Charlotte Kooistra

Age: 10 years old
Age Category: 10 & under
Team: Egra Waves | Michigan Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Egra Waves

Michigan Swimming

Central Zone

USA

Free 50 Y

36.45

02/07/2026

BB: 35.99 (+0.46s | 1.3%)

279

747

1,000+

Free 100 Y

1:24.64

Analysis

02/07/2026

BB: 1:21.09 (+3.55s | 4.2%)

279

748

1,000+

50 Free

40.86

100 Free

43.78

1:24.64

100 Free

1:24.64

Free 200 Y

3:03.52

Analysis

02/14/2026

BB: 3:00.59 (+2.93s | 1.6%)

165

458

1,000+

50 Free

43.65

100 Free

47.98

1:31.63

100 Free

1:31.63

150 Free

48.02

2:19.65

200 Free

43.87

3:03.52

100 Free

1:31.89

Back 50 Y

46.93

03/07/2026

BB: 43.29 (+3.64s | 7.8%)

427

1,000+

Back 100 Y

1:38.40

Analysis

11/15/2025

BB: 1:33.99 (+4.41s | 4.5%)

245

745

1,000+

50 Back

49.38

100 Back

49.02

1:38.40

100 Back

1:38.40

Breast 50 Y

1:00.98

01/10/2026

B: 54.59 (+6.39s | 10.5%)

552

1,000+

Breast 100 Y

2:10.26

Analysis

11/15/2025

B: 2:00.29 (+9.97s | 7.7%)

322

1,000+

50 Breast

1:03.27

100 Breast

1:06.99

2:10.26

100 Breast

2:10.26

Fly 50 Y

45.83

02/14/2026

BB: 42.69 (+3.14s | 6.9%)

247

647

1,000+

Fly 100 Y

1:46.89

Analysis

02/07/2026

BB: 1:41.39 (+5.50s | 5.1%)

320

1,000+

50 Fly

49.16

100 Fly

57.73

1:46.89

100 Fly

1:46.89

IM 100 Y

1:45.71

Analysis

12/05/2025

B: 1:44.29 (+1.42s | 1.3%)

363

1,000+

50 IM

47.46

100 IM

58.25

1:45.71

100 IM

1:45.71

IM 200 Y

3:32.83

Analysis

11/01/2025

BB: 3:18.79 (+14.04s | 6.6%)

139

425

1,000+

50 Fly

47.09

100 Back

53.75

1:40.84

100 IM

1:40.84

150 Breast

1:07.13

2:47.97

200 Free

44.86

3:32.83

100 IM

1:51.99

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Egra Waves	Michigan Swimming	Central Zone	USA

Above are the fastest times that Charlotte Kooistra has achieved in her swimming career. For each event, you can find Charlotte's best time, the corresponding time standard, as well as how much faster Charlotte needs to be to reach the next level. The last columns provide Charlotte rankings at the team and LSC levels. These rankings are based on the Charlotte's personal best, her 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	36.45	24.89 (+11.56s \| 31.7%)	23.89 (+12.56s \| 34.5%)	23.89 (+12.56s \| 34.5%)	23.29 (+13.16s \| 36.1%)	22.59 (+13.86s \| 38.0%)	22.79 (+13.66s \| 37.5%)	30.89 (+5.56s \| 15.3%)
Free 100 Y	1:24.64	53.99 (+30.65s \| 36.2%)	51.89 (+32.75s \| 38.7%)	51.89 (+32.75s \| 38.7%)	50.39 (+34.25s \| 40.5%)	49.29 (+35.35s \| 41.8%)	49.69 (+34.95s \| 41.3%)	1:08.19 (+16.45s \| 19.4%)
Free 200 Y	3:03.52	1:56.29 (+67.23s \| 36.6%)	1:52.89 (+70.63s \| 38.5%)	1:52.29 (+71.23s \| 38.8%)	1:49.09 (+74.43s \| 40.6%)	1:46.69 (+76.83s \| 41.9%)	1:47.39 (+76.13s \| 41.5%)	2:29.09 (+34.43s \| 18.8%)
Back 50 Y	46.93	N/A	N/A	N/A	N/A	N/A	N/A	36.49 (+10.44s \| 22.2%)
Back 100 Y	1:38.40	59.49 (+38.91s \| 39.5%)	57.09 (+41.31s \| 42.0%)	57.09 (+41.31s \| 42.0%)	55.09 (+43.31s \| 44.0%)	53.89 (+44.51s \| 45.2%)	54.49 (+43.91s \| 44.6%)	1:17.89 (+20.51s \| 20.8%)
Breast 50 Y	1:00.98	N/A	N/A	N/A	N/A	N/A	N/A	40.39 (+20.59s \| 33.8%)
Breast 100 Y	2:10.26	1:07.59 (+62.67s \| 48.1%)	1:05.49 (+64.77s \| 49.7%)	1:05.49 (+64.77s \| 49.7%)	1:03.09 (+67.17s \| 51.6%)	1:01.79 (+68.47s \| 52.6%)	1:02.79 (+67.47s \| 51.8%)	1:27.99 (+42.27s \| 32.5%)
Fly 50 Y	45.83	N/A	N/A	N/A	N/A	N/A	N/A	35.09 (+10.74s \| 23.4%)
Fly 100 Y	1:46.89	59.19 (+47.70s \| 44.6%)	56.59 (+50.30s \| 47.1%)	56.59 (+50.30s \| 47.1%)	54.69 (+52.20s \| 48.8%)	53.49 (+53.40s \| 50.0%)	53.99 (+52.90s \| 49.5%)	1:20.19 (+26.70s \| 25.0%)
IM 100 Y	1:45.71	N/A	N/A	N/A	N/A	N/A	N/A	1:17.69 (+28.02s \| 26.5%)
IM 200 Y	3:32.83	2:10.49 (+82.34s \| 38.7%)	2:06.39 (+86.44s \| 40.6%)	2:06.39 (+86.44s \| 40.6%)	2:02.19 (+90.64s \| 42.6%)	1:59.49 (+93.34s \| 43.9%)	2:00.59 (+92.24s \| 43.3%)	2:46.49 (+46.34s \| 21.8%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional

Progression

See how Charlotte Kooistra is improving gradually by choosing the distance and the stroke you are interested in. You can also compare the Charlotte'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 Charlotte Kooistra has participated in and her achievement. The last event displayed is the most recent. For each event, you can find the Charlotte's time, the progress against Charlotte's best time, the corresponding time standard, as well as how much faster Charlotte needs to be to reach the next level.

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 Lake Michigan Regional Meet

03/07/2026

East Grand Rapids

100 Y Fly

1:50.63

+3.74s

BB: 1:41.39 (+9.24s | 8.4%)

50 Fly

52.72

100 Fly

57.91

1:50.63

100 Fly

1:50.63

50 Y Free

38.98

+2.53s

BB: 35.99 (+2.99s | 7.7%)

50 Y Fly

47.39

+1.56s

BB: 42.69 (+4.70s | 9.9%)

50 Y Back

46.93

-0.14s (New PB)

BB: 43.29 (+3.64s | 7.8%)

200 Y IM

3:37.22

+4.39s

BB: 3:18.79 (+18.43s | 8.5%)

50 Fly

52.38

100 Back

52.62

1:45.00

100 IM

1:45.00

150 Breast

1:08.58

2:53.58

200 Free

43.64

3:37.22

100 IM

1:52.22

200 Y Free

3:09.78

+6.26s

BB: 3:00.59 (+9.19s | 4.8%)

50 Free

45.14

100 Free

50.85

1:35.99

100 Free

1:35.99

150 Free

49.49

2:25.48

200 Free

44.30

3:09.78

100 Free

1:33.79

2026 WMSL Winter A Championship

02/14/2026

Jenison

200 Y Free

3:03.52

-4.40s (New PB)

BB: 3:00.59 (+2.93s | 1.6%)

50 Free

43.65

100 Free

47.98

1:31.63

100 Free

1:31.63

150 Free

48.02

2:19.65

200 Free

43.87

3:03.52

100 Free

1:31.89

50 Y Fly

45.83

-0.59s (New PB)

BB: 42.69 (+3.14s | 6.9%)

2026 Grand Rapids Open

02/07/2026

Kentwood

100 Y Back

1:39.70

+1.30s

BB: 1:33.99 (+5.71s | 5.7%)

50 Y Fly

46.42

-0.28s (New PB)

BB: 42.69 (+3.73s | 8.0%)

50 Y Back

50.49

+3.42s

B: 48.59 (+1.90s | 3.8%)

50 Y Free

36.45

-1.64s (New PB)

BB: 35.99 (+0.46s | 1.3%)

100 Y Free

1:24.64

-0.91s (New PB)

BB: 1:21.09 (+3.55s | 4.2%)

50 Free

40.86

100 Free

43.78

1:24.64

100 Free

1:24.64

100 Y Fly

1:46.89

-2.57s (New PB)

BB: 1:41.39 (+5.50s | 5.1%)

50 Fly

49.16

100 Fly

57.73

1:46.89

100 Fly

1:46.89

2026 Zeeland Winter Classic

01/10/2026

Zeeland

100 Y Fly

1:49.46

BB: 1:41.39 (+8.07s | 7.4%)

50 Fly

52.15

100 Fly

57.31

1:49.46

100 Fly

1:49.46

50 Y Breast

1:00.98

-4.21s (New PB)

B: 54.59 (+6.39s | 10.5%)

100 Y Free

1:26.11

+0.56s

BB: 1:21.09 (+5.02s | 5.8%)

50 Free

42.79

100 Free

43.32

1:26.11

100 Free

1:26.11

EGRA 2025 Winter Washout

12/05/2025

Grand Rapids

100 Y Free

1:28.50

+2.95s

BB: 1:21.09 (+7.41s | 8.4%)

50 Free

43.83

100 Free

44.67

1:28.50

100 Free

1:28.50

50 Y Fly

50.46

+3.76s

B: 48.39 (+2.07s | 4.1%)

50 Y Free

39.27

+1.18s

BB: 35.99 (+3.28s | 8.4%)

100 Y IM

1:45.71

-0.32s (New PB)

B: 1:44.29 (+1.42s | 1.3%)

50 IM

47.46

100 IM

58.25

1:45.71

100 IM

1:45.71

100 Y Back

1:42.06

+3.66s

BB: 1:33.99 (+8.07s | 7.9%)

50 Back

50.14

100 Back

51.92

1:42.06

100 Back

1:42.06

50 Y Back

47.07

-0.44s (New PB)

BB: 43.29 (+3.78s | 8.0%)

50 Y Breast

1:05.19

B: 54.59 (+10.60s | 16.3%)

2025 GR Gales Of November Open Invitational

11/15/2025

Kentwood

100 Y Back

1:38.40

-3.05s (New PB)

BB: 1:33.99 (+4.41s | 4.5%)

50 Back

49.38

100 Back

49.02

1:38.40

100 Back

1:38.40

50 Y Back

48.13

+0.62s

BB: 43.29 (+4.84s | 10.1%)

100 Y Breast

2:10.26

B: 2:00.29 (+9.97s | 7.7%)

50 Breast

1:03.27

100 Breast

1:06.99

2:10.26

100 Breast

2:10.26

200 Y Free

3:07.92

-0.96s (New PB)

BB: 3:00.59 (+7.33s | 3.9%)

50 Free

44.33

100 Free

49.86

1:34.19

100 Free

1:34.19

150 Free

49.63

2:23.82

200 Free

44.10

3:07.92

100 Free

1:33.73

200 Y IM

3:34.87

+2.04s

BB: 3:18.79 (+16.08s | 7.5%)

50 Fly

45.17

100 Back

53.93

1:39.10

100 IM

1:39.10

150 Breast

1:11.35

2:50.45

200 Free

44.42

3:34.87

100 IM

1:55.77

Greater Kalamazoo Arena Challenge

11/01/2025

Otsego

50 Y Free

39.58

+1.49s

BB: 35.99 (+3.59s | 9.1%)

50 Y Fly

46.70

BB: 42.69 (+4.01s | 8.6%)

100 Y Free

1:28.04

+2.49s

BB: 1:21.09 (+6.95s | 7.9%)

50 Free

42.41

100 Free

45.63

1:28.04

100 Free

1:28.04

200 Y IM

3:32.83

BB: 3:18.79 (+14.04s | 6.6%)

50 Fly

47.09

100 Back

53.75

1:40.84

100 IM

1:40.84

150 Breast

1:07.13

2:47.97

200 Free

44.86

3:32.83

100 IM

1:51.99

200 Y Free

3:09.39

+0.51s

BB: 3:00.59 (+8.80s | 4.6%)

50 Free

45.92

100 Free

49.60

1:35.52

100 Free

1:35.52

150 Free

48.67

2:24.19

200 Free

45.20

3:09.39

100 Free

1:33.87

100 Y Back

1:44.28

+2.83s

BB: 1:33.99 (+10.29s | 9.9%)

50 Back

50.23

100 Back

54.05

1:44.28

100 Back

1:44.28

2025 WMS Boo Bash

10/17/2025

Zeeland

100 Y IM

1:46.03

B: 1:44.29 (+1.74s | 1.6%)

50 IM

50.25

100 IM

55.78

1:46.03

100 IM

1:46.03

50 Y Back

47.51

BB: 43.29 (+4.22s | 8.9%)

50 Y Free

38.09

BB: 35.99 (+2.10s | 5.5%)

100 Y Free

1:25.55

BB: 1:21.09 (+4.46s | 5.2%)

200 Y Free

3:08.88

BB: 3:00.59 (+8.29s | 4.4%)

50 Free

44.79

100 Free

49.62

1:34.41

100 Free

1:34.41

150 Free

48.74

2:23.15

200 Free

45.73

3:08.88

100 Free

1:34.47

100 Y Back

1:41.45

BB: 1:33.99 (+7.46s | 7.4%)

50 Back

50.71

100 Back

50.74

1:41.45

100 Back

1:41.45

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.