swimJonah Robertson
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.97 | +1.38s to Sectionals | 2025-03-22 | 2025 ULTRA Championship Meet fast pool |
| 50 Breaststroke | SCY | 31.80 | +4.61s to Sectionals | 2025-03-23 | 2025 ULTRA Championship Meet fast pool |
| 50 Butterfly | SCY | 25.57 | +1.88s to Sectionals | 2025-03-23 | 2025 ULTRA Championship Meet fast pool |
| 100 Butterfly | SCY | 56.73 | +2.74s to Sectionals | 2026-01-31 | 2026 HS Boys MISCA Meet venue |
| 50 Freestyle | SCM | 27.70 | 2024-05-11 | 2024 WMS Spring Splash venue | |
| 100 Freestyle | SCM | 1:01.14 | 2024-05-11 | 2024 WMS Spring Splash venue | |
| 50 Backstroke | SCM | 33.68 | 2025-05-10 | 2025 WMS Spring Splash venue | |
| 50 Breaststroke | SCM | 38.45 | 2025-05-10 | 2025 WMS Spring Splash venue | |
| 50 Butterfly | SCM | 30.44 | 2025-05-10 | 2025 WMS Spring Splash venue | |
| 100 Individual Medley | SCM | 1:12.77 | 2024-05-11 | 2024 WMS Spring Splash venue | |
| 50 Freestyle | LCM | 27.51 | +1.52s to Sectionals | 2024-07-27 | 2024 LCM ULTRA Championship Meet fast pool |
| 100 Freestyle | LCM | 59.18 | +2.59s to Sectionals | 2025-07-25 | 2025 LC ULTRA Championship Meet venue |
| 200 Freestyle | LCM | 2:19.31 | +15.82s to Sectionals | 2025-07-12 | 2025 West Michigan Classic venue |
| 400 Freestyle | LCM | 5:04.12 | +41.93s to Sectionals | 2024-07-14 | 2024 West Michigan Classic venue |
| 800 Freestyle | LCM | 11:26.95 | +136.16s to Sectionals | 2025-06-15 | 2025 Freeze or Fry Freestyle Challenge venue |
| 50 Backstroke | LCM | 33.40 | +4.71s to Sectionals | 2025-07-25 | 2025 LC ULTRA Championship Meet venue |
| 100 Backstroke | LCM | 1:14.04 | +9.65s to Sectionals | 2025-06-06 | MLA Big Red Challenge |
| 50 Breaststroke | LCM | 35.66 | +3.67s to Sectionals | 2025-07-27 | 2025 LC ULTRA Championship Meet venue |
| 100 Breaststroke | LCM | 1:20.02 | +7.23s to Sectionals | 2025-07-25 | 2025 LC ULTRA Championship Meet |
| 50 Butterfly | LCM | 28.46 | +1.07s to Sectionals | 2025-07-25 | 2025 LC ULTRA Championship Meet |
| 100 Butterfly | LCM | 1:08.43 | +6.94s to Sectionals | 2024-07-27 | 2024 LCM ULTRA Championship Meet fast pool |
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 | 22.95 | flying | 200 Free Relay (leg 4) | 2026-01-31 | 2026 HS Boys MISCA Meet |
| 100 Freestyle | SCY | 52.10 | flying | 400 Free Relay (leg 3) | 2026-01-31 | 2026 HS Boys MISCA Meet |
| 50 Butterfly | SCY | 25.08 | flying | 200 Medley Relay (leg 3) | 2026-01-31 | 2026 HS Boys MISCA Meet |
| 50 Freestyle | LCM | 27.16 | flying | 200 Free Relay (leg 2) | 2024-07-28 | 2024 LCM ULTRA Championship Meet |
| 200 Freestyle | LCM | 2:14.87 | flying | 800 Free Relay (leg 2) | 2024-07-27 | 2024 LCM ULTRA Championship Meet |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Butterfly SCY 56.73
Front half 26.22s · back half 30.51s
100 Freestyle SCM 1:01.14
Front half 29.86s · back half 31.28s
100 Individual Medley SCM 1:12.77
Front half 33.08s · back half 39.69s
100 Freestyle LCM 59.18
Front half 28.49s · back half 30.69s
200 Freestyle LCM 2:19.31
Front half 66.69s · back half 72.62s
400 Freestyle LCM 5:04.12
Front half 151.00s · back half 153.12s
800 Freestyle LCM 11:26.95
Front half 345.79s · back half 341.16s
100 Butterfly LCM 1:08.43
Front half 31.94s · back half 36.49s
Progression
Faster times are higher. One card per event, all courses & history.