Mackenzie Hearrin
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.96 | AAA+0.77s to AAAA | 2026-04-02 | 2026 YMCA Short Course Nationals fast pool |
| 100 Freestyle | SCY | 56.41 | AA+1.32s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 200 Freestyle | SCY | 2:01.71 | AA+2.82s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 500 Freestyle | SCY | 5:40.39 | A+5.10s to AA | 2025-01-31 | 2025 CT CDOG January-February Invite slow pool |
| 1000 Freestyle | SCY | 11:02.25 | AA+2.36s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 1650 Freestyle | SCY | 18:31.54 | AAA+45.85s to AAAA | 2024-12-12 | 2024 NE CRA Winter Invitational |
| 50 Backstroke | SCY | 28.67 | AA+0.48s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 100 Backstroke | SCY | 1:02.26 | AA+2.57s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 200 Backstroke | SCY | 2:10.05 | AA+0.56s to AAA | 2025-12-11 | 2025 NE CRA Winter Invitational |
| 50 Breaststroke | SCY | 31.42 | AAA+0.03s to AAAA | 2024-12-12 | 2024 NE CRA Winter Invitational |
| 100 Breaststroke | SCY | 1:04.77 | AAAA | 2026-04-03 | 2026 YMCA Short Course Nationals fast pool |
| 200 Breaststroke | SCY | 2:22.39 | AAA+1.20s to AAAA | 2026-03-31 | 2026 YMCA Short Course Nationals fast pool |
| 50 Butterfly | SCY | 29.48 | A+0.49s to AA | 2025-02-01 | 2025 CT CDOG January-February Invite slow pool |
| 100 Individual Medley | SCY | 1:00.55 | 2024-12-12 | 2024 NE CRA Winter Invitational | |
| 200 Individual Medley | SCY | 2:07.79 | AAA+1.10s to AAAA | 2026-04-02 | 2026 YMCA Short Course Nationals fast pool |
| 400 Individual Medley | SCY | 4:50.30 | AA+5.21s to AAA | 2024-12-12 | 2024 NE CRA Winter Invitational |
| 50 Freestyle | LCM | 33.45 | BB+1.86s to A | 2023-06-27 | CT NCA/CAC LCM June Meet |
| 100 Freestyle | LCM | 1:14.77 | B+0.98s to BB | 2023-06-03 | CT CDOG LCM June Meet |
| 200 Freestyle | LCM | 2:50.34 | B+10.15s to BB | 2023-06-27 | CT NCA/CAC LCM June Meet |
| 400 Freestyle | LCM | 5:23.35 | BB+12.26s to A | 2024-05-17 | 051724what results |
| 50 Backstroke | LCM | 42.67 | +0.38s to B | 2023-06-27 | CT NCA/CAC LCM June Meet |
| 100 Breaststroke | LCM | 1:18.21 | AAA+3.12s to AAAA | 2024-08-07 | 2024 EZ LC Age Group Championship venue |
| 200 Breaststroke | LCM | 2:50.23 | AAA+7.64s to AAAA | 2024-08-10 | 2024 EZ LC Age Group Championship venue |
| 200 Individual Medley | LCM | 3:03.17 | B+2.58s to BB | 2023-06-27 | CT NCA/CAC LCM June Meet |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | 24.06 | flying | 200 Free Relay (leg 2) | 2026-04-01 | 2026 YMCA Short Course Nationals |
| 100 Freestyle | SCY | 53.10 | flying | 400 Free Relay (leg 2) | 2026-04-03 | 2026 YMCA Short Course Nationals |
| 200 Freestyle | SCY | 1:56.55 | flying | 800 Free Relay (leg 2) | 2026-03-30 | 2026 YMCA Short Course Nationals |
| 50 Breaststroke | SCY | 29.01 | flying | 200 Medley Relay (leg 2) | 2026-03-31 | 2026 YMCA Short Course Nationals |
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 15-16 · SCY
4146 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:40.39 | 690 |
| 200 BK SCY | 2:10.05 | 819 |
| 200 BR SCY | 2:22.39 | 940 |
| 200 IM SCY | 2:07.79 | 926 |
| 400 IM SCY | 4:50.30 | 771 |
| 200 FL SCY | — | 0 |
IMR 15-16 · SCY
3418 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:01.71 | 774 |
| 100 BK SCY | 1:02.26 | 731 |
| 100 BR SCY | 1:04.77 | 987 |
| 200 IM SCY | 2:07.79 | 926 |
| 100 FL SCY | — | 0 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 56.41 split/total mismatch
Front half 27.55s · back half 28.86s
200 Freestyle SCY 2:01.71 split/total mismatch
500 Freestyle SCY 5:40.39
Front half 170.98s · back half 169.41s
1000 Freestyle SCY 11:02.25 split/total mismatch
1650 Freestyle SCY 18:31.54 split/total mismatch
100 Backstroke SCY 1:02.26 split/total mismatch
Front half 30.33s · back half 31.93s
200 Backstroke SCY 2:10.05 split/total mismatch
100 Breaststroke SCY 1:04.77 RT 0.68s
Front half 30.33s · back half 34.44s
200 Breaststroke SCY 2:22.39 RT 0.72s
Front half 67.48s · back half 74.91s
100 Individual Medley SCY 1:00.55 split/total mismatch
Front half 28.75s · back half 31.80s
200 Individual Medley SCY 2:07.79 RT 0.75s
Front half 58.48s · back half 69.31s
400 Individual Medley SCY 4:50.30 split/total mismatch
100 Freestyle LCM 1:14.77 split/total mismatch
400 Freestyle LCM 5:23.35 split/total mismatch
100 Breaststroke LCM 1:18.21
Front half 36.69s · back half 41.52s
200 Breaststroke LCM 2:50.23
Front half 82.88s · back half 87.35s
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.