Sybil Williamson
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.23 | 2024-07-16 | 2024 WMSL Summer A Championship | |
| 100 Freestyle | SCY | 56.53 | 2025-01-26 | 2025 MLA Big Lake venue | |
| 200 Freestyle | SCY | 2:09.30 | 2025-02-22 | 2025 Lake Michigan Regional Meet venue | |
| 500 Freestyle | SCY | 6:13.11 | 2025-01-05 | 2025 JAWS New Years Classic venue | |
| 50 Backstroke | SCY | 25.97 | 2024-11-24 | 2024 NKAT Fall Frenzy - Day After Meet | |
| 100 Backstroke | SCY | 1:04.85 | 2025-03-23 | 2025 ULTRA Championship Meet fast pool | |
| 200 Backstroke | SCY | 2:23.07 | 2025-01-26 | 2025 MLA Big Lake venue | |
| 100 Breaststroke | SCY | 1:09.00 | 2025-05-17 | 2025 IroNKAT Challenge | |
| 50 Butterfly | SCY | 28.37 | 2025-03-23 | 2025 ULTRA Championship Meet fast pool | |
| 100 Butterfly | SCY | 1:04.34 | 2025-03-22 | 2025 ULTRA Championship Meet fast pool | |
| 200 Individual Medley | SCY | 2:29.88 | 2025-01-26 | 2025 MLA Big Lake venue | |
| 50 Freestyle | LCM | 26.09 | 2025-07-25 | 2025 LC ULTRA Championship Meet | |
| 100 Freestyle | LCM | 1:06.21 | 2024-07-13 | 2024 West Michigan Classic venue | |
| 200 Freestyle | LCM | 2:31.71 | 2024-07-13 | 2024 West Michigan Classic venue | |
| 400 Freestyle | LCM | 5:08.47 | 2024-07-13 | 2024 West Michigan Classic | |
| 800 Freestyle | LCM | 11:42.77 | 2024-06-14 | JAWS Sun & Fun | |
| 50 Backstroke | LCM | 36.78 | 2025-07-25 | 2025 LC ULTRA Championship Meet venue | |
| 100 Backstroke | LCM | 1:19.18 | 2024-07-13 | 2024 West Michigan Classic venue | |
| 200 Backstroke | LCM | 2:53.41 | 2024-07-14 | 2024 West Michigan Classic venue | |
| 50 Butterfly | LCM | 35.67 | 2025-06-13 | 2025 JAWS Sun & Fun venue | |
| 100 Butterfly | LCM | 1:25.17 | 2024-06-15 | JAWS Sun & Fun slow pool | |
| 200 Individual Medley | LCM | 3:02.32 | 2025-06-08 | MLA Big Red Challenge 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 | 25.65 | flat | 200 Free Relay | 2025-03-23 | 2025 ULTRA Championship Meet |
| 50 Freestyle | SCY | 25.28 | flying | 200 Medley Relay (leg 4) | 2025-03-23 | 2025 ULTRA Championship Meet |
| 50 Freestyle | SCY | 24.84 | flying | 200 Free Relay (leg 4) | 2025-11-22 | 2025 MHSAA Division 3 Girls State Champs |
| 100 Freestyle | SCY | 56.24 | flat | 400 Free Relay | 2025-10-18 | 2025 HS Girls MISCA Meet |
| 100 Freestyle | SCY | 55.78 | flying | 400 Free Relay (leg 4) | 2025-11-22 | 2025 MHSAA Division 3 Girls State Champs |
| 50 Backstroke | SCY | 30.29 | flat | 200 Medley Relay | 2024-07-17 | 2024 WMSL Summer A Championship |
| 50 Butterfly | SCY | 28.37 | flying | 200 Medley Relay (leg 3) | 2025-10-18 | 2025 HS Girls MISCA Meet |
| 100 Freestyle | LCM | 1:07.22 | flying | 400 Free Relay (leg 3) | 2025-07-25 | 2025 LC ULTRA Championship Meet |
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 56.53
Front half 27.11s · back half 29.42s
200 Freestyle SCY 2:09.30
Front half 61.43s · back half 67.87s
500 Freestyle SCY 6:13.11
Front half 181.75s · back half 191.36s
100 Backstroke SCY 1:04.85
Front half 30.37s · back half 34.48s
200 Backstroke SCY 2:23.07
Front half 68.09s · back half 74.98s
100 Butterfly SCY 1:04.34
Front half 30.09s · back half 34.25s
200 Individual Medley SCY 2:29.88
Front half 68.03s · back half 81.85s
100 Freestyle LCM 1:06.21
Front half 31.16s · back half 35.05s
200 Freestyle LCM 2:31.71
Front half 73.63s · back half 78.08s
100 Backstroke LCM 1:19.18
Front half 37.57s · back half 41.61s
200 Backstroke LCM 2:53.41 RT 0.70s
Front half 84.61s · back half 88.80s
100 Butterfly LCM 1:25.17
Front half 38.53s · back half 46.64s
200 Individual Medley LCM 3:02.32
Front half 85.28s · back half 97.04s
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.