Zhencheng Xu

Age: 9 years old
Age Category: 10 & under
Team: Alto Swim Club | Pacific Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Pacific Swimming

Alto Swim Club

Free 25 Y

19.05

02/01/2025

267

Free 50 Y

39.46

12/06/2025

B: 38.19 (+1.27s | 3.2%)

468

Free 100 Y

1:32.38

12/06/2025

B: 1:27.99 (+4.39s | 4.8%)

483

50 Free

43.65

100 Free

48.73

1:32.38

100 Free

1:32.38

Free 200 Y

3:16.33

12/06/2025

B: 3:09.49 (+6.84s | 3.5%)

238

50 Free

42.05

100 Free

51.88

1:33.93

100 Free

1:33.93

150 Free

52.56

2:26.49

200 Free

49.83

3:16.32

100 Free

1:42.39

Free 500 Y

8:30.32

10/25/2025

B: 8:24.29 (+6.03s | 1.2%)

106

Back 50 Y

44.47

12/06/2025

BB: 42.89 (+1.58s | 3.6%)

264

Back 100 Y

1:56.23

02/22/2025

B: 1:40.69 (+15.54s | 13.4%)

394

Breast 25 Y

24.98

01/25/2025

139

Breast 50 Y

54.06

03/29/2025

B: 53.39 (+0.67s | 1.2%)

453

Fly 25 Y

22.32

01/25/2025

176

Fly 50 Y

45.03

03/29/2025

BB: 41.29 (+3.74s | 8.3%)

253

IM 100 Y

1:37.26

10/25/2025

BB: 1:29.69 (+7.57s | 7.8%)

306

Long course distance

Event	Time	Age	Date	Standard	Next Standard	Pacific Swimming	Alto Swim Club
Free 50 M	45.65	9	04/19/2025		B: 43.89 (+1.76s \| 3.9%)	244	31

Free 100 M	1:43.20	9	04/19/2025		B: 1:40.99 (+2.21s \| 2.1%)	232	26

Free 200 M	3:39.44	9	04/19/2025		B: 3:36.69 (+2.75s \| 1.3%)	134	27

Back 50 M	53.96	9	04/19/2025	B	BB: 49.29 (+4.67s \| 8.7%)	220	28

Breast 50 M	1:02.18	9	07/19/2025		B: 1:00.89 (+1.29s \| 2.1%)	254	34

Breast 100 M	2:12.23	9	07/19/2025	B	BB: 1:59.19 (+13.04s \| 9.9%)	179	19

Fly 50 M	49.70	9	07/19/2025	B	BB: 46.39 (+3.31s \| 6.7%)	116	16

Fly 100 M	2:10.21	9	07/19/2025		B: 2:09.49 (+0.72s \| 0.6%)	73	15

IM 200 M	3:59.12	9	07/19/2025	B	BB: 3:43.69 (+15.43s \| 6.5%)	96	17

Above are the fastest times that Zhencheng Xu has achieved in his swimming career. For each event, you can find Zhencheng's best time, the corresponding time standard, as well as how much faster Zhencheng needs to be to reach the next level. The last columns provide Zhencheng rankings at the team and LSC levels. These rankings are based on the Zhencheng'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	Age Group Championship	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	SouthWestern Age Group Regional
Free 50 Y	39.46	30.99 (+8.47s \| 21.5%)	30.19 (+9.27s \| 23.5%)	26.89 (+12.57s \| 31.9%)	24.79 (+14.67s \| 37.2%)	23.29 (+16.17s \| 41.0%)	22.19 (+17.27s \| 43.8%)	21.29 (+18.17s \| 46.0%)	21.29 (+18.17s \| 46.0%)	20.59 (+18.87s \| 47.8%)	20.09 (+19.37s \| 49.1%)	20.39 (+19.07s \| 48.3%)	N/A	30.49 (+8.97s \| 22.7%)
Free 100 Y	1:32.38	1:09.69 (+22.69s \| 24.6%)	1:07.59 (+24.79s \| 26.8%)	58.69 (+33.69s \| 36.5%)	54.19 (+38.19s \| 41.3%)	51.19 (+41.19s \| 44.6%)	48.19 (+44.19s \| 47.8%)	46.39 (+45.99s \| 49.8%)	46.39 (+45.99s \| 49.8%)	45.09 (+47.29s \| 51.2%)	43.49 (+48.89s \| 52.9%)	44.39 (+47.99s \| 51.9%)	N/A	1:07.19 (+25.19s \| 27.3%)
Free 200 Y	3:16.33	2:29.39 (+46.94s \| 23.9%)	2:26.99 (+49.34s \| 25.1%)	2:08.39 (+67.94s \| 34.6%)	1:58.59 (+77.74s \| 39.6%)	1:52.09 (+84.24s \| 42.9%)	1:45.79 (+90.54s \| 46.1%)	1:41.59 (+94.74s \| 48.3%)	1:41.59 (+94.74s \| 48.3%)	1:38.79 (+97.54s \| 49.7%)	1:36.49 (+99.84s \| 50.9%)	1:38.09 (+98.24s \| 50.0%)	N/A	2:24.99 (+51.34s \| 26.1%)
Free 500 Y	8:30.32	6:37.09 (+113.23s \| 22.2%)	6:26.79 (+123.53s \| 24.2%)	5:47.89 (+162.43s \| 31.8%)	5:21.19 (+189.13s \| 37.1%)	5:04.39 (+205.93s \| 40.4%)	4:47.79 (+222.53s \| 43.6%)	4:37.09 (+233.23s \| 45.7%)	4:37.09 (+233.23s \| 45.7%)	4:29.49 (+240.83s \| 47.2%)	4:22.09 (+248.23s \| 48.6%)	4:27.69 (+242.63s \| 47.5%)	N/A	6:25.49 (+124.83s \| 24.5%)
Back 50 Y	44.47	36.99 (+7.48s \| 16.8%)	35.79 (+8.68s \| 19.5%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	36.29 (+8.18s \| 18.4%)
Back 100 Y	1:56.23	1:18.89 (+37.34s \| 32.1%)	1:17.09 (+39.14s \| 33.7%)	1:04.69 (+51.54s \| 44.3%)	59.79 (+56.44s \| 48.6%)	55.99 (+60.24s \| 51.8%)	53.89 (+62.34s \| 53.6%)	51.49 (+64.74s \| 55.7%)	51.49 (+64.74s \| 55.7%)	49.39 (+66.84s \| 57.5%)	47.59 (+68.64s \| 59.1%)	48.89 (+67.34s \| 57.9%)	N/A	1:16.59 (+39.64s \| 34.1%)
Breast 50 Y	54.06	40.99 (+13.07s \| 24.2%)	39.99 (+14.07s \| 26.0%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	40.29 (+13.77s \| 25.5%)
Fly 50 Y	45.03	35.39 (+9.64s \| 21.4%)	33.99 (+11.04s \| 24.5%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	34.69 (+10.34s \| 23.0%)
IM 100 Y	1:37.26	1:18.89 (+18.37s \| 18.9%)	1:16.89 (+20.37s \| 20.9%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	1:16.99 (+20.27s \| 20.8%)

Long Course Distance

Event	Best Time	Age Group Championship	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	U.S Olympic Team Trials	SouthWestern Age Group Regional
Free 50 M	45.65	35.49 (+10.16s \| 22.3%)	34.39 (+11.26s \| 24.7%)	30.19 (+15.46s \| 33.9%)	27.89 (+17.76s \| 38.9%)	26.79 (+18.86s \| 41.3%)	25.89 (+19.76s \| 43.3%)	24.59 (+21.06s \| 46.1%)	24.59 (+21.06s \| 46.1%)	24.29 (+21.36s \| 46.8%)	23.39 (+22.26s \| 48.8%)	23.79 (+21.86s \| 47.9%)	N/A	22.79 (+22.86s \| 50.1%)	34.59 (+11.06s \| 24.2%)
Free 100 M	1:43.20	1:19.49 (+23.71s \| 23.0%)	1:17.09 (+26.11s \| 25.3%)	1:07.39 (+35.81s \| 34.7%)	1:02.19 (+41.01s \| 39.7%)	59.19 (+44.01s \| 42.6%)	56.09 (+47.11s \| 45.6%)	53.59 (+49.61s \| 48.1%)	53.59 (+49.61s \| 48.1%)	52.59 (+50.61s \| 49.0%)	50.99 (+52.21s \| 50.6%)	51.99 (+51.21s \| 49.6%)	N/A	49.99 (+53.21s \| 51.6%)	1:16.89 (+26.31s \| 25.5%)
Free 200 M	3:39.44	2:49.89 (+49.55s \| 22.6%)	2:46.39 (+53.05s \| 24.2%)	2:27.89 (+71.55s \| 32.6%)	2:16.49 (+82.95s \| 37.8%)	2:09.29 (+90.15s \| 41.1%)	2:03.09 (+96.35s \| 43.9%)	1:57.79 (+101.65s \| 46.3%)	1:57.79 (+101.65s \| 46.3%)	1:55.49 (+103.95s \| 47.4%)	1:52.19 (+107.25s \| 48.9%)	1:54.09 (+105.35s \| 48.0%)	N/A	1:49.99 (+109.45s \| 49.9%)	2:44.69 (+54.75s \| 24.9%)
Back 50 M	53.96	42.99 (+10.97s \| 20.3%)	40.79 (+13.17s \| 24.4%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	41.59 (+12.37s \| 22.9%)
Breast 50 M	1:02.18	46.99 (+15.19s \| 24.4%)	45.59 (+16.59s \| 26.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	46.29 (+15.89s \| 25.6%)
Breast 100 M	2:12.23	1:42.69 (+29.54s \| 22.3%)	1:39.19 (+33.04s \| 25.0%)	1:25.49 (+46.74s \| 35.3%)	1:18.89 (+53.34s \| 40.3%)	1:13.79 (+58.44s \| 44.2%)	1:11.29 (+60.94s \| 46.1%)	1:08.19 (+64.04s \| 48.4%)	1:08.19 (+64.04s \| 48.4%)	1:06.59 (+65.64s \| 49.6%)	1:04.09 (+68.14s \| 51.5%)	1:05.29 (+66.94s \| 50.6%)	N/A	1:02.19 (+70.04s \| 53.0%)	1:40.19 (+32.04s \| 24.2%)
Fly 50 M	49.70	40.19 (+9.51s \| 19.1%)	38.49 (+11.21s \| 22.6%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	39.19 (+10.51s \| 21.1%)
Fly 100 M	2:10.21	1:34.29 (+35.92s \| 27.6%)	1:30.29 (+39.92s \| 30.7%)	1:12.69 (+57.52s \| 44.2%)	1:07.09 (+63.12s \| 48.5%)	1:03.59 (+66.62s \| 51.2%)	1:00.89 (+69.32s \| 53.2%)	57.99 (+72.22s \| 55.5%)	57.99 (+72.22s \| 55.5%)	57.09 (+73.12s \| 56.2%)	55.09 (+75.12s \| 57.7%)	55.99 (+74.22s \| 57.0%)	N/A	53.59 (+76.62s \| 58.8%)	1:30.59 (+39.62s \| 30.4%)
IM 200 M	3:59.12	3:14.29 (+44.83s \| 18.7%)	3:09.69 (+49.43s \| 20.7%)	2:45.49 (+73.63s \| 30.8%)	2:32.79 (+86.33s \| 36.1%)	2:25.09 (+94.03s \| 39.3%)	2:18.39 (+100.73s \| 42.1%)	2:12.79 (+106.33s \| 44.5%)	2:12.79 (+106.33s \| 44.5%)	2:09.59 (+109.53s \| 45.8%)	2:05.79 (+113.33s \| 47.4%)	2:08.19 (+110.93s \| 46.4%)	N/A	2:03.49 (+115.63s \| 48.4%)	3:08.29 (+50.83s \| 21.3%)

Progression

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

Select the distance and stroke

Compare with another swimmer

View this profile

Meets

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

Alto Dec 6 7 CBA

12/06/2025

Palo Alto

50 Y Fly

46.51

+1.48s

B: 46.49 (+0.02s | 0.0%)

100 Y IM

1:39.10

+1.84s

BB: 1:29.69 (+9.41s | 9.5%)

50 IM

45.02

100 IM

54.08

1:39.10

100 IM

1:39.10

50 Y Free

39.46

-1.16s (New PB)

B: 38.19 (+1.27s | 3.2%)

200 Y Free

3:16.33

B: 3:09.49 (+6.84s | 3.5%)

50 Free

42.05

100 Free

51.88

1:33.93

100 Free

1:33.93

150 Free

52.56

2:26.49

200 Free

49.83

3:16.32

100 Free

1:42.39

50 Y Back

44.47

-3.05s (New PB)

BB: 42.89 (+1.58s | 3.6%)

100 Y Free

1:32.38

-7.07s (New PB)

B: 1:27.99 (+4.39s | 4.8%)

50 Free

43.65

100 Free

48.73

1:32.38

100 Free

1:32.38

2025 SUNN Fall Classic

10/25/2025

Sunnyvale

50 Y Back

47.52

-1.10s (New PB)

BB: 42.89 (+4.63s | 9.7%)

500 Y Free

8:30.32

B: 8:24.29 (+6.03s | 1.2%)

50 Y Free

40.62

-1.73s (New PB)

B: 38.19 (+2.43s | 6.0%)

100 Y IM

1:37.26

BB: 1:29.69 (+7.57s | 7.8%)

Alto Last Splash

07/19/2025

Fremont

200 M IM

3:59.12

BB: 3:43.69 (+15.43s | 6.5%)

50 M Free

46.27

+0.62s

B: 43.89 (+2.38s | 5.1%)

100 M Fly

2:10.21

B: 2:09.49 (+0.72s | 0.6%)

100 M Breast

2:12.23

BB: 1:59.19 (+13.04s | 9.9%)

50 M Fly

49.70

-11.49s (New PB)

BB: 46.39 (+3.31s | 6.7%)

50 M Breast

1:02.18

B: 1:00.89 (+1.29s | 2.1%)

Alto Spring Jam Meet

04/19/2025

Fremont

50 M Free

45.65

B: 43.89 (+1.76s | 3.9%)

100 M Free

1:43.20

B: 1:40.99 (+2.21s | 2.1%)

50 M Back

53.96

BB: 49.29 (+4.67s | 8.7%)

200 M Free

3:39.44

B: 3:36.69 (+2.75s | 1.3%)

50 M Fly

1:01.19

B: 52.29 (+8.90s | 14.5%)

Alto Rock The Blocks Invitational

03/29/2025

Palo Alto

50 Y Free

43.51

+1.16s

B: 38.19 (+5.32s | 12.2%)

50 Y Fly

45.03

BB: 41.29 (+3.74s | 8.3%)

100 Y Free

1:39.45

B: 1:27.99 (+11.46s | 11.5%)

50 Free

44.87

100 Free

54.58

1:39.45

100 Free

1:39.45

50 Y Breast

54.06

-6.01s (New PB)

B: 53.39 (+0.67s | 1.2%)

50 Y Back

48.62

-6.95s (New PB)

B: 48.29 (+0.33s | 0.7%)

De Anza C B A+

02/22/2025

Saratoga

100 Y Back

1:56.23

B: 1:40.69 (+15.54s | 13.4%)

50 Y Free

42.98

+0.63s

B: 38.19 (+4.79s | 11.1%)

25 Y Fly

23.42

+1.10s

Alto Swim Club Valentine Classic

02/01/2025

Palo Alto

25 Y Free

19.05

-1.24s (New PB)

50 Y Back

55.57

-10.78s (New PB)

B: 48.29 (+7.28s | 13.1%)

50 Y Free

42.35

-1.45s (New PB)

B: 38.19 (+4.16s | 9.8%)

25 Y Fly

23.85

+1.53s

25 Y Breast

25.17

+0.19s

Z1N SC Championship

01/25/2025

Sunnyvale

25 Y Breast

24.98

25 Y Fly

22.32

50 Y Free

43.80

-1.22s (New PB)

B: 38.19 (+5.61s | 12.8%)

Alto Fall Frolic Meet

11/23/2024

Palo Alto

50 Y Back

1:06.35

B: 48.29 (+18.06s | 27.2%)

50 Y Breast

1:00.07

B: 53.39 (+6.68s | 11.1%)

50 Y Free

53.22

+8.20s

B: 38.19 (+15.03s | 28.2%)

Alto Go The Distance

11/09/2024

Palo Alto

50 Y Free

45.02

B: 38.19 (+6.83s | 15.2%)

25 Y Free

20.29

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.

Event	Best Time	Age Group Championship	Far Western	Senior Open	Senior 2	Western Zone Sr.	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	NATIONAL	U.S Olympic Team Trials	SouthWestern Age Group Regional
Free 50 M	45.65	35.49 (+10.16s \| 22.3%)	34.39 (+11.26s \| 24.7%)	30.19 (+15.46s \| 33.9%)	27.89 (+17.76s \| 38.9%)	26.79 (+18.86s \| 41.3%)	25.89 (+19.76s \| 43.3%)	24.59 (+21.06s \| 46.1%)	24.59 (+21.06s \| 46.1%)	24.29 (+21.36s \| 46.8%)	23.39 (+22.26s \| 48.8%)	23.79 (+21.86s \| 47.9%)	N/A	22.79 (+22.86s \| 50.1%)	34.59 (+11.06s \| 24.2%)
Free 100 M	1:43.20	1:19.49 (+23.71s \| 23.0%)	1:17.09 (+26.11s \| 25.3%)	1:07.39 (+35.81s \| 34.7%)	1:02.19 (+41.01s \| 39.7%)	59.19 (+44.01s \| 42.6%)	56.09 (+47.11s \| 45.6%)	53.59 (+49.61s \| 48.1%)	53.59 (+49.61s \| 48.1%)	52.59 (+50.61s \| 49.0%)	50.99 (+52.21s \| 50.6%)	51.99 (+51.21s \| 49.6%)	N/A	49.99 (+53.21s \| 51.6%)	1:16.89 (+26.31s \| 25.5%)
Free 200 M	3:39.44	2:49.89 (+49.55s \| 22.6%)	2:46.39 (+53.05s \| 24.2%)	2:27.89 (+71.55s \| 32.6%)	2:16.49 (+82.95s \| 37.8%)	2:09.29 (+90.15s \| 41.1%)	2:03.09 (+96.35s \| 43.9%)	1:57.79 (+101.65s \| 46.3%)	1:57.79 (+101.65s \| 46.3%)	1:55.49 (+103.95s \| 47.4%)	1:52.19 (+107.25s \| 48.9%)	1:54.09 (+105.35s \| 48.0%)	N/A	1:49.99 (+109.45s \| 49.9%)	2:44.69 (+54.75s \| 24.9%)
Back 50 M	53.96	42.99 (+10.97s \| 20.3%)	40.79 (+13.17s \| 24.4%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	41.59 (+12.37s \| 22.9%)
Breast 50 M	1:02.18	46.99 (+15.19s \| 24.4%)	45.59 (+16.59s \| 26.7%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	46.29 (+15.89s \| 25.6%)
Breast 100 M	2:12.23	1:42.69 (+29.54s \| 22.3%)	1:39.19 (+33.04s \| 25.0%)	1:25.49 (+46.74s \| 35.3%)	1:18.89 (+53.34s \| 40.3%)	1:13.79 (+58.44s \| 44.2%)	1:11.29 (+60.94s \| 46.1%)	1:08.19 (+64.04s \| 48.4%)	1:08.19 (+64.04s \| 48.4%)	1:06.59 (+65.64s \| 49.6%)	1:04.09 (+68.14s \| 51.5%)	1:05.29 (+66.94s \| 50.6%)	N/A	1:02.19 (+70.04s \| 53.0%)	1:40.19 (+32.04s \| 24.2%)
Fly 50 M	49.70	40.19 (+9.51s \| 19.1%)	38.49 (+11.21s \| 22.6%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	39.19 (+10.51s \| 21.1%)
Fly 100 M	2:10.21	1:34.29 (+35.92s \| 27.6%)	1:30.29 (+39.92s \| 30.7%)	1:12.69 (+57.52s \| 44.2%)	1:07.09 (+63.12s \| 48.5%)	1:03.59 (+66.62s \| 51.2%)	1:00.89 (+69.32s \| 53.2%)	57.99 (+72.22s \| 55.5%)	57.99 (+72.22s \| 55.5%)	57.09 (+73.12s \| 56.2%)	55.09 (+75.12s \| 57.7%)	55.99 (+74.22s \| 57.0%)	N/A	53.59 (+76.62s \| 58.8%)	1:30.59 (+39.62s \| 30.4%)
IM 200 M	3:59.12	3:14.29 (+44.83s \| 18.7%)	3:09.69 (+49.43s \| 20.7%)	2:45.49 (+73.63s \| 30.8%)	2:32.79 (+86.33s \| 36.1%)	2:25.09 (+94.03s \| 39.3%)	2:18.39 (+100.73s \| 42.1%)	2:12.79 (+106.33s \| 44.5%)	2:12.79 (+106.33s \| 44.5%)	2:09.59 (+109.53s \| 45.8%)	2:05.79 (+113.33s \| 47.4%)	2:08.19 (+110.93s \| 46.4%)	N/A	2:03.49 (+115.63s \| 48.4%)	3:08.29 (+50.83s \| 21.3%)