Justin Chamberlain
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 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
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 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
Front half 23.58s · back half 25.82s
500 Freestyle SCY 4:56.63
Front half 147.81s · back half 148.82s
100 Backstroke SCY 55.05
Front half 26.53s · back half 28.52s
200 Backstroke SCY 2:00.51
Front half 59.16s · back half 61.35s
100 Breaststroke SCY 57.77 RT 0.39s
Front half 26.89s · back half 30.88s
200 Breaststroke SCY 2:07.99
Front half 59.96s · back half 68.03s
100 Butterfly SCY 53.55
Front half 24.82s · back half 28.73s
200 Butterfly SCY 2:05.64
Front half 59.77s · back half 65.87s
100 Individual Medley SCY 56.33
Front half 26.93s · back half 29.40s
200 Individual Medley SCY 1:57.66 RT 0.39s
Front half 55.15s · back half 62.51s
400 Individual Medley SCY 4:13.66
Front half 120.39s · back half 133.27s
200 Freestyle LCM 2:12.93
Front half 63.81s · back half 69.12s
100 Backstroke LCM 1:07.77
Front half 32.97s · back half 34.80s
200 Backstroke LCM 2:43.09
Front half 78.84s · back half 84.25s
100 Breaststroke LCM 1:06.98
Front half 31.85s · back half 35.13s
100 Butterfly LCM 1:00.76
Front half 28.04s · back half 32.72s
200 Butterfly LCM 2:29.94
Front half 69.68s · back half 80.26s
200 Individual Medley LCM 2:14.64
Front half 64.05s · back half 70.59s
400 Individual Medley LCM 5:11.50
Front half 153.01s · back half 158.49s
Reaction time
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.