Jacob Birch

Mage 16COFGFLBERKFSTJHRMTUN

391 plausible swims · 77 meets · 2016-05-28 → 2026-06-14

Personal records

Event	Course	Best	Cut	Date	Meet
25 Freestyle	SCY	18.87		2018-03-11	2018 CO Jeffco Bronze Cup slow pool
50 Freestyle	SCY	22.83	AA+0.44s to AAA	2026-03-14	2026 Fl Swimming Spring Senior Championships venue
100 Freestyle	SCY	50.47	AA+1.48s to AAA	2026-03-15	2026 Fl Swimming Spring Senior Championships venue
200 Freestyle	SCY	1:56.29	A+4.30s to AA	2025-02-21	2025 Berkeley Last Chance Meet
500 Freestyle	SCY	5:25.38	BB+7.89s to A	2024-02-10	CVST Last Chance Sweetheart Meet slow pool
1650 Freestyle	SCY	18:28.73	BB+5.94s to A	2025-01-03	Berkeley Training Challange venue
25 Backstroke	SCY	21.66		2018-03-11	2018 CO Jeffco Bronze Cup slow pool
50 Backstroke	SCY	26.88	A+0.79s to AA	2025-03-16	2025 Florida Swimming Spring Senior Champs venue
100 Backstroke	SCY	1:00.00	BB+1.91s to A	2024-10-27	2024 GTSA TYR Swim Classic at Berkeley venue
200 Backstroke	SCY	2:18.77	B+0.88s to BB	2025-02-22	2025 Berkeley Last Chance Meet venue
25 Breaststroke	SCY	24.22		2018-10-13	2018 CO FST Swim Pink slow pool
50 Breaststroke	SCY	28.81	AAA+1.22s to AAAA	2025-03-14	2025 Florida Swimming Spring Senior Champs venue
100 Breaststroke	SCY	1:02.01	AA+1.52s to AAA	2026-03-15	2026 Fl Swimming Spring Senior Championships venue
200 Breaststroke	SCY	2:16.96	AA+5.67s to AAA	2026-03-13	2026 Fl Swimming Spring Senior Championships venue
25 Butterfly	SCY	23.25		2018-03-10	2018 CO Jeffco Bronze Cup slow pool
50 Butterfly	SCY	26.71	A+0.62s to AA	2025-01-18	2025 CAT Al Soltis Memorial Invitational Meet venue
100 Butterfly	SCY	59.82	BB+2.13s to A	2024-11-23	SPA - PYP NOVEMBER 2024 venue
200 Butterfly	SCY	2:34.04	+3.35s to B	2024-02-17	2024 Last Chance Meet venue
100 Individual Medley	SCY	1:01.26		2026-02-26	Berkeley 2026 Spring Time Trials venue
200 Individual Medley	SCY	2:01.39	AA+2.50s to AAA	2026-03-14	2026 Fl Swimming Spring Senior Championships venue
400 Individual Medley	SCY	4:43.01	BB+5.32s to A	2024-03-01	2024 Florida Swimming FLAGS NORTH venue
50 Freestyle	LCM	25.67	AAA+0.88s to AAAA	2026-06-13	2026 RAFC Summer Solstice Invitational venue
100 Freestyle	LCM	58.18	AA+1.69s to AAA	2026-05-17	2026 Kent B. Holdren Memorial Meet venue
200 Freestyle	LCM	2:16.35	BB+1.56s to A	2024-06-09	2024 TAMPA BAY SWIM CLASSIC venue
400 Freestyle	LCM	4:53.83	BB+6.24s to A	2024-05-10	2024 SYS Memorial Meet venue
50 Backstroke	LCM	31.35	A+0.26s to AA	2026-06-14	2026 RAFC Summer Solstice Invitational venue
100 Backstroke	LCM	1:07.68	A+2.39s to AA	2026-06-12	2026 RAFC Summer Solstice Invitational venue
200 Backstroke	LCM	2:37.81	BB+10.12s to A	2024-06-30	2024 SPA'S SEMINOLE SUNRISE LANES SWIM MEET venue
50 Breaststroke	LCM	33.57	AA+0.68s to AAA	2026-06-12	2026 RAFC Summer Solstice Invitational venue
100 Breaststroke	LCM	1:13.32	AA+2.73s to AAA	2026-06-13	2026 RAFC Summer Solstice Invitational venue
200 Breaststroke	LCM	2:41.72	A+1.23s to AA	2026-06-14	2026 RAFC Summer Solstice Invitational venue
50 Butterfly	LCM	29.09	AA+0.90s to AAA	2026-05-17	2026 Kent B. Holdren Memorial Meet venue
100 Butterfly	LCM	1:05.68	A+2.49s to AA	2026-06-12	2026 RAFC Summer Solstice Invitational venue
200 Individual Medley	LCM	2:20.63	AA+1.94s to AAA	2026-06-14	2026 RAFC Summer Solstice Invitational venue
400 Individual Medley	LCM	5:18.27	A+9.28s to AA	2025-06-06	2025 TAMPA BAY SWIM CLASSIC venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.

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	21.28	flying	200 Free Relay (leg 4)	2025-03-14	2025 Florida Swimming Spring Senior Champs
100 Freestyle	SCY	49.05	flying	400 Free Relay (leg 2)	2026-03-14	2026 Fl Swimming Spring Senior Championships
200 Freestyle	SCY	1:49.28	flying	800 Free Relay (leg 4)	2026-03-12	2026 Fl Swimming Spring Senior Championships
50 Backstroke	SCY	28.25	flat	200 Medley Relay	2024-10-27	2024 GTSA TYR Swim Classic at Berkeley
50 Breaststroke	SCY	28.12	flying	200 Medley Relay (leg 2)	2026-03-14	2026 Fl Swimming Spring Senior Championships
100 Breaststroke	SCY	1:01.25	flying	400 Medley Relay (leg 2)	2025-03-14	2025 Florida Swimming Spring Senior Champs
50 Butterfly	SCY	42.52	flying	200 Medley Relay (leg 3)	2019-10-19	2019 CO PPA vs JH vs HRA Double Dual
50 Freestyle	LCM	25.27	flying	200 Free Relay (leg 3)	2026-02-14	2026 SZSS Spring Championships
100 Freestyle	LCM	56.71	flying	400 Free Relay (leg 3)	2025-07-19	2025 Florida Summer Senior Championships
200 Freestyle	LCM	2:03.67	flying	800 Free Relay (leg 4)	2026-02-12	2026 SZSS Spring Championships
50 Breaststroke	LCM	32.69	flying	200 Medley Relay (leg 2)	2025-07-19	2025 Florida Summer Senior Championships
100 Breaststroke	LCM	1:12.92	flying	400 Medley Relay (leg 2)	2026-02-14	2026 SZSS Spring 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 15-16 · SCY

3707 points (6/6 events)

Event	Time	Points
500 FR SCY	5:25.38	612
200 BK SCY	2:18.77	507
200 BR SCY	2:16.96	765
200 FL SCY	2:34.04	391
200 IM SCY	2:01.39	810
400 IM SCY	4:43.01	622

IMR 15-16 · LCM

3586 points (5/5 events)

Event	Time	Points
200 FR LCM	2:16.35	639
100 BK LCM	1:07.68	679
100 BR LCM	1:13.32	766
100 FL LCM	1:05.68	674
200 IM LCM	2:20.63	828

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

PR splits

100 Freestyle SCY 50.47

24.27

26.20

Front half 24.27s · back half 26.20s

200 Freestyle SCY 1:56.29 split/total mismatch

26.86

30.02

30.36

29.05

500 Freestyle SCY 5:25.38

29.43

32.66

33.23

33.10

32.95

33.02

32.74

33.03

33.36

31.86

Front half 161.37s · back half 164.01s

1650 Freestyle SCY 18:28.73

31.68

34.08

34.77

34.13

34.60

33.36

34.53

35.07

35.10

33.52

34.02

34.60

36.11

35.12

34.55

35.51

35.64

32.76

32.49

32.80

33.36

32.10

33.47

32.34

32.39

32.61

32.97

32.25

32.01

32.02

33.17

32.94

32.66

100 Backstroke SCY 1:00.00

29.06

30.94

Front half 29.06s · back half 30.94s

200 Backstroke SCY 2:18.77

31.74

35.12

36.37

35.54

Front half 66.86s · back half 71.91s

100 Breaststroke SCY 1:02.01

29.07

32.94

Front half 29.07s · back half 32.94s

200 Breaststroke SCY 2:16.96

30.71

34.67

35.40

36.18

Front half 65.38s · back half 71.58s

100 Butterfly SCY 59.82

27.71

32.11

Front half 27.71s · back half 32.11s

200 Butterfly SCY 2:34.04

33.19

39.89

42.02

38.94

Front half 73.08s · back half 80.96s

100 Individual Medley SCY 1:01.26

29.62

31.64

Front half 29.62s · back half 31.64s

200 Individual Medley SCY 2:01.39

25.95

31.65

35.42

28.37

Front half 57.60s · back half 63.79s

400 Individual Medley SCY 4:43.01

32.11

37.81

36.64

36.55

40.00

39.88

31.47

28.55

Front half 143.11s · back half 139.90s

100 Freestyle LCM 58.18

28.45

29.73

Front half 28.45s · back half 29.73s

200 Freestyle LCM 2:16.35

33.08

35.25

35.37

32.65

Front half 68.33s · back half 68.02s

400 Freestyle LCM 4:53.83

32.85

37.37

37.14

37.39

37.30

37.06

37.79

36.93

Front half 144.75s · back half 149.08s

100 Backstroke LCM 1:07.68

33.49

34.19

Front half 33.49s · back half 34.19s

200 Backstroke LCM 2:37.81

37.61

40.60

40.82

38.78

Front half 78.21s · back half 79.60s

100 Breaststroke LCM 1:13.32

35.16

38.16

Front half 35.16s · back half 38.16s

200 Breaststroke LCM 2:41.72

36.86

40.41

42.66

41.79

Front half 77.27s · back half 84.45s

100 Butterfly LCM 1:05.68

30.29

35.39

Front half 30.29s · back half 35.39s

200 Individual Medley LCM 2:20.63

30.00

38.04

41.00

31.59

Front half 68.04s · back half 72.59s

400 Individual Medley LCM 5:18.27

32.99

39.64

44.42

44.06

44.71

46.09

33.73

32.63

Front half 161.11s · back half 157.16s

Reaction time

fastest 0.65s average 0.775s slowest 1.78s 19 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.

25 Freestyle SCY 18.87 8 swims

50 Freestyle SCY 22.83 25 swims

100 Freestyle SCY 50.47 17 swims

200 Freestyle SCY 1:56.29 10 swims

500 Freestyle SCY 5:25.38 2 swims

1650 Freestyle SCY 18:28.73 1 swim

25 Backstroke SCY 21.66 6 swims

50 Backstroke SCY 26.88 20 swims

100 Backstroke SCY 1:00.00 15 swims

200 Backstroke SCY 2:18.77 3 swims

25 Breaststroke SCY 24.22 6 swims

50 Breaststroke SCY 28.81 19 swims

100 Breaststroke SCY 1:02.01 18 swims

200 Breaststroke SCY 2:16.96 11 swims

25 Butterfly SCY 23.25 5 swims

50 Butterfly SCY 26.71 17 swims

100 Butterfly SCY 59.82 9 swims

200 Butterfly SCY 2:34.04 1 swim

100 Individual Medley SCY 1:01.26 11 swims

200 Individual Medley SCY 2:01.39 12 swims

400 Individual Medley SCY 4:43.01 3 swims

50 Freestyle LCM 25.67 24 swims

100 Freestyle LCM 58.18 16 swims

200 Freestyle LCM 2:16.35 4 swims

400 Freestyle LCM 4:53.83 1 swim

50 Backstroke LCM 31.35 19 swims

100 Backstroke LCM 1:07.68 16 swims

200 Backstroke LCM 2:37.81 1 swim

50 Breaststroke LCM 33.57 19 swims

100 Breaststroke LCM 1:13.32 22 swims

200 Breaststroke LCM 2:41.72 12 swims

50 Butterfly LCM 29.09 17 swims

100 Butterfly LCM 1:05.68 5 swims

200 Individual Medley LCM 2:20.63 13 swims

400 Individual Medley LCM 5:18.27 3 swims