Jason Guo
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.02 | +1.63s to Sectionals | 2024-12-05 | 2024 Utah Swimming SC Senior Championshipfast pool |
| 100 Freestyle | SCY | 52.13 | +3.64s to Sectionals | 2026 UT 5A State OBSfast pool | |
| 200 Freestyle | SCY | 1:58.74 | +12.45s to Sectionals | 2024-11-15 | 2024 WVA PSC Dive N Dashvenue |
| 500 Freestyle | SCY | 6:20.10 | +92.71s to Sectionals | 2021-02-20 | 2021 UT WFFM Last Chancevenue |
| 1650 Freestyle | SCY | 21:23.37 | +279.38s to Sectionals | 2021-11-13 | 2021 UT WVA PSC Dive N Dashvenue |
| 25 Backstroke | SCY | 28.15 | 2026-01-01 | Crimson Aquatics | |
| 50 Backstroke | SCY | 29.25 | +7.76s to US Open | 2025-11-01 | Pirate Pentathlon - copiedvenue |
| 100 Backstroke | SCY | 1:04.26 | +9.77s to Sectionals | 2023-01-20 | Fish Bowl Classic 2023venue |
| 200 Backstroke | SCY | 2:17.81 | +19.22s to Sectionals | 2024-01-12 | WFFM Fish Bowl Classic 2024venue |
| 50 Breaststroke | SCY | 32.82 | +8.43s to US Open | 2025-09-18 | WFFM September Intersquadslow pool |
| 100 Breaststroke | SCY | 1:07.28 | +5.79s to Sectionals | 2025-12-05 | 2025 UT SC Senior Championshipsfast pool |
| 200 Breaststroke | SCY | 2:29.07 | +14.08s to Sectionals | 2025-12-04 | 2025 UT SC Senior Championshipsfast pool |
| 50 Butterfly | SCY | 25.06 | +3.87s to US Open | 2025-12-04 | 2025 UT SC Senior Championshipsfast pool |
| 100 Butterfly | SCY | 55.62 | +2.43s to Sectionals | 2025-01-31 | Region 6 OBSvenue |
| 200 Butterfly | SCY | 2:13.67 | +12.48s to Sectionals | 2023-12-02 | 2023-24 Utah Swimming SC Senior Championshipfast pool |
| 100 Individual Medley | SCY | 1:00.22 | 2025-09-18 | WFFM September Intersquadslow pool | |
| 200 Individual Medley | SCY | 2:07.48 | +8.09s to Sectionals | 2024-12-05 | 2024 Utah Swimming SC Senior Championshipfast pool |
| 400 Individual Medley | SCY | 4:51.34 | +36.25s to Sectionals | 2023-03-02 | 2023 UT SC Age Group Championshipvenue |
| 50 Freestyle | LCM | 28.00 | +2.51s to Sectionals | 2024-07-18 | 2024 LC SR CHAMPSvenue |
| 100 Freestyle | LCM | 1:02.50 | +7.01s to Sectionals | 2023-07-14 | 2023 UTAGS Championshipvenue |
| 200 Freestyle | LCM | 2:19.56 | +18.27s to Sectionals | 2025-06-19 | 2025 UT CHAT INVITATIONALvenue |
| 400 Freestyle | LCM | 5:17.50 | +59.91s to Sectionals | 2023-06-30 | WFFM Red, White and Black 2023venue |
| 50 Backstroke | LCM | 37.39 | +11.30s to US Open | 2021-07-09 | 2021 UT WFFM LC Last Chancevenue |
| 100 Backstroke | LCM | 1:19.05 | +17.06s to Sectionals | 2022-07-09 | 2022 UT WFFM Red, White, Blackvenue |
| 200 Backstroke | LCM | 2:51.41 | +36.62s to Sectionals | 2021-07-09 | 2021 UT WFFM LC Last Chancevenue |
| 50 Breaststroke | LCM | 36.48 | +7.29s to US Open | 2025-07-12 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 100 Breaststroke | LCM | 1:20.91 | +11.22s to Sectionals | 2025-07-11 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 200 Breaststroke | LCM | 2:59.80 | +27.21s to Sectionals | 2025-07-10 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 50 Butterfly | LCM | 29.36 | +4.47s to US Open | 2025-07-10 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 100 Butterfly | LCM | 1:07.21 | +7.02s to Sectionals | 2025-07-12 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 200 Butterfly | LCM | 2:39.13 | +22.84s to Sectionals | 2025-07-11 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 200 Individual Medley | LCM | 2:31.44 | +15.25s to Sectionals | 2025-07-12 | 2025 Utah Swimming LC Senior Championshipsvenue |
| 400 Individual Medley | LCM | 5:37.51 | +47.62s to Sectionals | 2023-07-13 | 2023 UTAGS Championshipvenue |
National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.
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 | 23.85 | flat | 200 Free Relay | 2025-12-04 | 2025 UT SC Senior Championships |
| 50 Freestyle | SCY | 23.34 | flying | 200 Free Relay (leg 3) | 2025-12-05 | 2025 UT SC Senior Championships |
| 100 Freestyle | SCY | 53.26 | flying | 400 Free Relay (leg 2) | 2023-03-04 | 2023 UT SC Age Group Championship |
| 50 Breaststroke | SCY | 30.27 | flying | 200 Medley Relay (leg 2) | 2025-12-04 | 2025 UT SC Senior Championships |
| 50 Butterfly | SCY | 24.86 | flying | 200 Medley Relay (leg 3) | 2024-12-06 | 2024 Utah Swimming SC Senior Championship |
| 50 Freestyle | LCM | 27.61 | flat | 200 Free Relay | 2023-07-13 | 2023 UTAGS Championship |
| 50 Freestyle | LCM | 27.77 | flying | 200 Free Relay (leg 4) | 2022-07-21 | 2022 UT LC Champs |
| 100 Freestyle | LCM | 1:07.06 | flat | 400 Free Relay | 2021-07-22 | 2021 UT LC Champs |
| 100 Freestyle | LCM | 1:01.29 | flying | 400 Free Relay (leg 2) | 2023-07-15 | 2023 UTAGS Championship |
| 50 Breaststroke | LCM | 39.54 | flying | 200 Medley Relay (leg 2) | 2021-07-20 | 2021 UT LC Champs |
| 50 Butterfly | LCM | 29.61 | flying | 200 Medley Relay (leg 3) | 2023-07-14 | 2023 UTAGS Championship |
| 100 Butterfly | LCM | 3:41.86 | flying | 400 Medley Relay (leg 3) | 2022-07-19 | 2022 UT LC 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
200 Freestyle SCY 1:58.74
Front half 56.47s · back half 62.27s
500 Freestyle SCY 6:20.10
1650 Freestyle SCY 21:23.37
100 Backstroke SCY 1:04.26
Front half 31.22s · back half 33.04s
200 Backstroke SCY 2:17.81
Front half 66.58s · back half 71.23s
100 Breaststroke SCY 1:07.28
Front half 31.62s · back half 35.66s
200 Breaststroke SCY 2:29.07
Front half 71.27s · back half 77.80s
100 Butterfly SCY 55.62
Front half 25.87s · back half 29.75s
200 Butterfly SCY 2:13.67
Front half 60.63s · back half 73.04s
100 Individual Medley SCY 1:00.22
Front half 28.06s · back half 32.16s
200 Individual Medley SCY 2:07.48
Front half 58.75s · back half 68.73s
400 Individual Medley SCY 4:51.34
Front half 137.82s · back half 153.52s
100 Freestyle LCM 1:02.50
Front half 30.23s · back half 32.27s
200 Freestyle LCM 2:19.56
Front half 66.35s · back half 73.21s
400 Freestyle LCM 5:17.50
Front half 154.94s · back half 162.56s
100 Backstroke LCM 1:19.05
Front half 37.99s · back half 41.06s
200 Backstroke LCM 2:51.41
Front half 84.64s · back half 86.77s
100 Breaststroke LCM 1:20.91
Front half 38.54s · back half 42.37s
200 Breaststroke LCM 2:59.80
Front half 85.90s · back half 93.90s
100 Butterfly LCM 1:07.21
Front half 29.80s · back half 37.41s
200 Butterfly LCM 2:39.13
Front half 70.99s · back half 88.14s
200 Individual Medley LCM 2:31.44
Front half 70.93s · back half 80.51s
400 Individual Medley LCM 5:37.51
Front half 161.13s · back half 176.38s
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.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.