Penny Brereton

Fage 17CZILLEOKBSCILPPD

30 plausible swims · 8 meets · 2019-08-01 → 2026-03-08

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	25.71	AA+0.72s to AAA	2026-03-05	2026 SC Illinois Senior Championships - copi venue
100 Freestyle	SCY	56.16	AA+2.07s to AAA	2025-03-06	2025 SC Illinois Senior Championships venue
50 Butterfly	SCY	27.48	AA+0.09s to AAA	2026-03-07	2026 SC Illinois Senior Championships - copi venue
100 Butterfly	SCY	59.46	AA+1.27s to AAA	2026-03-06	2026 SC Illinois Senior Championships - copi venue
200 Butterfly	SCY	2:11.62	AA+1.93s to AAA	2026-03-08	2026 SC Illinois Senior Championships - copi venue
400 Individual Medley	SCY	4:48.07	AA+9.88s to AAA	2025-03-07	2025 SC Illinois Senior Championships venue
50 Freestyle	LCM	29.70	A+0.01s to AA	2024-03-10	2024 USA Swimming Speedo Championship Series venue
100 Freestyle	LCM	1:03.74	AA+2.25s to AAA	2023-08-06	2023 Central Zone 14 & U Championship - KS slow pool
200 Freestyle	LCM	2:17.51	AA+4.42s to AAA	2023-08-04	2023 Central Zone 14 & U Championship - KS slow pool
400 Freestyle	LCM	4:52.74	AA+11.65s to AAA	2023-08-05	2023 Central Zone 14 & U Championship - KS slow pool
800 Freestyle	LCM	10:02.25	AA+19.76s to AAA	2023-08-04	2023 Central Zone 14 & U Championship - KS slow pool
50 Backstroke	LCM	37.72	BB+2.23s to A	2019-08-01	2019 WI Central Zone 14 & U Championship slow pool
100 Backstroke	LCM	1:21.32	B+0.43s to BB	2019-08-03	2019 WI Central Zone 14 & U Championship slow pool
50 Breaststroke	LCM	41.15	BB+1.46s to A	2019-08-01	2019 WI Central Zone 14 & U Championship slow pool
100 Breaststroke	LCM	1:33.15	B+1.86s to BB	2019-08-02	2019 WI Central Zone 14 & U Championship slow pool
100 Butterfly	LCM	1:09.66	A+0.37s to AA	2024-07-25	2024 LC Illinois Senior Championships
200 Butterfly	LCM	2:34.28	A+1.09s to AA	2025-08-03	2025 LC Illinois Senior Championships venue
400 Individual Medley	LCM	5:39.95	A+7.36s to AA	2024-07-26	2024 LC Illinois Senior Championships venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.

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	25.17	flying	200 Free Relay (leg 3)	2026-03-07	2026 SC Illinois Senior Championships - copi
100 Freestyle	SCY	54.69	flying	400 Free Relay (leg 3)	2026-03-08	2026 SC Illinois Senior Championships - copi
200 Freestyle	SCY	1:59.71	flying	800 Free Relay (leg 3)	2026-03-06	2026 SC Illinois Senior Championships - copi
50 Butterfly	SCY	27.01	flying	200 Medley Relay (leg 3)	2026-03-08	2026 SC Illinois Senior Championships - copi
100 Butterfly	SCY	59.92	flying	400 Medley Relay (leg 3)	2025-03-08	2025 SC Illinois Senior Championships
50 Freestyle	LCM	29.36	flat	200 Free Relay	2024-07-27	2024 LC Illinois Senior Championships
50 Freestyle	LCM	28.60	flying	200 Free Relay (leg 2)	2025-08-02	2025 LC Illinois Senior Championships
100 Freestyle	LCM	1:03.00	flying	400 Free Relay (leg 2)	2024-07-28	2024 LC Illinois Senior Championships
200 Freestyle	LCM	1:57.92	flying	800 Free Relay (leg 2)	2025-08-01	2025 LC Illinois Senior Championships
50 Butterfly	LCM	30.70	flying	200 Medley Relay (leg 3)	2024-07-28	2024 LC Illinois Senior Championships
100 Butterfly	LCM	1:08.42	flying	400 Medley Relay (leg 3)	2025-08-02	2025 LC Illinois Senior 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 · LCM

2152 points (3/6 events — incomplete)

Event	Time	Points
400 FR LCM	4:52.74	742
200 FL LCM	2:34.28	721
400 IM LCM	5:39.95	689
200 BK LCM	—	0
200 BR LCM	—	0
200 IM LCM	—	0

IMR 17-18 · LCM

2474 points (4/5 events — incomplete)

Event	Time	Points
200 FR LCM	2:17.51	765
100 BK LCM	1:21.32	498
100 BR LCM	1:33.15	483
100 FL LCM	1:09.66	728
200 IM LCM	—	0

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

PR splits

100 Freestyle SCY 56.16

26.96

29.20

Front half 26.96s · back half 29.20s

100 Butterfly SCY 59.46

27.73

31.73

Front half 27.73s · back half 31.73s

200 Butterfly SCY 2:11.62

28.61

32.97

34.21

35.83

Front half 61.58s · back half 70.04s

400 Individual Medley SCY 4:48.07

30.23

33.41

36.31

35.75

42.37

43.25

33.95

32.80

Front half 135.70s · back half 152.37s

100 Freestyle LCM 1:03.74

30.47

33.27

Front half 30.47s · back half 33.27s

200 Freestyle LCM 2:17.51

31.29

34.91

35.80

35.51

Front half 66.20s · back half 71.31s

400 Freestyle LCM 4:52.74

32.09

35.49

36.81

37.23

37.51

38.01

38.04

37.56

Front half 141.62s · back half 151.12s

800 Freestyle LCM 10:02.25

32.72

36.26

37.08

37.78

37.91

37.94

38.46

38.16

38.40

38.61

38.71

38.66

38.77

38.61

38.18

36.00

Front half 296.31s · back half 305.94s

100 Backstroke LCM 1:21.32

39.07

42.25

Front half 39.07s · back half 42.25s

100 Breaststroke LCM 1:33.15

43.48

49.67

Front half 43.48s · back half 49.67s

100 Butterfly LCM 1:09.66 split/total mismatch

31.89

5.88

Front half 31.89s · back half 37.77s

200 Butterfly LCM 2:34.28 RT 0.66s

33.77

37.71

41.04

41.76

Front half 71.48s · back half 82.80s

400 Individual Medley LCM 5:39.95 RT 0.66s

33.88

38.96

45.88

44.10

50.52

50.77

38.74

37.10

Front half 162.82s · back half 177.13s

Reaction time

fastest 0.66s average 0.663s slowest 0.67s 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 25.71 1 swim

100 Freestyle SCY 56.16 2 swims

50 Butterfly SCY 27.48 1 swim

100 Butterfly SCY 59.46 1 swim

200 Butterfly SCY 2:11.62 2 swims

400 Individual Medley SCY 4:48.07 2 swims

50 Freestyle LCM 29.70 2 swims

100 Freestyle LCM 1:03.74 3 swims

200 Freestyle LCM 2:17.51 1 swim

400 Freestyle LCM 4:52.74 1 swim

800 Freestyle LCM 10:02.25 1 swim

50 Backstroke LCM 37.72 1 swim

100 Backstroke LCM 1:21.32 1 swim

50 Breaststroke LCM 41.15 1 swim

100 Breaststroke LCM 1:33.15 1 swim

100 Butterfly LCM 1:09.66 3 swims

200 Butterfly LCM 2:34.28 5 swims

400 Individual Medley LCM 5:39.95 1 swim