Jefferson Koller

Age: 13 years old
Age Category: 13-14
Team: Mantas Swim Club | Minnesota Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Mantas Swim Club

Minnesota Swimming

Central Zone

USA

Free 50 Y

30.26

02/21/2026

B: 29.89 (+0.37s | 1.2%)

306

1,000+

Free 100 Y

1:07.57

02/21/2026

B: 1:04.99 (+2.58s | 3.8%)

303

1,000+

50 Free

32.57

100 Free

35.00

1:07.57

100 Free

1:07.57

Free 200 Y

2:24.54

02/21/2026

B: 2:22.49 (+2.05s | 1.4%)

235

898

1,000+

50 Free

32.94

100 Free

37.58

1:10.52

100 Free

1:10.52

150 Free

38.49

1:49.01

200 Free

35.53

2:24.54

100 Free

1:14.02

Back 50 Y

34.79

02/27/2026

176

641

1,000+

Back 100 Y

1:19.47

02/13/2026

B: 1:11.29 (+8.18s | 10.3%)

254

915

1,000+

50 Back

38.90

100 Back

40.57

1:19.47

100 Back

1:19.47

Breast 50 Y

51.89

05/10/2025

346

1,000+

Breast 100 Y

1:55.05

03/07/2025

B: 1:20.49 (+34.56s | 30.0%)

370

1,000+

50 Breast

54.19

100 Breast

1:00.86

1:55.05

100 Breast

1:55.05

Fly 50 Y

38.24

02/21/2026

261

917

1,000+

Fly 100 Y

1:51.07

02/08/2025

B: 1:10.49 (+40.58s | 36.5%)

260

874

1,000+

50 Fly

52.49

100 Fly

58.58

1:51.07

100 Fly

1:51.07

IM 200 Y

3:01.11

11/15/2025

B: 2:37.99 (+23.12s | 12.8%)

281

916

1,000+

50 Fly

42.64

100 Back

46.27

1:28.91

100 IM

1:28.91

150 Breast

54.44

2:23.35

200 Free

37.76

3:01.11

100 IM

1:32.20

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Mantas Swim Club

Minnesota Swimming

Central Zone

USA

Free 50 M

39.21

05/16/2025

B: 34.29 (+4.92s | 12.5%)

238

508

1,000+

Free 100 M

1:29.09

05/16/2025

B: 1:15.09 (+14.00s | 15.7%)

243

508

1,000+

50 Free

42.30

100 Free

46.79

1:29.09

100 Free

1:29.09

Free 200 M

3:02.07

06/20/2025

B: 2:43.99 (+18.08s | 9.9%)

179

367

1,000+

50 Free

41.05

100 Free

47.64

1:28.69

100 Free

1:28.69

150 Free

47.40

2:16.09

200 Free

45.98

3:02.07

100 Free

1:33.38

Back 50 M

46.52

05/16/2025

191

379

1,000+

Back 100 M

1:37.80

06/07/2025

B: 1:23.69 (+14.11s | 14.4%)

183

375

1,000+

50 Back

47.78

100 Back

50.02

1:37.80

100 Back

1:37.80

Breast 50 M

1:05.00

06/07/2025

183

400

1,000+

Fly 50 M

53.83

06/20/2025

202

405

1,000+

IM 200 M

3:50.61

05/16/2025

B: 3:02.89 (+47.72s | 20.7%)

166

340

1,000+

50 Fly

55.11

100 Back

55.00

1:50.11

100 IM

1:50.11

150 Breast

1:11.78

3:01.89

200 Free

48.72

3:50.61

100 IM

2:00.50

Above are the fastest times that Jefferson Koller has achieved in his swimming career. For each event, you can find Jefferson's best time, the corresponding time standard, as well as how much faster Jefferson needs to be to reach the next level. The last columns provide Jefferson rankings at the team and LSC levels. These rankings are based on the Jefferson's personal best, his current age category, and team; and are calculated from all the meets results.

Time Standards

Got the currrent age group time standard
Time standard for the next age group and the gap to reach it
Got the next age group’s time standard.

Short Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 Y	30.26	22.19 (+8.07s \| 26.7%)	21.29 (+8.97s \| 29.6%)	21.29 (+8.97s \| 29.6%)	20.59 (+9.67s \| 32.0%)	20.09 (+10.17s \| 33.6%)	20.39 (+9.87s \| 32.6%)	26.29 (+3.97s \| 13.1%)
Free 100 Y	1:07.57	48.19 (+19.38s \| 28.7%)	46.39 (+21.18s \| 31.3%)	46.39 (+21.18s \| 31.3%)	45.09 (+22.48s \| 33.3%)	43.49 (+24.08s \| 35.6%)	44.39 (+23.18s \| 34.3%)	56.69 (+10.88s \| 16.1%)
Free 200 Y	2:24.54	1:45.79 (+38.75s \| 26.8%)	1:41.59 (+42.95s \| 29.7%)	1:41.59 (+42.95s \| 29.7%)	1:38.79 (+45.75s \| 31.7%)	1:36.49 (+48.05s \| 33.2%)	1:38.09 (+46.45s \| 32.1%)	2:03.89 (+20.65s \| 14.3%)
Back 50 Y	34.79	N/A	N/A	N/A	N/A	N/A	N/A	1:02.89
Back 100 Y	1:19.47	53.89 (+25.58s \| 32.2%)	51.49 (+27.98s \| 35.2%)	51.49 (+27.98s \| 35.2%)	49.39 (+30.08s \| 37.9%)	47.59 (+31.88s \| 40.1%)	48.89 (+30.58s \| 38.5%)	2:16.09 1:00.49 (+18.98s \| 23.9%)
Breast 50 Y	51.89	N/A	N/A	N/A	N/A	N/A	N/A	2:35.19
Breast 100 Y	1:55.05	1:00.89 (+54.16s \| 47.1%)	57.99 (+57.06s \| 49.6%)	57.99 (+57.06s \| 49.6%)	55.89 (+59.16s \| 51.4%)	54.19 (+60.86s \| 52.9%)	55.29 (+59.76s \| 51.9%)	1:01.79 (+53.26s \| 46.3%)
Fly 50 Y	38.24	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Fly 100 Y	1:51.07	52.89 (+58.18s \| 52.4%)	50.59 (+60.48s \| 54.5%)	50.59 (+60.48s \| 54.5%)	48.99 (+62.08s \| 55.9%)	47.79 (+63.28s \| 57.0%)	48.39 (+62.68s \| 56.4%)	N/A
IM 200 Y	3:01.11	1:58.19 (+62.92s \| 34.7%)	1:53.89 (+67.22s \| 37.1%)	1:53.89 (+67.22s \| 37.1%)	1:50.09 (+71.02s \| 39.2%)	1:46.39 (+74.72s \| 41.3%)	1:48.89 (+72.22s \| 39.9%)	2:18.59 (+42.52s \| 23.5%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 M	39.21	25.89 (+13.32s \| 34.0%)	24.59 (+14.62s \| 37.3%)	24.59 (+14.62s \| 37.3%)	24.29 (+14.92s \| 38.1%)	23.39 (+15.82s \| 40.3%)	23.79 (+15.42s \| 39.3%)	30.19 (+9.02s \| 23.0%)
Free 100 M	1:29.09	56.09 (+33.00s \| 37.0%)	53.59 (+35.50s \| 39.8%)	53.59 (+35.50s \| 39.8%)	52.59 (+36.50s \| 41.0%)	50.99 (+38.10s \| 42.8%)	51.99 (+37.10s \| 41.6%)	1:04.89 (+24.20s \| 27.2%)
Free 200 M	3:02.07	2:03.09 (+58.98s \| 32.4%)	1:57.79 (+64.28s \| 35.3%)	1:57.79 (+64.28s \| 35.3%)	1:55.49 (+66.58s \| 36.6%)	1:52.19 (+69.88s \| 38.4%)	1:54.09 (+67.98s \| 37.3%)	2:21.29 (+40.78s \| 22.4%)
Back 50 M	46.52	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Back 100 M	1:37.80	1:03.29 (+34.51s \| 35.3%)	1:00.59 (+37.21s \| 38.0%)	1:00.59 (+37.21s \| 38.0%)	58.89 (+38.91s \| 39.8%)	57.29 (+40.51s \| 41.4%)	58.19 (+39.61s \| 40.5%)	1:13.09 (+24.71s \| 25.3%)
Breast 50 M	1:05.00	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Fly 50 M	53.83	N/A	N/A	N/A	N/A	N/A	N/A	N/A
IM 200 M	3:50.61	2:18.39 (+92.22s \| 40.0%)	2:12.79 (+97.82s \| 42.4%)	2:12.79 (+97.82s \| 42.4%)	2:09.59 (+101.02s \| 43.8%)	2:05.79 (+104.82s \| 45.5%)	2:08.19 (+102.42s \| 44.4%)	2:40.19 (+70.42s \| 30.5%)

Progression

See how Jefferson Koller is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Jefferson's time to another swimmer's and even view their profile for more information about them.

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Meets

See all the meets Jefferson Koller has participated in and his achievement. The last event displayed is the most recent. For each event, you can find the Jefferson's time, the progress against Jefferson's best time, the corresponding time standard, as well as how much faster Jefferson needs to be to reach the next level.

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 MN MAN Minnesota Regional Championship

02/27/2026

New Prague

50 Y Back

34.79

-0.44s (New PB)

50 Y Free

30.49

+0.23s

B: 29.89 (+0.60s | 2.0%)

200 Y Free

2:26.84

+2.30s

B: 2:22.49 (+4.35s | 3.0%)

2026 MN NOR MN Bronze Championship Copied

02/21/2026

Northfield

50 Y Fly

38.24

-10.40s (New PB)

50 Y Free

30.26

-1.58s (New PB)

B: 29.89 (+0.37s | 1.2%)

100 Y Free

1:07.57

-0.24s (New PB)

B: 1:04.99 (+2.58s | 3.8%)

50 Free

32.57

100 Free

35.00

1:07.57

100 Free

1:07.57

200 Y Free

2:24.54

-3.89s (New PB)

B: 2:22.49 (+2.05s | 1.4%)

50 Free

32.94

100 Free

37.58

1:10.52

100 Free

1:10.52

150 Free

38.49

1:49.01

200 Free

35.53

2:24.54

100 Free

1:14.02

2026 MN STRM Winter Storm Warning Invite

02/13/2026

Lakeville

200 Y Free

2:28.43

B: 2:22.49 (+5.94s | 4.0%)

100 Free

1:12.21

100 Free

1:12.21

150 Free

38.64

1:50.85

200 Free

37.58

2:28.43

100 Free

1:16.22

50 Y Free

31.84

-2.68s (New PB)

B: 29.89 (+1.95s | 6.1%)

50 Y Back

35.23

-4.22s (New PB)

100 Y Free

1:07.81

-2.80s (New PB)

B: 1:04.99 (+2.82s | 4.2%)

50 Free

32.22

100 Free

35.58

1:07.81

100 Free

1:07.81

100 Y Back

1:19.47

-1.27s (New PB)

B: 1:11.29 (+8.18s | 10.3%)

50 Back

38.90

100 Back

40.57

1:19.47

100 Back

1:19.47

2025 MN STRM 4th Annual Movember Invite

11/21/2025

Lakeville

100 Y Back

1:20.74

-4.19s (New PB)

B: 1:11.29 (+9.45s | 11.7%)

50 Back

38.66

100 Back

42.08

1:20.74

100 Back

1:20.74

100 Y Free

1:10.61

-2.12s (New PB)

B: 1:04.99 (+5.62s | 8.0%)

50 Free

33.57

100 Free

37.04

1:10.61

100 Free

1:10.61

2025 MN SHRK Tigersharks Thanksgiving Classic

11/15/2025

Farmington

100 Y Free

1:12.73

-8.46s (New PB)

B: 1:04.99 (+7.74s | 10.6%)

50 Free

34.65

100 Free

38.08

1:12.73

100 Free

1:12.73

200 Y IM

3:01.11

B: 2:37.99 (+23.12s | 12.8%)

50 Fly

42.64

100 Back

46.27

1:28.91

100 IM

1:28.91

150 Breast

54.44

2:23.35

200 Free

37.76

3:01.11

100 IM

1:32.20

100 Y Back

1:24.93

-1.72s (New PB)

B: 1:11.29 (+13.64s | 16.1%)

50 Back

40.67

100 Back

44.26

1:24.93

100 Back

1:24.93

2025 MN MAN Red White Blue Invite

06/20/2025

Mankato

50 M Fly

53.83

-3.90s (New PB)

B: 41.99 (+11.84s | 22.0%)

100 M Back

1:41.04

+3.24s

B: 1:37.19 (+3.85s | 3.8%)

50 Back

49.44

100 Back

51.60

1:41.04

100 Back

1:41.04

200 M Free

3:02.07

-9.37s (New PB)

B: 2:59.19 (+2.88s | 1.6%)

50 Free

41.05

100 Free

47.64

1:28.69

100 Free

1:28.69

150 Free

47.40

2:16.09

200 Free

45.98

3:02.07

100 Free

1:33.38

50 M Back

48.32

+1.80s

B: 44.49 (+3.83s | 7.9%)

50 M Free

39.62

+0.41s

B: 37.39 (+2.23s | 5.6%)

100 M Free

1:29.55

+0.46s

B: 1:22.09 (+7.46s | 8.3%)

2025 MN STRM Summer Slam

06/07/2025

Minneapolis

200 M Free

3:11.44

-0.43s (New PB)

B: 2:59.19 (+12.25s | 6.4%)

50 Free

43.24

100 Free

49.26

1:32.50

100 Free

1:32.50

150 Free

50.36

2:22.86

200 Free

48.58

3:11.44

100 Free

1:38.94

100 M Back

1:37.80

-0.71s (New PB)

B: 1:37.19 (+0.61s | 0.6%)

50 Back

47.78

100 Back

50.02

1:37.80

100 Back

1:37.80

50 M Breast

1:05.00

B: 49.79 (+15.21s | 23.4%)

2025 MN STRM Spring Startup

05/16/2025

Minneapolis

100 M Back

1:38.51

B: 1:37.19 (+1.32s | 1.3%)

50 Back

48.08

100 Back

50.43

1:38.51

100 Back

1:38.51

100 M Free

1:29.09

B: 1:22.09 (+7.00s | 7.9%)

50 Free

42.30

100 Free

46.79

1:29.09

100 Free

1:29.09

200 M Free

3:11.87

B: 2:59.19 (+12.68s | 6.6%)

50 Free

44.20

100 Free

49.76

1:33.96

100 Free

1:33.96

150 Free

50.28

2:24.24

200 Free

47.63

3:11.87

100 Free

1:37.91

50 M Back

46.52

B: 44.49 (+2.03s | 4.4%)

50 M Free

39.21

B: 37.39 (+1.82s | 4.6%)

50 M Fly

57.73

B: 41.99 (+15.74s | 27.3%)

200 M IM

3:50.61

B: 3:24.39 (+26.22s | 11.4%)

50 Fly

55.11

100 Back

55.00

1:50.11

100 IM

1:50.11

150 Breast

1:11.78

3:01.89

200 Free

48.72

3:50.61

100 IM

2:00.50

2025 MN SHRK Tigersharks IM Tough Challenage

05/10/2025

Farmington

50 Y Back

39.52

+0.07s

B: 38.49 (+1.03s | 2.6%)

50 Y Breast

51.89

-3.44s (New PB)

B: 43.49 (+8.40s | 16.2%)

50 Y Free

34.52

-0.35s (New PB)

B: 32.79 (+1.73s | 5.0%)

2025 MN MAN Minnesota Regional Championship

03/07/2025

New Prague

50 Y Free

35.77

+0.90s

B: 32.79 (+2.98s | 8.3%)

100 Y Free

1:21.19

-0.90s (New PB)

B: 1:11.49 (+9.70s | 11.9%)

50 Free

38.38

100 Free

42.81

1:21.19

100 Free

1:21.19

50 Y Back

39.56

+0.11s

B: 38.49 (+1.07s | 2.7%)

100 Y Breast

1:55.05

-3.59s (New PB)

B: 1:32.59 (+22.46s | 19.5%)

50 Breast

54.19

100 Breast

1:00.86

1:55.05

100 Breast

1:55.05

100 Y Back

1:26.65

-1.59s (New PB)

B: 1:22.19 (+4.46s | 5.1%)

50 Back

42.73

100 Back

43.92

1:26.65

100 Back

1:26.65

100 Y IM

1:35.46

B: 1:21.89 (+13.57s | 14.2%)

50 IM

42.62

100 IM

52.84

1:35.46

100 IM

1:35.46

50 Y Breast

55.87

+0.54s

B: 43.49 (+12.38s | 22.2%)

2025 MN NOR Championship Belt Sprint Spectacu

02/08/2025

Northfield

50 Y Back

39.69

+0.24s

B: 38.49 (+1.20s | 3.0%)

50 Y Free

35.77

+0.90s

B: 32.79 (+2.98s | 8.3%)

100 Y Free

1:22.09

-2.70s (New PB)

B: 1:11.49 (+10.60s | 12.9%)

50 Free

39.21

100 Free

42.88

1:22.09

100 Free

1:22.09

50 Y Breast

56.96

+1.63s

B: 43.49 (+13.47s | 23.6%)

100 Y Back

1:28.24

-2.83s (New PB)

B: 1:22.19 (+6.05s | 6.9%)

50 Back

42.26

100 Back

45.98

1:28.24

100 Back

1:28.24

100 Y Fly

1:51.07

B: 1:22.89 (+28.18s | 25.4%)

50 Fly

52.49

100 Fly

58.58

1:51.07

100 Fly

1:51.07

100 Y Breast

2:01.07

+2.43s

B: 1:32.59 (+28.48s | 23.5%)

50 Breast

58.95

100 Breast

1:02.12

2:01.07

100 Breast

2:01.07

50 Y Fly

48.64

B: 37.09 (+11.55s | 23.7%)

2025 MN FOXJ Winter Classic

01/10/2025

Minneapolis

50 Y Back

39.45

B: 38.49 (+0.96s | 2.4%)

2025 MN SHRK Freezing Your Fins Off

01/04/2025

Farmington

100 Y Back

1:31.07

-2.16s (New PB)

B: 1:22.19 (+8.88s | 9.8%)

50 Back

44.45

100 Back

46.62

1:31.07

100 Back

1:31.07

50 Y Free

34.87

-1.16s (New PB)

B: 32.79 (+2.08s | 6.0%)

50 Y Breast

55.33

-0.32s (New PB)

B: 43.49 (+11.84s | 21.4%)

2024 MN SHRK Tigersharks Thanksgiving Classic

11/16/2024

Farmington

50 Y Breast

55.65

B: 43.49 (+12.16s | 21.9%)

100 Y Back

1:33.23

-1.31s (New PB)

B: 1:22.19 (+11.04s | 11.8%)

50 Back

46.19

100 Back

47.04

1:33.23

100 Back

1:33.23

50 Y Free

36.03

-1.05s (New PB)

B: 32.79 (+3.24s | 9.0%)

2024 MN WEST Express Fall Invite

11/02/2024

Chaska

100 Y Free

1:25.15

+0.36s

B: 1:11.49 (+13.66s | 16.0%)

50 Free

40.62

100 Free

44.53

1:25.15

100 Free

1:25.15

50 Y Free

37.08

B: 32.79 (+4.29s | 11.6%)

100 Y Back

1:34.54

-4.00s (New PB)

B: 1:22.19 (+12.35s | 13.1%)

2024 MN NOR Spooky Splash

10/27/2024

Northfield

100 Y Free

1:24.79

B: 1:11.49 (+13.30s | 15.7%)

50 Free

39.35

100 Free

45.44

1:24.79

100 Free

1:24.79

100 Y Breast

1:58.64

B: 1:32.59 (+26.05s | 22.0%)

50 Breast

57.14

100 Breast

1:01.50

1:58.64

100 Breast

1:58.64

100 Y Back

1:38.54

B: 1:22.19 (+16.35s | 16.6%)

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.