

35.53

35.55

35.10

34.64

200 Backstroke SCY 2:33.96

36.89

38.88

39.31

38.88

Front half 75.77s · back half 78.19s

100 Breaststroke SCY 1:09.20

32.46

36.74

Front half 32.46s · back half 36.74s

200 Breaststroke SCY 2:30.44

34.66

38.66

38.52

38.60

Front half 73.32s · back half 77.12s

100 Butterfly SCY 1:06.84

29.78

37.06

Front half 29.78s · back half 37.06s

100 Individual Medley SCY 1:07.35

32.77

34.58

Front half 32.77s · back half 34.58s

200 Individual Medley SCY 2:22.05

29.89

37.33

40.52

34.31

Front half 67.22s · back half 74.83s

400 Individual Medley SCY 5:10.75

32.05

37.95

43.37

41.91

42.40

42.72

35.61

34.74

Front half 155.28s · back half 155.47s

100 Freestyle LCM 1:03.66 RT 0.81s

31.02

32.64

Front half 31.02s · back half 32.64s

200 Freestyle LCM 2:14.73

31.20

33.81

34.40

35.32

Front half 65.01s · back half 69.72s

400 Freestyle LCM 5:00.78

34.74

38.65

35.12

41.80

33.55

42.51

33.13

41.28

Front half 150.31s · back half 150.47s

200 Backstroke LCM 3:02.80

44.03

46.89

46.42

45.46

Front half 90.92s · back half 91.88s

100 Breaststroke LCM 1:19.44

37.35

42.09

Front half 37.35s · back half 42.09s

200 Breaststroke LCM 2:53.34

39.64

44.55

44.70

44.45

Front half 84.19s · back half 89.15s

100 Butterfly LCM 1:13.17

34.29

38.88

Front half 34.29s · back half 38.88s

200 Individual Medley LCM 2:36.13

32.85

43.35

44.95

34.98

Front half 76.20s · back half 79.93s

Reaction time

fastest 0.66s average 0.725s slowest 0.81s 31 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 25.97 9 swims

100 Freestyle SCY 55.86 12 swims

200 Freestyle SCY 2:04.45 4 swims

500 Freestyle SCY 5:40.34 2 swims

1650 Freestyle SCY 19:21.28 1 swim

100 Backstroke SCY 1:08.97 3 swims

200 Backstroke SCY 2:33.96 1 swim

50 Breaststroke SCY 32.01 13 swims

100 Breaststroke SCY 1:09.20 16 swims

200 Breaststroke SCY 2:30.44 11 swims

50 Butterfly SCY 33.46 1 swim

100 Butterfly SCY 1:06.84 1 swim

100 Individual Medley SCY 1:07.35 5 swims

200 Individual Medley SCY 2:22.05 3 swims

400 Individual Medley SCY 5:10.75 1 swim

50 Freestyle LCM 28.88 14 swims

100 Freestyle LCM 1:03.66 10 swims

200 Freestyle LCM 2:14.73 8 swims

400 Freestyle LCM 5:00.78 4 swims

50 Backstroke LCM 39.51 3 swims

100 Backstroke LCM 1:22.83 3 swims

200 Backstroke LCM 3:02.80 1 swim

50 Breaststroke LCM 36.21 12 swims

100 Breaststroke LCM 1:19.44 15 swims

200 Breaststroke LCM 2:53.34 14 swims

50 Butterfly LCM 32.70 3 swims

100 Butterfly LCM 1:13.17 4 swims

200 Individual Medley LCM 2:36.13 6 swims