Leif Chang

Age: 10 years old
Age Category: 10 & under
Team: Rancho San Dieguito | San Diego-Imperial Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Rancho San Dieguito

San Diego-Imperial Swimming

Western Zone

USA

Free 50 Y

37.27

03/21/2026

BB: 34.59 (+2.68s | 7.2%)

1,000+

Free 100 Y

1:27.36

Analysis

04/11/2026

BB: 1:18.89 (+8.47s | 9.7%)

1,000+

50 Free

39.63

100 Free

47.73

1:27.36

100 Free

1:27.36

Free 200 Y

3:09.12

Analysis

04/11/2026

BB: 2:50.59 (+18.53s | 9.8%)

742

1,000+

50 Free

40.50

100 Free

49.39

1:29.89

100 Free

1:29.89

150 Free

52.17

2:22.06

200 Free

47.06

3:09.12

100 Free

1:39.23

Back 50 Y

52.56

04/11/2026

B: 48.29 (+4.27s | 8.1%)

100

1,000+

Back 100 Y

2:08.44

Analysis

01/10/2026

B: 1:40.69 (+27.75s | 21.6%)

1,000+

Breast 50 Y

51.66

04/11/2026

BB: 47.69 (+3.97s | 7.7%)

1,000+

Breast 100 Y

1:51.50

Analysis

03/21/2026

BB: 1:42.29 (+9.21s | 8.3%)

891

1,000+

Fly 50 Y

48.89

03/21/2026

B: 46.49 (+2.40s | 4.9%)

1,000+

Fly 100 Y

1:58.97

Analysis

04/11/2026

B: 1:53.49 (+5.48s | 4.6%)

631

1,000+

50 Fly

51.00

100 Fly

1:07.97

1:58.97

100 Fly

1:58.97

IM 100 Y

1:42.51

Analysis

03/21/2026

B: 1:39.69 (+2.82s | 2.8%)

1,000+

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Rancho San Dieguito	San Diego-Imperial Swimming	Western Zone	USA

Above are the fastest times that Leif Chang has achieved in his swimming career. For each event, you can find Leif's best time, the corresponding time standard, as well as how much faster Leif needs to be to reach the next level. The last columns provide Leif rankings at the team and LSC levels. These rankings are based on the Leif'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	37.27	22.19 (+15.08s \| 40.5%)	21.29 (+15.98s \| 42.9%)	21.29 (+15.98s \| 42.9%)	20.59 (+16.68s \| 44.8%)	20.09 (+17.18s \| 46.1%)	20.39 (+16.88s \| 45.3%)	30.49 (+6.78s \| 18.2%)
Free 100 Y	1:27.36	48.19 (+39.17s \| 44.8%)	46.39 (+40.97s \| 46.9%)	46.39 (+40.97s \| 46.9%)	45.09 (+42.27s \| 48.4%)	43.49 (+43.87s \| 50.2%)	44.39 (+42.97s \| 49.2%)	1:07.19 (+20.17s \| 23.1%)
Free 200 Y	3:09.12	1:45.79 (+83.33s \| 44.1%)	1:41.59 (+87.53s \| 46.3%)	1:41.59 (+87.53s \| 46.3%)	1:38.79 (+90.33s \| 47.8%)	1:36.49 (+92.63s \| 49.0%)	1:38.09 (+91.03s \| 48.1%)	2:24.99 (+44.13s \| 23.3%)
Back 50 Y	52.56	N/A	N/A	N/A	N/A	N/A	N/A	36.29 (+16.27s \| 31.0%)
Back 100 Y	2:08.44	53.89 (+74.55s \| 58.0%)	51.49 (+76.95s \| 59.9%)	51.49 (+76.95s \| 59.9%)	49.39 (+79.05s \| 61.5%)	47.59 (+80.85s \| 62.9%)	48.89 (+79.55s \| 61.9%)	1:16.59 (+51.85s \| 40.4%)
Breast 50 Y	51.66	N/A	N/A	N/A	N/A	N/A	N/A	40.29 (+11.37s \| 22.0%)
Breast 100 Y	1:51.50	1:00.89 (+50.61s \| 45.4%)	57.99 (+53.51s \| 48.0%)	57.99 (+53.51s \| 48.0%)	55.89 (+55.61s \| 49.9%)	54.19 (+57.31s \| 51.4%)	55.29 (+56.21s \| 50.4%)	1:26.29 (+25.21s \| 22.6%)
Fly 50 Y	48.89	N/A	N/A	N/A	N/A	N/A	N/A	34.69 (+14.20s \| 29.0%)
Fly 100 Y	1:58.97	52.89 (+66.08s \| 55.5%)	50.59 (+68.38s \| 57.5%)	50.59 (+68.38s \| 57.5%)	48.99 (+69.98s \| 58.8%)	47.79 (+71.18s \| 59.8%)	48.39 (+70.58s \| 59.3%)	1:19.89 (+39.08s \| 32.8%)
IM 100 Y	1:42.51	N/A	N/A	N/A	N/A	N/A	N/A	1:16.99 (+25.52s \| 24.9%)

Long Course Distance

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

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

SI 2026 RSD All Ages BC Meet

04/11/2026

Solana Beach

100 Y IM

1:48.15

+5.64s

B: 1:39.69 (+8.46s | 7.8%)

50 IM

53.90

100 IM

54.25

1:48.15

100 IM

1:48.15

50 Y Back

52.56

-7.30s (New PB)

B: 48.29 (+4.27s | 8.1%)

100 Y Breast

1:54.75

+3.25s

B: 1:54.09 (+0.66s | 0.6%)

50 Breast

54.63

100 Breast

1:00.12

1:54.75

100 Breast

1:54.75

50 Y Fly

51.74

+2.85s

B: 46.49 (+5.25s | 10.1%)

50 Y Free

38.39

+1.12s

B: 38.19 (+0.20s | 0.5%)

100 Y Free

1:27.36

-7.33s (New PB)

BB: 1:18.89 (+8.47s | 9.7%)

50 Free

39.63

100 Free

47.73

1:27.36

100 Free

1:27.36

50 Y Breast

51.66

BB: 47.69 (+3.97s | 7.7%)

100 Y Fly

1:58.97

-5.60s (New PB)

B: 1:53.49 (+5.48s | 4.6%)

50 Fly

51.00

100 Fly

1:07.97

1:58.97

100 Fly

1:58.97

200 Y Free

3:09.12

BB: 2:50.59 (+18.53s | 9.8%)

50 Free

40.50

100 Free

49.39

1:29.89

100 Free

1:29.89

150 Free

52.17

2:22.06

200 Free

47.06

3:09.12

100 Free

1:39.23

2026 SI CAST All Ages NTS Meet South

03/21/2026

La Mesa

50 Y Fly

48.89

-16.81s (New PB)

B: 46.49 (+2.40s | 4.9%)

50 Y Free

37.27

-8.73s (New PB)

BB: 34.59 (+2.68s | 7.2%)

100 Y IM

1:42.51

-13.70s (New PB)

B: 1:39.69 (+2.82s | 2.8%)

100 Y Breast

1:51.50

-9.70s (New PB)

BB: 1:42.29 (+9.21s | 8.3%)

2026 SI BAY 14U Rising Stars 3

01/10/2026

Rancho Santa Fe

100 Y Fly

2:04.57

B: 1:53.49 (+11.08s | 8.9%)

100 Y Back

2:08.44

B: 1:40.69 (+27.75s | 21.6%)

100 Y Free

1:34.69

-16.27s (New PB)

B: 1:27.99 (+6.70s | 7.1%)

100 Y IM

1:56.21

-13.32s (New PB)

B: 1:39.69 (+16.52s | 14.2%)

100 Y Breast

2:01.20

-9.17s (New PB)

B: 1:54.09 (+7.11s | 5.9%)

2025 SI SDSA All Ages NTS Meet

11/08/2025

Coronado

100 Y Breast

2:13.99

+3.62s

B: 1:54.09 (+19.90s | 14.9%)

50 Breast

1:03.85

100 Breast

1:10.14

2:13.99

100 Breast

2:13.99

50 Y Fly

1:05.70

B: 46.49 (+19.21s | 29.2%)

50 Y Free

46.76

+0.76s

B: 38.19 (+8.57s | 18.3%)

2025 SI RSD All Ages B C Meet

10/11/2025

Solana Beach

50 Y Free

46.00

-2.54s (New PB)

B: 38.19 (+7.81s | 17.0%)

50 Y Back

59.86

B: 48.29 (+11.57s | 19.3%)

100 Y Breast

2:10.37

B: 1:54.09 (+16.28s | 12.5%)

100 Y IM

2:09.53

B: 1:39.69 (+29.84s | 23.0%)

2025 SI PS Freestyle Festival Sat

09/20/2025

Poway

50 Y Free

48.54

B: 38.19 (+10.35s | 21.3%)

100 Y Free

1:50.96

B: 1:27.99 (+22.97s | 20.7%)

50 Free

51.02

100 Free

59.94

1:50.96

100 Free

1:50.96

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.