swimJacob Birkby
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 25.51 | +2.32s to Sectionals | 2022-12-02 | 2022 CO CSI Pioneer Openvenue |
| 100 Freestyle | SCY | 57.14 | +6.15s to Sectionals | 2022-10-23 | 2022 CO COSA Gian -Luc Jordan Inviteslow pool |
| 200 Freestyle | SCY | 2:07.19 | +15.40s to Sectionals | 2023-03-12 | 2023 CO Zone 5 Championshipsvenue |
| 500 Freestyle | SCY | 5:42.89 | +40.20s to Sectionals | 2023-01-21 | 2023 CO TOPS Colorado Openvenue |
| 50 Backstroke | SCY | 31.93 | +10.44s to US Open | 2021-02-01 | 2021 CO AP COSA 12&U Winter Seriesvenue |
| 100 Backstroke | SCY | 59.42 | +3.93s to Sectionals | 2022-12-03 | 2022 CO CSI Pioneer Openvenue |
| 200 Backstroke | SCY | 2:16.89 | +15.60s to Sectionals | 2022-10-23 | 2022 CO COSA Gian -Luc Jordan Inviteslow pool |
| 50 Breaststroke | SCY | 37.34 | +12.95s to US Open | 2021-01-30 | 2021 CO AP COSA 12&U Winter Seriesvenue |
| 100 Breaststroke | SCY | 1:11.77 | +8.58s to Sectionals | 2023-01-21 | 2023 CO TOPS Colorado Openvenue |
| 200 Breaststroke | SCY | 2:43.72 | +26.43s to Sectionals | 2022-10-22 | 2022 CO COSA Gian -Luc Jordan Inviteslow pool |
| 50 Butterfly | SCY | 30.35 | +9.16s to US Open | 2021-01-31 | 2021 CO AP COSA 12&U Winter Seriesvenue |
| 100 Butterfly | SCY | 59.24 | +4.05s to Sectionals | 2023-05-12 | 2023 CO OB CHSAA 4A State Championshipsvenue |
| 200 Butterfly | SCY | 2:35.19 | +31.80s to Sectionals | 2022-02-13 | 2022 CO COSA Valentine Openvenue |
| 100 Individual Medley | SCY | 1:14.17 | 2021-01-31 | 2021 CO AP COSA 12&U Winter Seriesvenue | |
| 200 Individual Medley | SCY | 2:17.93 | +13.94s to Sectionals | 2022-12-04 | 2022 CO CSI Pioneer Openvenue |
| 400 Individual Medley | SCY | 5:15.98 | +51.29s to Sectionals | 2022-03-04 | 2022 CO CSI14&U Silver Statevenue |
| 50 Freestyle | LCM | 30.84 | +3.85s to Sectionals | 2022-06-03 | 2022 CO COSA Friday Night Sprintvenue |
| 100 Freestyle | LCM | 1:08.15 | +9.16s to Sectionals | 2022-06-24 | 2022 CO ACES Summer Invitationalvenue |
| 200 Freestyle | LCM | 2:26.16 | +17.47s to Sectionals | 2022-06-24 | 2022 CO ACES Summer Invitationalvenue |
| 400 Freestyle | LCM | 5:10.24 | +35.85s to Sectionals | 2022-07-10 | 2022 CO Zone 5 Long Coursevenue |
| 100 Backstroke | LCM | 1:08.13 | +2.94s to Sectionals | 2022-07-23 | 2022 CO CSI Senior LC Championshipsvenue |
| 200 Backstroke | LCM | 2:30.75 | +9.26s to Sectionals | 2022-07-24 | 2022 CO CSI Senior LC Championshipsvenue |
| 100 Breaststroke | LCM | 1:29.55 | +15.85s to Sectionals | 2022-04-23 | 2022 CO Arena Catch Me If You Can Openvenue |
| 100 Butterfly | LCM | 1:07.53 | +4.44s to Sectionals | 2022-07-22 | 2022 CO CSI Senior LC Championshipsvenue |
| 200 Butterfly | LCM | 2:47.40 | +26.31s to Sectionals | 2022-07-10 | 2022 CO Zone 5 Long Coursevenue |
| 200 Individual Medley | LCM | 2:38.77 | +14.08s to Sectionals | 2022-07-10 | 2022 CO Zone 5 Long Coursevenue |
| 400 Individual Medley | LCM | 6:17.64 | +69.85s to Sectionals | 2022-05-28 | 2022 CO AFA/COSA LC Openslow pool |
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 | 27.84 | flat | 200 Free Relay | 2021-11-06 | 2021 CO COSA Mountain High Point Challenge |
| 50 Freestyle | SCY | 24.52 | flying | 200 Medley Relay (leg 4) | 2023-03-12 | 2023 CO Zone 5 Championships |
| 100 Freestyle | SCY | 57.73 | flying | 400 Free Relay (leg 3) | 2023-01-22 | 2023 CO TOPS Colorado Open |
| 50 Backstroke | SCY | 30.67 | flat | 200 Medley Relay | 2021-11-07 | 2021 CO COSA Mountain High Point Challenge |
| 100 Breaststroke | SCY | 1:10.77 | flying | 400 Medley Relay (leg 2) | 2021-09-25 | 2021 CO COSA Fall Relay Meet |
| 100 Butterfly | SCY | 1:02.54 | flying | 400 Medley Relay (leg 3) | 2023-01-21 | 2023 CO TOPS Colorado Open |
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 57.14
Front half 27.01s · back half 30.13s
200 Freestyle SCY 2:07.19
Front half 60.99s · back half 66.20s
500 Freestyle SCY 5:42.89
Front half 167.46s · back half 175.43s
100 Backstroke SCY 59.42
Front half 28.62s · back half 30.80s
200 Backstroke SCY 2:16.89
Front half 66.38s · back half 70.51s
100 Breaststroke SCY 1:11.77
Front half 32.30s · back half 39.47s
200 Breaststroke SCY 2:43.72
Front half 77.86s · back half 85.86s
100 Butterfly SCY 59.24
Front half 27.13s · back half 32.11s
200 Butterfly SCY 2:35.19
Front half 71.90s · back half 83.29s
100 Individual Medley SCY 1:14.17
Front half 33.92s · back half 40.25s
200 Individual Medley SCY 2:17.93
Front half 62.88s · back half 75.05s
400 Individual Medley SCY 5:15.98
Front half 155.56s · back half 160.42s
200 Freestyle LCM 2:26.16
Front half 70.85s · back half 75.31s
400 Freestyle LCM 5:10.24
Front half 152.90s · back half 157.34s
100 Backstroke LCM 1:08.13
Front half 33.04s · back half 35.09s
200 Backstroke LCM 2:30.75
Front half 73.80s · back half 76.95s
100 Butterfly LCM 1:07.53
Front half 30.94s · back half 36.59s
200 Butterfly LCM 2:47.40
Front half 77.74s · back half 89.66s
200 Individual Medley LCM 2:38.77
Front half 72.30s · back half 86.47s
400 Individual Medley LCM 6:17.64
Front half 182.92s · back half 194.72s
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.