swimMark Heffern
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.36 | AA+0.67s to AAA·Sectionals ✓+1.07s to Futures | 2023-03-26 | 2023 Four Corners Speedo Sectionals - Austinvenue |
| 100 Freestyle | SCY | 45.36 | AAAA·Futures ✓+0.47s to Winter JNs | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel -fast pool |
| 200 Freestyle | SCY | 1:38.01 | AAAA·Winter JNs ✓+0.42s to Jr Nationals | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel |
| 100 Breaststroke | SCY | 56.75 | AAA+0.56s to AAAA·Futures ✓+1.26s to Winter JNs | 2026-03-19 | 2026 Western Zone Short Course Senior Champ |
| 100 Butterfly | SCY | 48.80 | AAAA·Futures ✓+0.11s to Winter JNs | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel |
| 200 Butterfly | SCY | 1:48.07 | AAAA·Winter JNs ✓+0.18s to Jr Nationals | 2025-12-13 | 2025 West Speedo Winter Juniorsvenue |
| 200 Individual Medley | SCY | 1:48.81 | AAAA·Winter JNs ✓+0.32s to Jr Nationals | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel |
| 400 Individual Medley | SCY | 3:54.57 | AAAA·Winter JNs ✓+1.88s to Jr Nationals | 2025-12-12 | 2025 West Speedo Winter Juniorsvenue |
| 100 Freestyle | LCM | 52.89 | AAA+0.20s to AAAA·Futures ✓+0.30s to Winter JNs | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 200 Freestyle | LCM | 2:02.82 | AA+2.13s to AAA·Sectionals ✓+5.03s to Futures | 2024-05-25 | 13th Annual Speedo Arizona Invitationalvenue |
| 400 Freestyle | LCM | 4:19.03 | AA+1.74s to AAA·Sectionals ✓+9.04s to Futures | 2024-05-24 | 13th Annual Speedo Arizona Invitationalvenue |
| 800 Freestyle | LCM | 9:27.23 | A+3.94s to AA·Sectionals ✓+46.54s to Futures | 2024-05-27 | 13th Annual Speedo Arizona Invitationalvenue |
| 1500 Freestyle | LCM | 17:47.87 | AA+36.88s to AAA·Sectionals ✓+68.88s to Futures | 2024-05-27 | 13th Annual Speedo Arizona Invitationalvenue |
| 100 Backstroke | LCM | 1:02.26 | AA+0.87s to AAA·Sectionals ✓+1.67s to Futures | 2024-05-26 | 13th Annual Speedo Arizona Invitationalvenue |
| 50 Butterfly | LCM | 25.76 | AAAA·Futures ✓+0.37s to Jr Nationals | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 100 Butterfly | LCM | 56.06 | AAAA·Winter JNs ✓+0.17s to Jr Nationals | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 200 Butterfly | LCM | 2:05.22 | AAAA·Winter JNs ✓+0.13s to Jr Nationals | 2025-07-23 | USA Swimming Futures Sacramento 2025venue |
| 200 Individual Medley | LCM | 2:07.36 | AAAA·Jr Nationals ✓+1.87s to US Open | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.
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 | 22.82 | flat | 200 Free Relay | 2023-03-23 | 2023 Four Corners Speedo Sectionals - Austin |
| 50 Freestyle | SCY | 20.70 | flying | 200 Free Relay (leg 3) | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel - |
| 100 Freestyle | SCY | 45.43 | flying | 400 Free Relay (leg 3) | 2026-03-27 | 2026 Four Corner Speedo Sectionals - Carmel - |
| 200 Freestyle | SCY | 1:37.85 | flying | 800 Free Relay (leg 4) | 2026-03-28 | 2026 Four Corner Speedo Sectionals - Carmel - |
| 50 Butterfly | SCY | 22.24 | flying | 200 Medley Relay (leg 3) | 2026-03-26 | 2026 Four Corner Speedo Sectionals - Carmel - |
| 100 Butterfly | SCY | 48.93 | flying | 400 Medley Relay (leg 3) | 2026-03-29 | 2026 Four Corner Speedo Sectionals - Carmel - |
| 50 Freestyle | LCM | 23.99 | flat | 200 Free Relay | 2026-08-03 | 2026 Speedo Junior National Championships |
| 50 Freestyle | LCM | 23.98 | flying | 200 Free Relay (leg 4) | 2025-07-23 | USA Swimming Futures Sacramento 2025 |
| 100 Freestyle | LCM | 52.12 | flat | 400 Free Relay | 2026-08-06 | 2026 Speedo Junior National Championships |
| 100 Freestyle | LCM | 52.56 | flying | 400 Free Relay (leg 3) | 2025-07-25 | USA Swimming Futures Sacramento 2025 |
| 200 Freestyle | LCM | 1:57.65 | flying | 800 Free Relay (leg 2) | 2025-07-24 | USA Swimming Futures Sacramento 2025 |
| 50 Butterfly | LCM | 25.64 | flying | 200 Medley Relay (leg 3) | 2026-08-05 | 2026 Speedo Junior National Championships |
| 100 Butterfly | LCM | 55.57 | flying | 400 Medley Relay (leg 3) | 2026-08-07 | 2026 Speedo Junior National 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
3141 points (3/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FL SCY | 1:48.07 | 1048 |
| 200 IM SCY | 1:48.81 | 1049 |
| 400 IM SCY | 3:54.57 | 1044 |
| 500 FR SCY | — | 0 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
IMR 17-18 · SCY
4094 points (4/5 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:38.01 | 1068 |
| 100 BR SCY | 56.75 | 960 |
| 100 FL SCY | 48.80 | 1017 |
| 200 IM SCY | 1:48.81 | 1049 |
| 100 BK 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 45.36
Front half 21.87s · back half 23.49s
200 Freestyle SCY 1:38.01 split/total mismatch
100 Butterfly SCY 48.80 split/total mismatch
Front half 22.81s · back half 25.99s
200 Butterfly SCY 1:48.07
Front half 51.91s · back half 56.16s
200 Individual Medley SCY 1:48.81 split/total mismatch
400 Individual Medley SCY 3:54.57
Front half 112.31s · back half 122.26s
100 Freestyle LCM 52.89 split/total mismatch
Front half 25.30s · back half 27.59s
200 Freestyle LCM 2:02.82
Front half 59.64s · back half 63.18s
400 Freestyle LCM 4:19.03
Front half 127.86s · back half 131.17s
1500 Freestyle LCM 17:47.87
100 Butterfly LCM 56.06 split/total mismatch
Front half 26.31s · back half 29.75s
200 Butterfly LCM 2:05.22
Front half 59.11s · back half 66.11s
200 Individual Medley LCM 2:07.36 split/total mismatch
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.
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.