Mason Steen
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.69 | BB+0.30s to A | 2025-09-27 | 2025 PVST Pentathlon venue |
| 100 Freestyle | SCY | 52.65 | A+1.36s to AA | 2025-10-12 | 2025 CA Paseo Fall Kickoff Season Opener venue |
| 200 Freestyle | SCY | 1:53.66 | A+1.67s to AA | 2026-02-21 | BUEN February Coastal Champs venue |
| 500 Freestyle | SCY | 4:59.29 | AA+8.20s to AAA | 2025-12-14 | 2025 CA GWSC Winter Age Group Invitational venue |
| 1000 Freestyle | SCY | 10:27.10 | AA+20.71s to AAA | 2025-12-12 | 2025 CA GWSC Winter Age Group Invitational venue |
| 1650 Freestyle | SCY | 18:02.15 | A+25.26s to AA | 2026-02-21 | BUEN February Coastal Champs venue |
| 50 Backstroke | SCY | 29.55 | BB+2.26s to A | 2025-09-27 | 2025 PVST Pentathlon venue |
| 100 Backstroke | SCY | 1:03.59 | B+0.70s to BB | 2025-09-28 | 2025 PVST Pentathlon venue |
| 50 Breaststroke | SCY | 33.71 | BB+2.22s to A | 2025-09-27 | 2025 PVST Pentathlon venue |
| 100 Breaststroke | SCY | 1:11.42 | BB+5.43s to A | 2025-09-28 | 2025 PVST Pentathlon venue |
| 50 Butterfly | SCY | 27.82 | BB+0.63s to A | 2025-09-27 | 2025 PVST Pentathlon venue |
| 100 Butterfly | SCY | 59.63 | BB+1.94s to A | 2025-09-28 | 2025 PVST Pentathlon venue |
| 200 Butterfly | SCY | 2:20.70 | B+0.71s to BB | 2026-01-24 | 2026 CA SBSC January IMX Meet venue |
| 100 Individual Medley | SCY | 1:01.41 | 2025-09-27 | 2025 PVST Pentathlon venue | |
| 200 Individual Medley | SCY | 2:08.87 | A+4.58s to AA | 2025-12-12 | 2025 CA GWSC Winter Age Group Invitational venue |
| 400 Individual Medley | SCY | 4:31.33 | A+5.24s to AA | 2025-12-13 | 2025 CA GWSC Winter Age Group Invitational venue |
| 50 Freestyle | LCM | 29.19 | BB+0.90s to A | 2025-05-24 | BUEN Memorial Day LC Meet venue |
| 100 Freestyle | LCM | 59.56 | A+0.57s to AA | 2025-07-24 | 2025 CA SCS Summer A/G Champs CANY venue |
| 200 Freestyle | LCM | 2:08.02 | AA+4.43s to AAA | 2026-05-23 | BUEN Memorial Day LC Meet venue |
| 400 Freestyle | LCM | 4:26.20 | AA+2.51s to AAA | 2026-06-13 | 2026 SCS June AG Invite venue |
| 800 Freestyle | LCM | 9:09.16 | AA+2.67s to AAA | 2026-06-14 | 2026 SCS June AG Invite venue |
| 1500 Freestyle | LCM | 18:03.19 | AA+31.60s to AAA | 2026-05-22 | BUEN Memorial Day LC Meet venue |
| 50 Backstroke | LCM | 33.45 | BB+0.96s to A | 2026-04-11 | 2026 BUEN LCM Opener venue |
| 100 Backstroke | LCM | 1:10.97 | BB+2.88s to A | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 200 Backstroke | LCM | 2:28.20 | BB+0.51s to A | 2026-06-13 | 2026 SCS June AG Invite venue |
| 50 Breaststroke | LCM | 37.77 | BB+1.88s to A | 2026-04-11 | 2026 BUEN LCM Opener venue |
| 100 Breaststroke | LCM | 1:26.10 | B+2.61s to BB | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 200 Breaststroke | LCM | 2:58.25 | BB+10.76s to A | 2026-06-27 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 50 Butterfly | LCM | 30.86 | BB+0.07s to A | 2025-04-13 | 2025 Buenaventura LCM Opener slow pool |
| 100 Butterfly | LCM | 1:06.90 | BB+0.91s to A | 2026-05-23 | BUEN Memorial Day LC Meet venue |
| 200 Butterfly | LCM | 2:26.69 | A+5.10s to AA | 2026-06-12 | 2026 SCS June AG Invite venue |
| 200 Individual Medley | LCM | 2:27.63 | A+2.64s to AA | 2026-06-28 | 2026 Class-Malibu Waves Free Weekend Invite venue |
| 400 Individual Medley | LCM | 5:05.02 | AA+9.43s to AAA | 2026-06-11 | 2026 SCS June AG Invite 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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 24.26 | flying | 200 Free Relay (leg 2) | 2026-02-21 | BUEN February Coastal Champs |
| 50 Butterfly | SCY | 27.42 | flying | 200 Medley Relay (leg 3) | 2026-02-22 | BUEN February Coastal Champs |
| 50 Freestyle | LCM | 28.53 | flat | 200 Free Relay | 2025-06-12 | 2025 June Age Group Invite |
| 50 Freestyle | LCM | 27.60 | flying | 200 Free Relay (leg 3) | 2026-06-11 | 2026 SCS June AG Invite |
| 50 Breaststroke | LCM | 39.12 | flying | 200 Medley Relay (leg 2) | 2025-06-15 | 2025 June Age Group Invite |
| 50 Butterfly | LCM | 30.38 | flying | 200 Medley Relay (leg 3) | 2026-06-14 | 2026 SCS June AG Invite |
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 · LCM
4218 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:26.20 | 834 |
| 200 BK LCM | 2:28.20 | 662 |
| 200 BR LCM | 2:58.25 | 548 |
| 200 FL LCM | 2:26.69 | 676 |
| 200 IM LCM | 2:27.63 | 716 |
| 400 IM LCM | 5:05.02 | 782 |
IMR 15-16 · LCM
3186 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR LCM | 2:08.02 | 772 |
| 100 BK LCM | 1:10.97 | 588 |
| 100 BR LCM | 1:26.10 | 473 |
| 100 FL LCM | 1:06.90 | 637 |
| 200 IM LCM | 2:27.63 | 716 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 52.65
Front half 25.53s · back half 27.12s
200 Freestyle SCY 1:53.66
Front half 55.70s · back half 57.96s
500 Freestyle SCY 4:59.29
Front half 149.30s · back half 149.99s
1000 Freestyle SCY 10:27.10
Front half 314.54s · back half 312.56s
1650 Freestyle SCY 18:02.15
100 Backstroke SCY 1:03.59
Front half 31.01s · back half 32.58s
100 Breaststroke SCY 1:11.42
Front half 33.59s · back half 37.83s
100 Butterfly SCY 59.63
Front half 28.08s · back half 31.55s
200 Butterfly SCY 2:20.70
Front half 67.17s · back half 73.53s
100 Individual Medley SCY 1:01.41
Front half 28.62s · back half 32.79s
200 Individual Medley SCY 2:08.87
Front half 61.74s · back half 67.13s
400 Individual Medley SCY 4:31.33
Front half 134.24s · back half 137.09s
200 Freestyle LCM 2:08.02
Front half 62.41s · back half 65.61s
400 Freestyle LCM 4:26.20
Front half 132.35s · back half 133.85s
800 Freestyle LCM 9:09.16
Front half 275.12s · back half 274.04s
1500 Freestyle LCM 18:03.19
Front half 543.24s · back half 539.95s
100 Backstroke LCM 1:10.97
Front half 34.88s · back half 36.09s
200 Backstroke LCM 2:28.20
Front half 74.28s · back half 73.92s
100 Breaststroke LCM 1:26.10
Front half 41.15s · back half 44.95s
200 Breaststroke LCM 2:58.25
Front half 87.34s · back half 90.91s
200 Butterfly LCM 2:26.69
Front half 70.00s · back half 76.69s
200 Individual Medley LCM 2:27.63
Front half 70.27s · back half 77.36s
400 Individual Medley LCM 5:05.02
Front half 148.94s · back half 156.08s
Progression
Faster times are higher. One card per event, all courses & history.