swimSandra Birkhoff
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 27.81 | BB+0.42s to A | 2025-02-28 | 2025 Gulf 13 & Over Champs (PEAK) |
| 100 Freestyle | SCY | 59.75 | BB+0.26s to A | 2025-01-11 | 2025 Tracey Harper-Santiago Memorial Meet venue |
| 200 Freestyle | SCY | 2:08.59 | BB+0.50s to A | 2025-03-01 | 2025 Gulf 13 & Over Champs (PEAK) fast pool |
| 500 Freestyle | SCY | 5:24.27 | AA+7.88s to AAA | 2025-02-28 | 2025 Gulf 13 & Over Champs (PEAK) |
| 50 Backstroke | SCY | 1:10.11 | +34.82s to B | 2024-03-01 | 2024 Gulf 13 & Over Champs (SHRK) |
| 100 Backstroke | SCY | 1:04.77 | BB+0.48s to A | 2026-01-09 | 2026 Tracey Harper-Santiago Memorial Meet |
| 200 Backstroke | SCY | 2:23.44 | BB+4.15s to A | 2025-02-28 | 2025 Gulf 13 & Over Champs (PEAK) |
| 100 Breaststroke | SCY | 1:18.52 | BB+4.33s to A | 2024-12-06 | 2024 Gulf Southern Senior Championships venue |
| 100 Butterfly | SCY | 1:11.02 | B+1.63s to BB | 2025-03-02 | 2025 Gulf 13 & Over Champs (PEAK) fast pool |
| 200 Individual Medley | SCY | 2:28.94 | BB+5.55s to A | 2024-12-08 | 2024 Gulf Southern Senior Championships venue |
| 400 Individual Medley | SCY | 5:18.43 | BB+11.44s to A | 2024-10-18 | 2024 FCST Oct Tri Meet |
| 50 Freestyle | LCM | 31.80 | BB+0.61s to A | 2024-06-23 | 2024 ST AAAA NS George Block Invite venue |
| 100 Freestyle | LCM | 1:08.59 | BB+1.30s to A | 2024-07-14 | 2024 Long Course Gulf Age Group Championships venue |
| 200 Freestyle | LCM | 2:31.67 | BB+6.38s to A | 2024-07-13 | 2024 Long Course Gulf Age Group Championships venue |
| 400 Freestyle | LCM | 5:22.58 | BB+14.89s to A | 2025-04-12 | 2025 DADS April Intrasquad |
| 100 Backstroke | LCM | 1:20.97 | BB+5.98s to A | 2024-06-22 | 2024 ST AAAA NS George Block Invite venue |
| 200 Backstroke | LCM | 2:50.43 | BB+9.44s to A | 2024-07-14 | 2024 Long Course Gulf Age Group Championships venue |
| 50 Breaststroke | LCM | 2:54.17 | +127.28s to B | 2024-06-20 | 2024 ST AAAA NS George Block Invite |
| 100 Breaststroke | LCM | 1:29.04 | BB+3.95s to A | 2024-06-20 | 2024 ST AAAA NS George Block Invite |
| 200 Breaststroke | LCM | 3:16.81 | BB+14.42s to A | 2024-06-21 | 2024 ST AAAA NS George Block Invite venue |
| 200 Individual Medley | LCM | 2:49.77 | BB+5.38s to A | 2024-07-12 | 2024 Long Course Gulf Age Group Championships venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 16.
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.
IMX / IMR
IMX 15-16 · SCY
2577 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:24.27 | 798 |
| 200 BK SCY | 2:23.44 | 610 |
| 200 IM SCY | 2:28.94 | 585 |
| 400 IM SCY | 5:18.43 | 584 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
IMR 15-16 · SCY
2929 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:08.59 | 657 |
| 100 BK SCY | 1:04.77 | 649 |
| 100 BR SCY | 1:18.52 | 554 |
| 100 FL SCY | 1:11.02 | 484 |
| 200 IM SCY | 2:28.94 | 585 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 59.75
Front half 28.90s · back half 30.85s
200 Freestyle SCY 2:08.59
Front half 61.83s · back half 66.76s
100 Breaststroke SCY 1:18.52
Front half 36.58s · back half 41.94s
100 Butterfly SCY 1:11.02
Front half 32.45s · back half 38.57s
200 Individual Medley SCY 2:28.94
Front half 31.73s · back half 117.21s
200 Freestyle LCM 2:31.67
Front half 72.98s · back half 78.69s
100 Breaststroke LCM 1:29.04 split/total mismatch
Front half 38.40s · back half 50.64s
200 Breaststroke LCM 3:16.81
Front half 93.25s · back half 103.56s
200 Individual Medley LCM 2:49.77
Front half 80.53s · back half 89.24s
Progression
Faster times are higher. One card per event, all courses & history.