swimBenjamin Pei
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 21.41 | AAA+0.32s to AAAA | 2025-11-09 | 2025 MN WOLF HOWL AT THE MOON INVITE venue |
| 100 Freestyle | SCY | 47.43 | AAA+1.34s to AAAA | 2025-02-02 | 2025 MN NSAC Winter Invite venue |
| 200 Freestyle | SCY | 1:40.63 | AAAA | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 500 Freestyle | SCY | 4:51.00 | AA+2.41s to AAA | 2025-02-14 | 2025 MN RSC President's Day Meet venue |
| 50 Backstroke | SCY | 25.18 | AA+0.59s to AAA | 2025-10-11 | 2025 MN AQJT 4th Annual Shootout Invite - cop venue |
| 100 Backstroke | SCY | 51.75 | AAA+1.66s to AAAA | 2025-11-22 | 2025 MN STRM 4th Annual Movember Invite venue |
| 200 Backstroke | SCY | 1:49.14 | AAAA | 2025-01-01 | 2025 Speedo Winter Junior Championships - West |
| 100 Breaststroke | SCY | 1:03.68 | A+1.59s to AA | 2025-02-15 | 2025 MN RSC President's Day Meet venue |
| 100 Butterfly | SCY | 53.25 | AA+1.26s to AAA | 2025-02-14 | 2025 MN RSC President's Day Meet venue |
| 200 Butterfly | SCY | 2:03.67 | A+1.48s to AA | 2025-02-15 | 2025 MN RSC President's Day Meet venue |
| 200 Individual Medley | SCY | 2:00.37 | AA+2.88s to AAA | 2024-12-22 | 2024 MN AQJT Holiday Invite venue |
| 50 Freestyle | LCM | 24.55 | AAA+0.16s to AAAA | 2026-06-12 | 2026 MN AQJT Aquajets Summer Spectacular venue |
| 100 Freestyle | LCM | 53.98 | AAA+0.99s to AAAA | 2025-07-23 | 2025 TYR FUTURES MADISON |
| 200 Freestyle | LCM | 1:57.00 | AAA+0.41s to AAAA | 2026-05-29 | 2026 MN WOLF HUFF N PUFF INVITE venue |
| 400 Freestyle | LCM | 4:09.96 | AAA+1.27s to AAAA | 2026-06-12 | 2026 MN AQJT Aquajets Summer Spectacular venue |
| 50 Backstroke | LCM | 28.83 | AAA+0.84s to AAAA | 2025-06-13 | 2025 MN NSAC Summer Slam Invite venue |
| 100 Backstroke | LCM | 1:00.56 | AAA+1.47s to AAAA | 2026-06-14 | 2026 MN AQJT Aquajets Summer Spectacular venue |
| 200 Backstroke | LCM | 2:07.99 | AAAA | 2025-07-23 | 2025 TYR FUTURES MADISON |
| 100 Breaststroke | LCM | 1:13.83 | A+1.44s to AA | 2025-06-15 | 2025 MN NSAC Summer Slam Invite venue |
| 100 Butterfly | LCM | 59.94 | AA+0.25s to AAA | 2026-05-30 | 2026 MN WOLF HUFF N PUFF INVITE venue |
| 200 Individual Medley | LCM | 2:13.40 | AAA+3.41s to AAAA | 2025-06-01 | 2025 MN WOLF HUFF N PUFF INVITE venue |
| 400 Individual Medley | LCM | 4:46.11 | AAA+7.02s to AAAA | 2026-06-27 | 2026 STAR Summer Splash Invite fast pool |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 21.25 | flying | 200 Free Relay (leg 2) | 2025-12-12 | 2025 West Speedo Winter Juniors |
| 50 Freestyle | SCY | 21.68 | flying | 200 Medley Relay (leg 4) | 2025-11-22 | 2025 MN STRM 4th Annual Movember Invite |
| 100 Freestyle | SCY | 46.01 | flying | 400 Free Relay (leg 2) | 2025-12-13 | 2025 West Speedo Winter Juniors |
| 200 Freestyle | LCM | 1:57.58 | flying | 800 Free Relay (leg 2) | 2025-07-31 | 2025 ND DRGN MN Senior LC State Championship |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 17-18 · LCM
3712 points (4/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:09.96 | 940 |
| 200 BK LCM | 2:07.99 | 974 |
| 200 IM LCM | 2:13.40 | 904 |
| 400 IM LCM | 4:46.11 | 894 |
| 200 BR LCM | — | 0 |
| 200 FL LCM | — | 0 |
IMR 17-18 · LCM
4232 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 1:57.00 | 941 |
| 100 BK LCM | 1:00.56 | 887 |
| 100 BR LCM | 1:13.83 | 685 |
| 100 FL LCM | 59.94 | 815 |
| 200 IM LCM | 2:13.40 | 904 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 47.43
Front half 22.80s · back half 24.63s
500 Freestyle SCY 4:51.00
Front half 141.31s · back half 149.69s
100 Backstroke SCY 51.75 RT 0.63s
Front half 24.97s · back half 26.78s
100 Breaststroke SCY 1:03.68
Front half 30.23s · back half 33.45s
100 Butterfly SCY 53.25
Front half 24.70s · back half 28.55s
200 Butterfly SCY 2:03.67
Front half 58.69s · back half 64.98s
200 Individual Medley SCY 2:00.37
Front half 54.59s · back half 65.78s
100 Freestyle LCM 53.98 split/total mismatch
Front half 25.76s · back half 28.22s
200 Freestyle LCM 1:57.00
Front half 57.71s · back half 59.29s
400 Freestyle LCM 4:09.96
Front half 124.07s · back half 125.89s
100 Backstroke LCM 1:00.56
Front half 29.20s · back half 31.36s
200 Backstroke LCM 2:07.99 split/total mismatch
100 Breaststroke LCM 1:13.83
Front half 34.46s · back half 39.37s
100 Butterfly LCM 59.94
Front half 28.37s · back half 31.57s
200 Individual Medley LCM 2:13.40
Front half 61.32s · back half 72.08s
400 Individual Medley LCM 4:46.11
Front half 135.05s · back half 151.06s
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.