Madeline Johnson-Castillo

Age: 10 years old
Age Category: 10 & under
Team: Vermillion Area Swim Team | South Dakota Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Vermillion Area Swim Team

South Dakota Swimming

Central Zone

USA

Free 25 Y

19.59

10/11/2025

273

1,000+

Free 50 Y

40.57

01/23/2026

B: 39.79 (+0.78s | 1.9%)

1,000+

Free 100 Y

1:31.89

01/23/2026

B: 1:30.79 (+1.10s | 1.2%)

924

1,000+

25 Free

19.63

50 Free

23.67

43.30

50 Free

43.30

75 Free

25.78

1:09.08

100 Free

22.81

1:31.89

50 Free

48.59

Back 50 Y

52.93

01/23/2026

B: 48.59 (+4.34s | 8.2%)

118

1,000+

Breast 50 Y

1:01.11

12/13/2025

B: 54.59 (+6.52s | 10.7%)

1,000+

Fly 25 Y

31.05

10/11/2025

508

1,000+

Fly 50 Y

54.11

01/23/2026

B: 48.39 (+5.72s | 10.6%)

967

1,000+

IM 100 Y

1:47.87

01/23/2026

B: 1:44.29 (+3.58s | 3.3%)

920

1,000+

50 IM

52.64

50 IM

52.64

100 IM

55.23

1:47.87

50 IM

55.23

Long course distance

Event

Time

Age

Date

Standard

Next Standard

Vermillion Area Swim Team

South Dakota Swimming

Central Zone

USA

Free 50 M

55.06

06/20/2025

B: 45.29 (+9.77s | 17.7%)

462

1,000+

Free 100 M

2:00.62

06/06/2025

B: 1:44.09 (+16.53s | 13.7%)

354

1,000+

50 Free

55.54

100 Free

1:05.08

2:00.62

100 Free

2:00.62

Breast 50 M

1:28.65

06/20/2025

B: 1:02.19 (+26.46s | 29.8%)

435

1,000+

Above are the fastest times that Madeline Johnson-Castillo has achieved in her swimming career. For each event, you can find Madeline's best time, the corresponding time standard, as well as how much faster Madeline needs to be to reach the next level. The last columns provide Madeline rankings at the team and LSC levels. These rankings are based on the Madeline'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	40.57	24.89 (+15.68s \| 38.6%)	23.89 (+16.68s \| 41.1%)	23.89 (+16.68s \| 41.1%)	23.29 (+17.28s \| 42.6%)	22.59 (+17.98s \| 44.3%)	22.79 (+17.78s \| 43.8%)	30.89 (+9.68s \| 23.9%)
Free 100 Y	1:31.89	53.99 (+37.90s \| 41.2%)	51.89 (+40.00s \| 43.5%)	51.89 (+40.00s \| 43.5%)	50.39 (+41.50s \| 45.2%)	49.29 (+42.60s \| 46.4%)	49.69 (+42.20s \| 45.9%)	1:08.19 (+23.70s \| 25.8%)
Back 50 Y	52.93	N/A	N/A	N/A	N/A	N/A	N/A	36.49 (+16.44s \| 31.1%)
Breast 50 Y	1:01.11	N/A	N/A	N/A	N/A	N/A	N/A	40.39 (+20.72s \| 33.9%)
Fly 50 Y	54.11	N/A	N/A	N/A	N/A	N/A	N/A	35.09 (+19.02s \| 35.2%)
IM 100 Y	1:47.87	N/A	N/A	N/A	N/A	N/A	N/A	1:17.69 (+30.18s \| 28.0%)

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 M	55.06	28.69 (+26.37s \| 47.9%)	27.39 (+27.67s \| 50.3%)	27.39 (+27.67s \| 50.3%)	26.89 (+28.17s \| 51.2%)	26.29 (+28.77s \| 52.3%)	26.59 (+28.47s \| 51.7%)	35.19 (+19.87s \| 36.1%)
Free 100 M	2:00.62	1:01.89 (+58.73s \| 48.7%)	59.29 (+61.33s \| 50.8%)	59.29 (+61.33s \| 50.8%)	58.19 (+62.43s \| 51.8%)	56.99 (+63.63s \| 52.8%)	57.59 (+63.03s \| 52.3%)	1:17.49 (+43.13s \| 35.8%)
Breast 50 M	1:28.65	N/A	N/A	N/A	N/A	N/A	N/A	46.19 (+42.46s \| 47.9%)

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

SFST SD 2026 January Invite

01/23/2026

Sioux Falls

50 Y Back

52.93

-1.38s (New PB)

B: 48.59 (+4.34s | 8.2%)

50 Y Breast

1:01.28

+0.17s

B: 54.59 (+6.69s | 10.9%)

100 Y IM

1:47.87

B: 1:44.29 (+3.58s | 3.3%)

50 IM

52.64

50 IM

52.64

100 IM

55.23

1:47.87

50 IM

55.23

50 Y Fly

54.11

-1.57s (New PB)

B: 48.39 (+5.72s | 10.6%)

100 Y Free

1:31.89

-2.10s (New PB)

B: 1:30.79 (+1.10s | 1.2%)

25 Free

19.63

50 Free

23.67

43.30

50 Free

43.30

75 Free

25.78

1:09.08

100 Free

22.81

1:31.89

50 Free

48.59

50 Y Free

40.57

-0.40s (New PB)

B: 39.79 (+0.78s | 1.9%)

VAST Winter Invitational

12/13/2025

Vermillion

50 Y Breast

1:01.11

-11.50s (New PB)

B: 54.59 (+6.52s | 10.7%)

50 Y Back

54.31

-7.23s (New PB)

B: 48.59 (+5.72s | 10.5%)

100 Y Free

1:33.99

-8.05s (New PB)

B: 1:30.79 (+3.20s | 3.4%)

50 Free

44.33

100 Free

49.66

1:33.99

100 Free

1:33.99

50 Y Free

40.97

-3.32s (New PB)

B: 39.79 (+1.18s | 2.9%)

50 Y Fly

55.68

B: 48.39 (+7.29s | 13.1%)

2025 SD YST Charity Invite

11/15/2025

Yankton

100 Y Free

1:42.52

+0.48s

B: 1:30.79 (+11.73s | 11.4%)

50 Free

46.31

100 Free

56.21

1:42.52

100 Free

1:42.52

50 Y Breast

1:12.61

-17.15s (New PB)

B: 54.59 (+18.02s | 24.8%)

2025 MW SCH Fall Opener

11/01/2025

Sioux Center

50 Y Back

1:01.54

-8.60s (New PB)

B: 48.59 (+12.95s | 21.0%)

50 Y Breast

1:29.76

B: 54.59 (+35.17s | 39.2%)

50 Y Free

44.29

-4.18s (New PB)

B: 39.79 (+4.50s | 10.2%)

100 Y Free

1:42.04

-7.61s (New PB)

B: 1:30.79 (+11.25s | 11.0%)

50 Free

46.46

100 Free

55.58

1:42.04

100 Free

1:42.04

2025 SFST SD Swim Series Meet #1

10/11/2025

Sioux Falls

25 Y Free

19.59

50 Y Free

48.47

-7.68s (New PB)

B: 39.79 (+8.68s | 17.9%)

100 Y Free

1:49.65

-17.32s (New PB)

B: 1:30.79 (+18.86s | 17.2%)

50 Free

49.91

100 Free

59.74

1:49.65

100 Free

1:49.65

25 Y Fly

31.05

VAST SPLASH

06/20/2025

Vermillion

50 M Free

55.06

-1.43s (New PB)

B: 45.29 (+9.77s | 17.7%)

50 M Breast

1:28.65

B: 1:02.19 (+26.46s | 29.8%)

100 M Free

2:01.46

+0.84s

B: 1:44.09 (+17.37s | 14.3%)

50 Free

52.86

100 Free

1:08.60

2:01.46

100 Free

2:01.46

2025 BSC Summer Splash

06/06/2025

Brookings

50 M Free

56.49

-3.35s (New PB)

B: 45.29 (+11.20s | 19.8%)

100 M Free

2:00.62

-7.77s (New PB)

B: 1:44.09 (+16.53s | 13.7%)

50 Free

55.54

100 Free

1:05.08

2:00.62

100 Free

2:00.62

2025 SD YST Les Schwab Charity Invite

05/31/2025

Yankton

50 M Free

59.84

B: 45.29 (+14.55s | 24.3%)

100 M Free

2:08.39

B: 1:44.09 (+24.30s | 18.9%)

50 Free

1:01.48

100 Free

1:06.91

2:08.39

100 Free

2:08.39

SFST SD 2025 January Invite

01/24/2025

Sioux Falls

50 Y Free

56.15

-10.26s (New PB)

B: 39.79 (+16.36s | 29.1%)

100 Y Free

2:06.97

B: 1:30.79 (+36.18s | 28.5%)

50 Free

57.01

100 Free

1:09.96

2:06.97

100 Free

2:06.97

50 Y Back

1:10.14

-2.46s (New PB)

B: 48.59 (+21.55s | 30.7%)

2024 SD TIDE SC Winter Invite

12/06/2024

Mitchell

50 Y Free

1:06.41

-7.70s (New PB)

B: 39.79 (+26.62s | 40.1%)

25 Free

30.93

50 Free

35.48

1:06.41

50 Free

1:06.41

50 Y Back

1:12.60

-10.92s (New PB)

B: 48.59 (+24.01s | 33.1%)

25 Back

36.77

50 Back

35.83

1:12.60

50 Back

1:12.60

2024 SD YST Veterans Day Charity Invite

11/16/2024

Yankton

50 Y Free

1:14.11

B: 39.79 (+34.32s | 46.3%)

25 Free

36.59

50 Free

37.52

1:14.11

50 Free

1:14.11

50 Y Back

1:23.52

B: 48.59 (+34.93s | 41.8%)

25 Back

38.94

50 Back

44.58

1:23.52

50 Back

1:23.52

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.