swimLangston Duncan
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 20.53 | AAAA | 2024-02-24 | 2024 MD LSC Senior Champs venue |
| 100 Freestyle | SCY | 45.12 | AAAA | 2025-02-23 | 2025 Speedo MD LSC Senior Champs venue |
| 200 Freestyle | SCY | 1:43.86 | AAA+2.37s to AAAA | 2024-02-23 | 2024 MD LSC Senior Champs venue |
| 500 Freestyle | SCY | 4:51.94 | AA+3.35s to AAA | 2024-10-05 | 2024 Eagle Swim Team Senior Invite |
| 1000 Freestyle | SCY | 10:37.62 | A+5.63s to AA | 2023-11-11 | 2023 FSC & EST Distance Dual |
| 1650 Freestyle | SCY | 17:16.47 | AA+26.68s to AAA | 2023-11-11 | 2023 FSC & EST Distance Dual venue |
| 50 Backstroke | SCY | 39.63 | +8.44s to B | 2017-03-12 | 2017 MD Swimming Jr Championships venue |
| 100 Backstroke | SCY | 51.52 | AAA+1.43s to AAAA | 2025-02-20 | 2025 Speedo MD LSC Senior Champs |
| 200 Backstroke | SCY | 2:01.67 | A+1.68s to AA | 2024-12-28 | 2024 Speedo IMX Distance Challenge venue |
| 50 Breaststroke | SCY | 54.75 | +18.76s to B | 2017-01-07 | Mariner Winter Invitational venue |
| 100 Breaststroke | SCY | 1:20.08 | +4.59s to B | 2020-10-24 | MDSI Virtual Meet Series 20-21/006c venue |
| 200 Breaststroke | SCY | 2:20.29 | A+5.40s to AA | 2025-01-17 | 2025 Retriever Classic |
| 50 Butterfly | SCY | 22.20 | AAAA | 2024-02-25 | 2024 MD LSC Senior Champs venue |
| 100 Butterfly | SCY | 48.58 | AAAA | 2025-02-20 | 2025 Speedo MD LSC Senior Champs |
| 200 Butterfly | SCY | 1:52.43 | AAA+0.84s to AAAA | 2024-12-28 | 2024 Speedo IMX Distance Challenge venue |
| 100 Individual Medley | SCY | 57.78 | 2022-11-19 | 2022 NBAC Thanksgiving Meet fast pool | |
| 200 Individual Medley | SCY | 2:01.34 | AA+3.85s to AAA | 2023-12-29 | 2023 Speedo IMX Distance Challenge |
| 400 Individual Medley | SCY | 4:14.78 | AA+1.79s to AAA | 2024-10-05 | 2024 Eagle Swim Team Senior Invite |
| 50 Freestyle | LCM | 23.90 | AAAA | 2025-03-29 | 2025 Speedo Sectional Championship venue |
| 100 Freestyle | LCM | 53.07 | AAA+0.08s to AAAA | 2024-03-24 | 2024 Speedo Sectional Championship venue |
| 200 Freestyle | LCM | 2:02.93 | AA+0.74s to AAA | 2024-07-01 | KA Firecracker Classic Long Course A/BB/C Invitational |
| 400 Freestyle | LCM | 4:41.44 | A+9.05s to AA | 2023-01-15 | 2023 Fox Winter Long Course Challenge venue |
| 50 Backstroke | LCM | 27.42 | AAAA | 2024-07-01 | KA Firecracker Classic Long Course A/BB/C Invitational |
| 100 Backstroke | LCM | 1:01.34 | AAA+2.25s to AAAA | 2023-08-04 | 2023 Speedo Maryland Long Course Championship venue |
| 200 Backstroke | LCM | 2:20.80 | AA+6.01s to AAA | 2025-04-12 | 2025 EST Spring Into Long Course |
| 100 Breaststroke | LCM | 1:29.35 | +1.26s to B | 2021-07-11 | 2021 EST July Invitational venue |
| 50 Butterfly | LCM | 25.31 | AAAA | 2024-07-01 | KA Firecracker Classic Long Course A/BB/C Invitational |
| 100 Butterfly | LCM | 55.18 | AAAA | 2024-03-22 | 2024 Speedo Sectional Championship venue |
| 200 Butterfly | LCM | 2:24.38 | A+5.09s to AA | 2023-05-13 | 2023 Abby Seeger Memorial Invitational venue |
| 200 Individual Medley | LCM | 2:24.44 | A+2.05s to AA | 2023-07-08 | 2023 Sandbox Invitational venue |
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 | 20.81 | flying | 200 Free Relay (leg 4) | 2022-03-04 | 2022 MD LSC 14 & U CHAMPIONSHIPS |
| 50 Freestyle | SCY | 20.56 | flying | 200 Medley Relay (leg 4) | 2022-02-05 | 2022 MIAA A Swimming Championships |
| 100 Freestyle | SCY | 47.87 | flying | 400 Free Relay (leg 4) | 2022-03-06 | 2022 MD LSC 14 & U CHAMPIONSHIPS |
| 200 Freestyle | SCY | 1:49.43 | flying | 800 Free Relay (leg 2) | 2022-03-03 | 2022 MD LSC 14 & U CHAMPIONSHIPS |
| 100 Butterfly | SCY | 51.51 | flying | 400 Medley Relay (leg 3) | 2022-03-05 | 2022 MD LSC 14 & U CHAMPIONSHIPS |
| 100 Freestyle | LCM | 53.71 | flying | 400 Free Relay (leg 4) | 2022-08-05 | 2022 MD LSC LC Championships |
| 100 Butterfly | LCM | 56.17 | flying | 400 Medley Relay (leg 3) | 2022-08-06 | 2022 MD LSC LC Championships |
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 · SCY
4664 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 4:51.94 | 812 |
| 200 BK SCY | 2:01.67 | 697 |
| 200 BR SCY | 2:20.29 | 652 |
| 200 FL SCY | 1:52.43 | 931 |
| 200 IM SCY | 2:01.34 | 757 |
| 400 IM SCY | 4:14.78 | 815 |
IMR 17-18 · SCY
3880 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:43.86 | 897 |
| 100 BK SCY | 51.52 | 854 |
| 100 BR SCY | 1:20.08 | 341 |
| 100 FL SCY | 48.58 | 1031 |
| 200 IM SCY | 2:01.34 | 757 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 45.12
Front half 21.80s · back half 23.32s
200 Freestyle SCY 1:43.86
Front half 49.31s · back half 54.55s
1650 Freestyle SCY 17:16.47
200 Backstroke SCY 2:01.67
Front half 58.99s · back half 62.68s
100 Breaststroke SCY 1:20.08
Front half 38.21s · back half 41.87s
200 Butterfly SCY 1:52.43
Front half 52.32s · back half 60.11s
100 Individual Medley SCY 57.78
Front half 25.76s · back half 32.02s
100 Freestyle LCM 53.07
Front half 25.05s · back half 28.02s
200 Freestyle LCM 2:02.93 split/total mismatch
400 Freestyle LCM 4:41.44
Front half 139.46s · back half 141.98s
100 Backstroke LCM 1:01.34
Front half 29.29s · back half 32.05s
100 Breaststroke LCM 1:29.35
Front half 44.47s · back half 44.88s
100 Butterfly LCM 55.18
Front half 25.67s · back half 29.51s
200 Butterfly LCM 2:24.38
Front half 66.50s · back half 77.88s
200 Individual Medley LCM 2:24.44
Front half 66.13s · back half 78.31s
Progression
Faster times are higher. One card per event, all courses & history.