Jonathan Adam Simonsen Jackson
Men / born 2011
51
starts
475
top FINA
14
personal best events
PP Over The Years
2024: 16.1 / 2025: 27.0 / 2026: 19.2
50m Breaststroke Progress
2 swims recordedAll disciplinesBest Improvements
200m Breaststroke: -9.9% at Zeekit LÅMØ Øst
100m Butterfly: -8.4% at Zeekit LÅMØ Øst
200m Freestyle: -6.6% at Bærum Open
200m Medley: -5.3% at Zeekit LÅMØ Øst
50m Butterfly: -5% at Odal Sparebank Open Vår
PBs
100m Backstroke: 1.04,90
100m Butterfly: 1.02,38
100m Freestyle: 57,46
100m Medley: 1.10,32
200m Backstroke: 2.24,62
200m Breaststroke: 2.44,54
200m Butterfly: 2.44,46
200m Freestyle: 2.07,46
200m Medley: 2.26,17
400m Freestyle: 4.36,57
50m Backstroke: 29,97
50m Breaststroke: 34,28
50m Butterfly: 28,25
50m Freestyle: 26,50
Top 3 FINA
475 / 100m Freestyle / 57,46
463 / 200m Freestyle / 2.07,46
451 / 400m Freestyle / 4.36,57
Zeekit LÅMØ Øst 2 - HED/OPP/ØST/AKE (minus Asker og Bærum) 202610 Apr 2026 / Sarpsborg
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.04,78 | 1.02,38 | 447 | 55.75 | -3.7 |
| 200m Backstroke National rankings | 2.24,62 | 2.25,12 | 385 | 11.94 | 0.3 |
| 200m Breaststroke National rankings | 2.44,48 | 2.44,54 | 389 | 20.35 | 0 |
| 200m Medley National rankings | 2.24,29 | 2.27,06 | 405 | 6.51 | 1.9 |
| 400m Freestyle National rankings | 4.36,57 | 4.38,47 | 442 | 13.27 | 0.7 |
RA CUP28 Feb 2026 / Sofiemyr
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.05,60 | 1.04,78 | 399 | 28.21 | -1.2 |
| 100m Freestyle National rankings | 57,46 | 59,23 | 433 | 4.24 | 3.1 |
| 200m Backstroke National rankings | 2.24,62 | 2.29,49 | 352 | 2.43 | 3.4 |
| 200m Medley National rankings | 2.24,29 | 2.28,67 | 392 | 3.64 | 3 |
| 50m Butterfly National rankings | 28,25 | 28,62 | 413 | 8.9 | 1.3 |
| 50m Freestyle National rankings | 26,05 | 26,50 | 423 | 7.79 | 1.7 |
Odal Sparebank Open Vår31 Jan 2026 / Jessheim
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 200m Medley National rankings | 2.24,29 | 2.26,69 | 408 | 7.25 | 1.7 |
| 50m Breaststroke National rankings | 35,33 | 34,28 | 385 | 37.06 | -3 |
| 50m Butterfly National rankings | 29,75 | 28,25 | 429 | 60.8 | -5 |
Bærum Open05 Dec 2025 / Nadderud
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Backstroke National rankings | 1.05,76 | 1.04,90 | 412 | 30.72 | -1.3 |
| 100m Freestyle National rankings | 57,86 | 57,46 | 475 | 35.78 | -0.7 |
| 200m Backstroke National rankings | 2.26,78 | 2.24,62 | 389 | 28.56 | -1.5 |
| 200m Freestyle National rankings | 2.16,48 | 2.07,46 | 463 | 82.37 | -6.6 |
| 200m Medley National rankings | 2.24,29 | 2.26,77 | 408 | 7.25 | 1.7 |
| 50m Backstroke National rankings | 29,97 | 30,73 | 372 | 4.16 | 2.5 |
Odal Sparebank Open Høst08 Nov 2025 / Jessheim
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 200m Medley National rankings | 2.24,29 | 2.26,17 | 413 | 8.9 | 1.3 |
| 400m Freestyle National rankings | 4.45,19 | 4.36,57 | 451 | 50.85 | -3 |
| 50m Backstroke National rankings | 30,28 | 29,97 | 401 | 27.28 | -1 |
Lambertseter Open19 Sept 2025 / Lambertseter
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 50m Backstroke National rankings | 31,61 | 30,31 | 388 | 44.46 | -4.1 |
| 50m Breaststroke National rankings | 35,36 | 35,33 | 352 | 17.07 | -0.1 |
| 50m Freestyle National rankings | 27,80 | 27,23 | 390 | 32.36 | -2.1 |
Zeekit LÅMØ Øst14 Mar 2025 / Lørenskog
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.09,49 | 1.07,70 | 349 | 28.42 | -2.6 |
| 200m Backstroke National rankings | 2.41,02 | 2.33,67 | 324 | 33.08 | -4.6 |
| 200m Breaststroke National rankings | 2.53,11 | 2.55,16 | 322 | 5.66 | 1.2 |
| 200m Medley National rankings | 2.32,96 | 2.33,74 | 355 | 9.33 | 0.5 |
| 400m Freestyle National rankings | 4.45,19 | 4.45,99 | 408 | 13.41 | 0.3 |
The North Sea Swim Meet25 Oct 2024 / Stavanger
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Freestyle National rankings | 1.01,60 | 1.02,28 | 373 | 7.93 | 1.1 |
| 100m Medley National rankings | 1.10,60 | 1.10,32 | 344 | 17.51 | -0.4 |
| 200m Butterfly National rankings | 2.49,63 | 2.44,46 | 274 | 18.77 | -3 |
| 50m Butterfly National rankings | 30,87 | 30,80 | 331 | 15.46 | -0.2 |
| 50m Freestyle National rankings | 27,88 | 27,88 | 363 | 17.72 | 0 |
Aquarama Open07 Jun 2024 / Kristiansand
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.14,88 | 1.15,64 | 250 | 3.73 | 1 |
| 200m Medley National rankings | 2.38,30 | 2.44,89 | 287 | 1.1 | 4.2 |
| 400m Medley National rankings | 5.47,29 | DISK | 0 | 0 | n/a |
| 50m Butterfly National rankings | 32,84 | 32,64 | 278 | 11.98 | -0.6 |
| 50m Freestyle National rankings | 29,45 | 30,69 | 272 | 0.98 | 4.2 |
Zeekit Årsklassemesterskap24 May 2024 / Kristiansund
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.14,88 | 1.11,97 | 291 | 24.32 | -3.9 |
| 200m Backstroke National rankings | 2.43,49 | 2.41,02 | 282 | 15.01 | -1.5 |
| 200m Breaststroke National rankings | 3.03,63 | 3.03,13 | 282 | 11.49 | -0.3 |
| 200m Medley National rankings | 2.38,30 | 2.37,93 | 327 | 15.09 | -0.2 |
| 400m Freestyle National rankings | 5.02,51 | 5.08,07 | 327 | 4.45 | 1.8 |
Zeekit LÅMØ Øst15 Mar 2024 / Manglerud
| Discipline | Start | Result | FINA | PP | PB +/- |
|---|---|---|---|---|---|
| 100m Butterfly National rankings | 1.21,76 | 1.14,88 | 258 | 28.56 | -8.4 |
| 200m Backstroke National rankings | 2.49,90 | 2.43,49 | 269 | 20.49 | -3.8 |
| 200m Breaststroke National rankings | 3.23,88 | 3.03,63 | 280 | 35.63 | -9.9 |
| 200m Medley National rankings | 2.47,09 | 2.38,30 | 325 | 36.06 | -5.3 |
| 400m Freestyle National rankings | 5.16,32 | 5.02,51 | 345 | 36.58 | -4.4 |