Justin Chamberlain

Mage 19MTUTOASDATUN-OAUNATUOAUSDAT

422 plausible swims · 87 meets · 2016-06-15 → 2026-07-02

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 22.89 2024-07-02 2024 OA Summer Splash venue
100 Freestyle SCY 49.40 2024-04-05 2024 Western Zone SCY Senior Zones fast pool
200 Freestyle SCY 2:02.34 2021-03-03 2021 UT SC AG Champs
500 Freestyle SCY 4:56.63 2024-07-03 2024 OA Summer Splash venue
50 Backstroke SCY 25.91 2026-07-01 2026 OA Summer Splash venue
100 Backstroke SCY 55.05 2025-06-23 2025 OA Summer Splash venue
200 Backstroke SCY 2:00.51 2024-07-02 2024 OA Summer Splash venue
50 Breaststroke SCY 37.52 2020-02-07 2020 UT UTES Friday Night Lights slow pool
100 Breaststroke SCY 57.77 2024-02-23 2024 UT 5A State OBS fast pool
200 Breaststroke SCY 2:07.99 2024-04-05 2024 Western Zone SCY Senior Zones fast pool
50 Butterfly SCY 25.96 2023-06-30 2023 Olympus Aquatics Summer Splash venue
100 Butterfly SCY 53.55 2024-07-01 2024 OA Summer Splash venue
200 Butterfly SCY 2:05.64 2023-11-11 2023 OA Thanksgiving Turkey Meet venue
100 Individual Medley SCY 56.33 2026-07-01 2026 OA Summer Splash venue
200 Individual Medley SCY 1:57.66 2024-02-23 2024 UT 5A State OBS fast pool
400 Individual Medley SCY 4:13.66 2024-04-04 2024 Western Zone SCY Senior Zones fast pool
50 Freestyle LCM 25.86 2024-07-18 2024 LC SR CHAMPS venue
100 Freestyle LCM 57.44 2025-07-10 2025 Utah Swimming LC Senior Championships
200 Freestyle LCM 2:12.93 2024-06-13 2024 UT CHAT INVITATIONAL venue
50 Backstroke LCM 33.06 2023-06-24 Tsunami Summer Spectacular venue
100 Backstroke LCM 1:07.77 2024-06-14 2024 UT CHAT INVITATIONAL venue
200 Backstroke LCM 2:43.09 2022-06-18 2022 UT CHAT INVITATIONAL venue
50 Breaststroke LCM 30.42 2025-07-12 2025 Utah Swimming LC Senior Championships venue
100 Breaststroke LCM 1:06.98 2024-07-19 2024 LC SR CHAMPS venue
200 Breaststroke LCM 2:26.24 2025-07-10 2025 Utah Swimming LC Senior Championships
50 Butterfly LCM 28.78 2024-05-21 Kearns LC Classic venue
100 Butterfly LCM 1:00.76 2024-07-19 2024 LC SR CHAMPS venue
200 Butterfly LCM 2:29.94 2022-07-19 2022 UT LC Champs venue
200 Individual Medley LCM 2:14.64 2024-07-18 2024 LC SR CHAMPS venue
400 Individual Medley LCM 5:11.50 2023-07-21 2023 UT LC Senior State Championship 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

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 23.51 flying 200 Medley Relay (leg 4) 2019-12-21 2019 UT SDAT Grand Challenge
200 Freestyle SCY 2:02.84 flying 800 Free Relay (leg 3) 2021-02-23 2021 UT SDAT Last Chance
50 Breaststroke SCY 30.79 flying 200 Medley Relay (leg 2) 2021-03-05 2021 UT SC AG Champs
50 Freestyle LCM 25.06 flying 200 Free Relay (leg 4) 2025-07-10 2025 Utah Swimming LC Senior Championships
50 Freestyle LCM 31.91 flying 200 Medley Relay (leg 4) 2019-07-18 2019 UT LC Champs
100 Freestyle LCM 1:13.51 flying 400 Free Relay (leg 3) 2019-07-20 2019 UT LC Champs
100 Breaststroke LCM 1:09.86 flying 400 Medley Relay (leg 2) 2022-07-29 Finals - Western Zone Senior Champs

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 49.40

23.58
25.82

Front half 23.58s · back half 25.82s

500 Freestyle SCY 4:56.63

26.91
30.07
30.23
30.41
30.19
30.28
30.23
30.24
29.44
28.63

Front half 147.81s · back half 148.82s

100 Backstroke SCY 55.05

26.53
28.52

Front half 26.53s · back half 28.52s

200 Backstroke SCY 2:00.51

28.44
30.72
30.52
30.83

Front half 59.16s · back half 61.35s

100 Breaststroke SCY 57.77 RT 0.39s

26.89
30.88

Front half 26.89s · back half 30.88s

200 Breaststroke SCY 2:07.99

28.39
31.57
33.77
34.26

Front half 59.96s · back half 68.03s

100 Butterfly SCY 53.55

24.82
28.73

Front half 24.82s · back half 28.73s

200 Butterfly SCY 2:05.64

27.66
32.11
32.71
33.16

Front half 59.77s · back half 65.87s

100 Individual Medley SCY 56.33

26.93
29.40

Front half 26.93s · back half 29.40s

200 Individual Medley SCY 1:57.66 RT 0.39s

24.93
30.22
33.46
29.05

Front half 55.15s · back half 62.51s

400 Individual Medley SCY 4:13.66

26.17
30.63
32.05
31.54
36.83
35.95
29.97
30.52

Front half 120.39s · back half 133.27s

200 Freestyle LCM 2:12.93

30.82
32.99
34.39
34.73

Front half 63.81s · back half 69.12s

100 Backstroke LCM 1:07.77

32.97
34.80

Front half 32.97s · back half 34.80s

200 Backstroke LCM 2:43.09

38.41
40.43
43.26
40.99

Front half 78.84s · back half 84.25s

100 Breaststroke LCM 1:06.98

31.85
35.13

Front half 31.85s · back half 35.13s

100 Butterfly LCM 1:00.76

28.04
32.72

Front half 28.04s · back half 32.72s

200 Butterfly LCM 2:29.94

69.68
80.26

Front half 69.68s · back half 80.26s

200 Individual Medley LCM 2:14.64

28.61
35.44
38.85
31.74

Front half 64.05s · back half 70.59s

400 Individual Medley LCM 5:11.50

31.54
37.81
41.24
42.42
42.31
44.56
35.80
35.82

Front half 153.01s · back half 158.49s

Reaction time

fastest 0.39s average 0.652s slowest 0.75s 11 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 22.89 39 swims
100 Freestyle SCY 49.40 27 swims
200 Freestyle SCY 2:02.34 9 swims
500 Freestyle SCY 4:56.63 3 swims
50 Backstroke SCY 25.91 4 swims
100 Backstroke SCY 55.05 5 swims
200 Backstroke SCY 2:00.51 9 swims
50 Breaststroke SCY 37.52 3 swims
100 Breaststroke SCY 57.77 50 swims
200 Breaststroke SCY 2:07.99 38 swims
50 Butterfly SCY 25.96 1 swim
100 Butterfly SCY 53.55 1 swim
200 Butterfly SCY 2:05.64 2 swims
100 Individual Medley SCY 56.33 4 swims
200 Individual Medley SCY 1:57.66 28 swims
400 Individual Medley SCY 4:13.66 14 swims
50 Freestyle LCM 25.86 21 swims
100 Freestyle LCM 57.44 22 swims
200 Freestyle LCM 2:12.93 8 swims
50 Backstroke LCM 33.06 3 swims
100 Backstroke LCM 1:07.77 5 swims
200 Backstroke LCM 2:43.09 1 swim
50 Breaststroke LCM 30.42 7 swims
100 Breaststroke LCM 1:06.98 35 swims
200 Breaststroke LCM 2:26.24 33 swims
50 Butterfly LCM 28.78 2 swims
100 Butterfly LCM 1:00.76 10 swims
200 Butterfly LCM 2:29.94 4 swims
200 Individual Medley LCM 2:14.64 25 swims
400 Individual Medley LCM 5:11.50 9 swims