Charlotte Guo

Age: 10 years old
Age Category: 10 & under
Team: Middlesex Swim Club | New England Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Middlesex Swim Club

New England Swimming

Eastern Zone

USA

Free 50 Y

39.30

01/02/2026

BB: 35.99 (+3.31s | 8.4%)

511

1,000+

Free 100 Y

1:29.11

01/02/2026

BB: 1:21.09 (+8.02s | 9.0%)

448

1,000+

50 Free

41.61

100 Free

47.50

1:29.11

100 Free

1:29.11

Free 200 Y

3:19.46

12/11/2025

BB: 3:00.59 (+18.87s | 9.5%)

343

1,000+

50 Free

45.82

100 Free

50.52

1:36.34

100 Free

1:36.34

150 Free

52.85

2:29.19

200 Free

50.27

3:19.46

100 Free

1:43.12

Back 50 Y

42.58

01/30/2026

A: 37.99 (+4.59s | 10.8%)

265

1,000+

Back 100 Y

1:35.48

01/16/2026

BB: 1:33.99 (+1.49s | 1.6%)

258

1,000+

50 Back

46.69

100 Back

48.79

1:35.48

100 Back

1:35.48

Breast 50 Y

50.69

01/16/2026

BB: 48.69 (+2.00s | 3.9%)

330

1,000+

Breast 100 Y

1:46.27

01/30/2026

A: 1:33.59 (+12.68s | 11.9%)

221

1,000+

50 Breast

51.79

100 Breast

54.48

1:46.27

100 Breast

1:46.27

Fly 25 Y

20.48

11/15/2025

287

926

Fly 50 Y

43.95

12/11/2025

BB: 42.69 (+1.26s | 2.9%)

264

1,000+

IM 100 Y

1:40.33

01/02/2026

BB: 1:33.19 (+7.14s | 7.1%)

411

1,000+

50 IM

48.70

100 IM

51.63

1:40.33

100 IM

1:40.33

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Middlesex Swim Club	New England Swimming	Eastern Zone	USA

Above are the fastest times that Charlotte Guo 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	39.30	24.89 (+14.41s \| 36.7%)	23.89 (+15.41s \| 39.2%)	23.89 (+15.41s \| 39.2%)	23.29 (+16.01s \| 40.7%)	22.59 (+16.71s \| 42.5%)	22.79 (+16.51s \| 42.0%)	30.89 (+8.41s \| 21.4%)
Free 100 Y	1:29.11	53.99 (+35.12s \| 39.4%)	51.89 (+37.22s \| 41.8%)	51.89 (+37.22s \| 41.8%)	50.39 (+38.72s \| 43.5%)	49.29 (+39.82s \| 44.7%)	49.69 (+39.42s \| 44.2%)	1:08.19 (+20.92s \| 23.5%)
Free 200 Y	3:19.46	1:56.29 (+83.17s \| 41.7%)	1:52.89 (+86.57s \| 43.4%)	1:52.29 (+87.17s \| 43.7%)	1:49.09 (+90.37s \| 45.3%)	1:46.69 (+92.77s \| 46.5%)	1:47.39 (+92.07s \| 46.2%)	2:29.09 (+50.37s \| 25.3%)
Back 50 Y	42.58	N/A	N/A	N/A	N/A	N/A	N/A	36.49 (+6.09s \| 14.3%)
Back 100 Y	1:35.48	59.49 (+35.99s \| 37.7%)	57.09 (+38.39s \| 40.2%)	57.09 (+38.39s \| 40.2%)	55.09 (+40.39s \| 42.3%)	53.89 (+41.59s \| 43.6%)	54.49 (+40.99s \| 42.9%)	1:17.89 (+17.59s \| 18.4%)
Breast 50 Y	50.69	N/A	N/A	N/A	N/A	N/A	N/A	40.39 (+10.30s \| 20.3%)
Breast 100 Y	1:46.27	1:07.59 (+38.68s \| 36.4%)	1:05.49 (+40.78s \| 38.4%)	1:05.49 (+40.78s \| 38.4%)	1:03.09 (+43.18s \| 40.6%)	1:01.79 (+44.48s \| 41.9%)	1:02.79 (+43.48s \| 40.9%)	1:27.99 (+18.28s \| 17.2%)
Fly 50 Y	43.95	N/A	N/A	N/A	N/A	N/A	N/A	35.09 (+8.86s \| 20.2%)
IM 100 Y	1:40.33	N/A	N/A	N/A	N/A	N/A	N/A	1:17.69 (+22.64s \| 22.6%)

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 Guo 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 Guo 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 NE GS Silver Championships

01/30/2026

Worcester

100 Y Breast

1:46.27

-6.27s (New PB)

A: 1:33.59 (+12.68s | 11.9%)

50 Breast

51.79

100 Breast

54.48

1:46.27

100 Breast

1:46.27

50 Y Fly

44.24

+0.29s

BB: 42.69 (+1.55s | 3.5%)

50 Y Breast

50.93

+0.24s

BB: 48.69 (+2.24s | 4.4%)

50 Y Back

42.58

-0.97s (New PB)

A: 37.99 (+4.59s | 10.8%)

2026 NE SAC Bronze Championships

01/16/2026

Worcester

50 Y Fly

46.55

+2.60s

BB: 42.69 (+3.86s | 8.3%)

50 Y Back

43.55

-2.62s (New PB)

BB: 43.29 (+0.26s | 0.6%)

50 Y Breast

50.69

-1.00s (New PB)

BB: 48.69 (+2.00s | 3.9%)

100 Y Breast

1:52.54

-13.23s (New PB)

BB: 1:46.89 (+5.65s | 5.0%)

50 Breast

55.52

100 Breast

57.02

1:52.54

100 Breast

1:52.54

50 Y Free

40.24

+0.94s

B: 39.79 (+0.45s | 1.1%)

100 Y Back

1:35.48

-4.14s (New PB)

BB: 1:33.99 (+1.49s | 1.6%)

50 Back

46.69

100 Back

48.79

1:35.48

100 Back

1:35.48

2026 NE INST ABF Blizzard Classic

01/02/2026

Boston

100 Y Free

1:29.11

-1.36s (New PB)

BB: 1:21.09 (+8.02s | 9.0%)

50 Free

41.61

100 Free

47.50

1:29.11

100 Free

1:29.11

50 Y Breast

51.69

-3.95s (New PB)

BB: 48.69 (+3.00s | 5.8%)

50 Y Back

47.81

+1.64s

BB: 43.29 (+4.52s | 9.5%)

50 Y Free

39.30

BB: 35.99 (+3.31s | 8.4%)

100 Y IM

1:40.33

-1.36s (New PB)

BB: 1:33.19 (+7.14s | 7.1%)

50 IM

48.70

100 IM

51.63

1:40.33

100 IM

1:40.33

2025 NE SHAWMUT Candy Cane Classic

12/11/2025

Cambridge

100 Y Free

1:30.47

-3.91s (New PB)

BB: 1:21.09 (+9.38s | 10.4%)

50 Free

42.49

100 Free

47.98

1:30.47

100 Free

1:30.47

200 Y Free

3:19.46

-3.12s (New PB)

BB: 3:00.59 (+18.87s | 9.5%)

50 Free

45.82

100 Free

50.52

1:36.34

100 Free

1:36.34

150 Free

52.85

2:29.19

200 Free

50.27

3:19.46

100 Free

1:43.12

50 Y Breast

55.64

-1.45s (New PB)

B: 54.59 (+1.05s | 1.9%)

50 Y Fly

43.95

-4.20s (New PB)

BB: 42.69 (+1.26s | 2.9%)

2025 NE SAC Turkey Splash

11/15/2025

Worcester

200 Y Free

3:22.58

BB: 3:00.59 (+21.99s | 10.9%)

50 Free

43.34

100 Free

51.99

1:35.33

100 Free

1:35.33

150 Free

54.51

2:29.84

200 Free

52.74

3:22.58

100 Free

1:47.25

25 Y Fly

20.48

100 Y Breast

2:05.77

B: 2:00.29 (+5.48s | 4.4%)

50 Breast

58.45

100 Breast

1:07.32

2:05.77

100 Breast

2:05.77

50 Y Back

46.17

BB: 43.29 (+2.88s | 6.2%)

100 Y Back

1:39.62

BB: 1:33.99 (+5.63s | 5.7%)

50 Back

48.05

100 Back

51.57

1:39.62

100 Back

1:39.62

100 Y IM

1:41.69

BB: 1:33.19 (+8.50s | 8.4%)

50 IM

46.94

100 IM

54.75

1:41.69

100 IM

1:41.69

2025 NE SAC Spooktacular Copied

10/11/2025

Cambridge

50 Y Fly

48.15

BB: 42.69 (+5.46s | 11.3%)

100 Y Free

1:34.38

B: 1:30.79 (+3.59s | 3.8%)

50 Free

42.85

100 Free

51.53

1:34.38

100 Free

1:34.38

50 Y Breast

57.09

B: 54.59 (+2.50s | 4.4%)

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.