Renzhi Dong

Age: 9 years old
Age Category: 10 & under
Team: Charles River Aquatics | New England Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Charles River Aquatics

New England Swimming

Eastern Zone

USA

Free 50 Y

31.30

02/13/2026

A: 31.09 (+0.21s | 0.7%)

251

1,000+

Free 100 Y

1:10.40

12/11/2025

A: 1:09.79 (+0.61s | 0.9%)

276

980

50 Free

33.96

100 Free

36.44

1:10.40

100 Free

1:10.40

Free 200 Y

2:31.68

12/11/2025

A: 2:31.59 (+0.09s | 0.1%)

204

645

50 Free

34.60

100 Free

39.87

1:14.47

100 Free

1:14.47

150 Free

40.10

1:54.57

200 Free

37.11

2:31.68

100 Free

1:17.21

Free 500 Y

6:55.81

11/14/2025

A: 6:43.39 (+12.42s | 3.0%)

182

578

50 Free

34.74

100 Free

41.52

1:16.26

100 Free

1:16.26

150 Free

42.73

1:58.99

200 Free

43.17

2:42.16

100 Free

1:25.90

250 Free

43.96

3:26.12

300 Free

41.78

4:07.90

100 Free

1:25.74

350 Free

43.10

4:51.00

400 Free

43.47

5:34.47

100 Free

1:26.57

450 Free

41.83

6:16.30

500 Free

39.51

6:55.81

100 Free

1:21.34

Back 50 Y

36.00

02/13/2026

AA: 35.79 (+0.21s | 0.6%)

159

517

Back 100 Y

1:17.84

02/13/2026

AA: 1:16.09 (+1.75s | 2.2%)

179

524

50 Back

38.49

100 Back

39.35

1:17.84

100 Back

1:17.84

Breast 50 Y

38.81

12/11/2025

AAA: 38.29 (+0.52s | 1.3%)

142

Breast 100 Y

1:24.63

11/14/2025

AAA: 1:22.69 (+1.94s | 2.3%)

252

50 Breast

40.36

100 Breast

44.27

1:24.63

100 Breast

1:24.63

Fly 50 Y

33.77

12/11/2025

AAA: 32.59 (+1.18s | 3.5%)

131

357

Fly 100 Y

1:17.92

12/11/2025

AAA: 1:14.59 (+3.33s | 4.3%)

121

402

50 Fly

36.72

100 Fly

41.20

1:17.92

100 Fly

1:17.92

IM 100 Y

1:16.03

12/11/2025

AAA: 1:13.09 (+2.94s | 3.9%)

260

50 IM

36.01

100 IM

40.02

1:16.03

100 IM

1:16.03

IM 200 Y

2:43.07

12/11/2025

AAA: 2:38.39 (+4.68s | 2.9%)

321

50 Fly

37.07

100 Back

43.43

1:20.50

100 IM

1:20.50

150 Breast

45.27

2:05.77

200 Free

37.30

2:43.07

100 IM

1:22.57

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Charles River Aquatics	New England Swimming	Eastern Zone	USA

Above are the fastest times that Renzhi Dong has achieved in his swimming career. For each event, you can find Renzhi's best time, the corresponding time standard, as well as how much faster Renzhi needs to be to reach the next level. The last columns provide Renzhi rankings at the team and LSC levels. These rankings are based on the Renzhi'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	31.30	22.19 (+9.11s \| 29.1%)	21.29 (+10.01s \| 32.0%)	21.29 (+10.01s \| 32.0%)	20.59 (+10.71s \| 34.2%)	20.09 (+11.21s \| 35.8%)	20.39 (+10.91s \| 34.9%)	30.49 (+0.81s \| 2.6%)
Free 100 Y	1:10.40	48.19 (+22.21s \| 31.5%)	46.39 (+24.01s \| 34.1%)	46.39 (+24.01s \| 34.1%)	45.09 (+25.31s \| 36.0%)	43.49 (+26.91s \| 38.2%)	44.39 (+26.01s \| 36.9%)	1:07.19 (+3.21s \| 4.6%)
Free 200 Y	2:31.68	1:45.79 (+45.89s \| 30.3%)	1:41.59 (+50.09s \| 33.0%)	1:41.59 (+50.09s \| 33.0%)	1:38.79 (+52.89s \| 34.9%)	1:36.49 (+55.19s \| 36.4%)	1:38.09 (+53.59s \| 35.3%)	2:24.99 (+6.69s \| 4.4%)
Free 500 Y	6:55.81	4:47.79 (+128.02s \| 30.8%)	4:37.09 (+138.72s \| 33.4%)	4:37.09 (+138.72s \| 33.4%)	4:29.49 (+146.32s \| 35.2%)	4:22.09 (+153.72s \| 37.0%)	4:27.69 (+148.12s \| 35.6%)	6:25.49 (+30.32s \| 7.3%)
Back 50 Y	36.00	N/A	N/A	N/A	N/A	N/A	N/A	36.29
Back 100 Y	1:17.84	53.89 (+23.95s \| 30.8%)	51.49 (+26.35s \| 33.9%)	51.49 (+26.35s \| 33.9%)	49.39 (+28.45s \| 36.5%)	47.59 (+30.25s \| 38.9%)	48.89 (+28.95s \| 37.2%)	1:16.59 (+1.25s \| 1.6%)
Breast 50 Y	38.81	N/A	N/A	N/A	N/A	N/A	N/A	40.29
Breast 100 Y	1:24.63	1:00.89 (+23.74s \| 28.1%)	57.99 (+26.64s \| 31.5%)	57.99 (+26.64s \| 31.5%)	55.89 (+28.74s \| 34.0%)	54.19 (+30.44s \| 36.0%)	55.29 (+29.34s \| 34.7%)	1:26.29
Fly 50 Y	33.77	N/A	N/A	N/A	N/A	N/A	N/A	34.69
Fly 100 Y	1:17.92	52.89 (+25.03s \| 32.1%)	50.59 (+27.33s \| 35.1%)	50.59 (+27.33s \| 35.1%)	48.99 (+28.93s \| 37.1%)	47.79 (+30.13s \| 38.7%)	48.39 (+29.53s \| 37.9%)	1:19.89
IM 100 Y	1:16.03	N/A	N/A	N/A	N/A	N/A	N/A	1:16.99
IM 200 Y	2:43.07	1:58.19 (+44.88s \| 27.5%)	1:53.89 (+49.18s \| 30.2%)	1:53.89 (+49.18s \| 30.2%)	1:50.09 (+52.98s \| 32.5%)	1:46.39 (+56.68s \| 34.8%)	1:48.89 (+54.18s \| 33.2%)	2:46.19

Long Course Distance

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

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 NE SAC 10 Under Champs

02/13/2026

Kingston

100 Y IM

1:16.91

+0.88s

AA: 1:16.39 (+0.52s | 0.7%)

50 IM

36.54

100 IM

40.37

1:16.91

100 IM

1:16.91

100 Y Fly

1:18.23

+0.31s

AAA: 1:14.59 (+3.64s | 4.7%)

50 Fly

36.37

100 Fly

41.86

1:18.23

100 Fly

1:18.23

50 Y Back

36.00

-0.03s (New PB)

AA: 35.79 (+0.21s | 0.6%)

200 Y IM

2:44.99

+1.92s

AAA: 2:38.39 (+6.60s | 4.0%)

50 Fly

36.65

100 Back

42.87

1:19.52

100 IM

1:19.52

150 Breast

46.78

2:06.30

200 Free

38.69

2:44.99

100 IM

1:25.47

100 Y Back

1:17.84

-0.70s (New PB)

AA: 1:16.09 (+1.75s | 2.2%)

50 Back

38.49

100 Back

39.35

1:17.84

100 Back

1:17.84

100 Y Breast

1:26.76

+2.13s

AA: 1:26.59 (+0.17s | 0.2%)

50 Breast

40.59

100 Breast

46.17

1:26.76

100 Breast

1:26.76

50 Y Breast

39.98

+1.17s

AAA: 38.29 (+1.69s | 4.2%)

50 Y Free

31.30

-0.62s (New PB)

A: 31.09 (+0.21s | 0.7%)

2026 NE CRA Last Chance February Invite

02/06/2026

Wellesley

50 Y Breast

39.74

+0.93s

AAA: 38.29 (+1.45s | 3.6%)

100 Y IM

1:18.11

+2.08s

AA: 1:16.39 (+1.72s | 2.2%)

50 IM

38.04

100 IM

40.07

1:18.11

100 IM

1:18.11

2026 NE CRA New Year Distance And Specialty

01/09/2026

Wellesley

500 Y Free

6:57.22

+1.41s

A: 6:43.39 (+13.83s | 3.3%)

50 Free

36.12

100 Free

41.37

1:17.49

100 Free

1:17.49

150 Free

42.46

1:59.95

200 Free

43.07

2:43.02

100 Free

1:25.53

250 Free

42.74

3:25.76

300 Free

43.10

4:08.86

100 Free

1:25.84

350 Free

43.15

4:52.01

400 Free

42.35

5:34.36

100 Free

1:25.50

450 Free

42.64

6:17.00

500 Free

40.22

6:57.22

100 Free

1:22.86

2025 NE CRA Winter Invitational

12/11/2025

Wellesley

50 Y Back

36.86

+0.83s

AA: 35.79 (+1.07s | 2.9%)

200 Y IM

2:43.07

-4.72s (New PB)

AAA: 2:38.39 (+4.68s | 2.9%)

50 Fly

37.07

100 Back

43.43

1:20.50

100 IM

1:20.50

150 Breast

45.27

2:05.77

200 Free

37.30

2:43.07

100 IM

1:22.57

200 Y Free

2:31.68

-2.16s (New PB)

A: 2:31.59 (+0.09s | 0.1%)

50 Free

34.60

100 Free

39.87

1:14.47

100 Free

1:14.47

150 Free

40.10

1:54.57

200 Free

37.11

2:31.68

100 Free

1:17.21

50 Y Fly

33.77

-1.99s (New PB)

AAA: 32.59 (+1.18s | 3.5%)

50 Y Breast

38.81

-0.31s (New PB)

AAA: 38.29 (+0.52s | 1.3%)

100 Y Free

1:10.40

-0.77s (New PB)

A: 1:09.79 (+0.61s | 0.9%)

50 Free

33.96

100 Free

36.44

1:10.40

100 Free

1:10.40

100 Y IM

1:16.03

-4.95s (New PB)

AAA: 1:13.09 (+2.94s | 3.9%)

50 IM

36.01

100 IM

40.02

1:16.03

100 IM

1:16.03

100 Y Fly

1:17.92

-8.72s (New PB)

AAA: 1:14.59 (+3.33s | 4.3%)

50 Fly

36.72

100 Fly

41.20

1:17.92

100 Fly

1:17.92

2025 NECRA Nov Distance Specialty Meet Co

11/14/2025

Wellesley

50 Y Back

36.03

-0.31s (New PB)

AA: 35.79 (+0.24s | 0.7%)

50 Y Breast

39.12

-2.40s (New PB)

AAA: 38.29 (+0.83s | 2.1%)

100 Y Breast

1:24.63

-2.13s (New PB)

AAA: 1:22.69 (+1.94s | 2.3%)

50 Breast

40.36

100 Breast

44.27

1:24.63

100 Breast

1:24.63

50 Y Fly

35.76

-0.07s (New PB)

AA: 34.29 (+1.47s | 4.1%)

100 Y Back

1:19.53

+0.99s

AA: 1:16.09 (+3.44s | 4.3%)

50 Back

39.01

100 Back

40.52

1:19.53

100 Back

1:19.53

500 Y Free

6:55.81

A: 6:43.39 (+12.42s | 3.0%)

50 Free

34.74

100 Free

41.52

1:16.26

100 Free

1:16.26

150 Free

42.73

1:58.99

200 Free

43.17

2:42.16

100 Free

1:25.90

250 Free

43.96

3:26.12

300 Free

41.78

4:07.90

100 Free

1:25.74

350 Free

43.10

4:51.00

400 Free

43.47

5:34.47

100 Free

1:26.57

450 Free

41.83

6:16.30

500 Free

39.51

6:55.81

100 Free

1:21.34

200 Y Free

2:33.84

-2.64s (New PB)

A: 2:31.59 (+2.25s | 1.5%)

50 Free

34.37

100 Free

39.66

1:14.03

100 Free

1:14.03

150 Free

40.73

1:54.76

200 Free

39.08

2:33.84

100 Free

1:19.81

2025 NE CRA October Distance Specialty Co

10/25/2025

Wellesley

100 Y Free

1:13.39

+2.22s

A: 1:09.79 (+3.60s | 4.9%)

50 Free

35.49

100 Free

37.90

1:13.39

100 Free

1:13.39

100 Y Breast

1:26.76

AA: 1:26.59 (+0.17s | 0.2%)

50 Breast

41.98

100 Breast

44.78

1:26.76

100 Breast

1:26.76

200 Y IM

2:47.79

AA: 2:45.89 (+1.90s | 1.1%)

50 Fly

38.53

100 Back

42.83

1:21.36

100 IM

1:21.36

150 Breast

47.86

2:09.22

200 Free

38.57

2:47.79

100 IM

1:26.43

2025 NE CRA October Distance Specialty Meet

10/10/2025

Wellesley

50 Y Back

36.34

AA: 35.79 (+0.55s | 1.5%)

50 Y Fly

35.83

AA: 34.29 (+1.54s | 4.3%)

100 Y Free

1:11.17

A: 1:09.79 (+1.38s | 1.9%)

50 Free

34.19

100 Free

36.98

1:11.17

100 Free

1:11.17

50 Y Free

31.92

A: 31.09 (+0.83s | 2.6%)

100 Y Fly

1:26.64

A: 1:24.39 (+2.25s | 2.6%)

50 Fly

39.85

100 Fly

46.79

1:26.64

100 Fly

1:26.64

100 Y Back

1:18.54

AA: 1:16.09 (+2.45s | 3.1%)

50 Back

38.39

100 Back

40.15

1:18.54

100 Back

1:18.54

2025 NE CRA SeptDistance Speccialty Copi

09/27/2025

Wellesley

100 Y IM

1:20.98

A: 1:19.69 (+1.29s | 1.6%)

50 IM

37.66

100 IM

43.32

1:20.98

100 IM

1:20.98

200 Y Free

2:36.48

A: 2:31.59 (+4.89s | 3.1%)

50 Free

34.02

100 Free

40.75

1:14.77

100 Free

1:14.77

150 Free

42.67

1:57.44

200 Free

39.04

2:36.48

100 Free

1:21.71

50 Y Breast

41.52

AA: 40.19 (+1.33s | 3.2%)

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.