Ryonosuke Jefferson

Age: 12 years old
Age Category: 11-12
Team: Dart Swimming | Sierra Nevada Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Dart Swimming

Sierra Nevada Swimming

Western Zone

USA

Free 50 Y

38.48

10

02/07/2025

B: 32.79 (+5.69s | 14.8%)

21

78

1,000+

Free 100 Y

54.45

12

10/18/2025

AAA

AAAA: 53.59 (+0.86s | 1.6%)

1

67

437

50 Free

26.29

100 Free

28.16

54.45

100 Free

54.45

Free 200 Y

1:55.55

13

02/07/2026

AAAA

1

24

124

50 Free

26.57

100 Free

28.15

54.72

100 Free

54.72

150 Free

29.90

1:24.62

200 Free

30.93

1:55.55

100 Free

1:00.83

Free 500 Y

5:17.96

13

02/07/2026

AAA

AAAA: 5:14.99 (+2.97s | 0.9%)

1

24

115

50 Free

28.95

100 Free

32.11

1:01.06

100 Free

1:01.06

150 Free

32.41

1:33.47

200 Free

32.28

2:05.75

100 Free

1:04.69

250 Free

32.41

2:38.16

300 Free

33.17

3:11.33

100 Free

1:05.58

350 Free

32.08

3:43.41

400 Free

32.64

4:16.05

100 Free

1:04.72

450 Free

31.85

4:47.91

500 Free

30.05

5:17.96

100 Free

1:01.90

Free 1650 Y

19:12.37

12

10/18/2025

AAA

AAAA: 18:20.79 (+51.58s | 4.5%)

1

16

74

50 Free

30.75

100 Free

33.60

1:04.35

100 Free

1:04.35

150 Free

34.30

1:38.65

200 Free

34.44

2:13.09

100 Free

1:08.74

250 Free

34.16

2:47.25

300 Free

33.74

3:20.99

100 Free

1:07.90

350 Free

34.38

3:55.37

400 Free

35.05

4:30.42

100 Free

1:09.43

450 Free

34.75

5:05.17

500 Free

34.92

5:40.09

100 Free

1:09.67

550 Free

35.37

6:15.46

600 Free

35.43

6:50.89

100 Free

1:10.80

650 Free

34.59

7:25.48

700 Free

34.76

8:00.24

100 Free

1:09.35

750 Free

35.10

8:35.34

800 Free

34.96

9:10.30

100 Free

1:10.06

850 Free

35.75

9:46.05

900 Free

35.32

10:21.37

100 Free

1:11.07

950 Free

35.41

10:56.78

1000 Free

35.26

11:32.04

100 Free

1:10.67

1050 Free

34.96

12:07.00

1100 Free

35.36

12:42.36

100 Free

1:10.32

1150 Free

34.97

13:17.33

1200 Free

35.81

13:53.14

100 Free

1:10.78

1250 Free

36.04

14:29.18

1300 Free

35.27

15:04.45

100 Free

1:11.31

1350 Free

35.73

15:40.18

1400 Free

34.99

16:15.17

100 Free

1:10.72

1450 Free

35.70

16:50.87

1500 Free

35.49

17:26.36

100 Free

1:11.19

1550 Free

35.70

18:02.06

1600 Free

35.64

18:37.70

100 Free

1:11.34

1650 Free

34.67

19:12.37

Breast 50 Y

47.09

10

07/26/2025

B: 43.49 (+3.60s | 7.6%)

11

48

1,000+

Fly 100 Y

1:00.80

13

02/07/2026

AAA

AAAA: 59.09 (+1.71s | 2.8%)

1

45

270

50 Fly

28.74

100 Fly

32.06

1:00.80

100 Fly

1:00.80

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Dart Swimming	Sierra Nevada Swimming	Western Zone	USA

Above are the fastest times that Ryonosuke Jefferson has achieved in his swimming career. For each event, you can find Ryonosuke's best time, the corresponding time standard, as well as how much faster Ryonosuke needs to be to reach the next level. The last columns provide Ryonosuke rankings at the team and LSC levels. These rankings are based on the Ryonosuke'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	38.48	22.19 (+16.29s \| 42.3%)	21.29 (+17.19s \| 44.7%)	21.29 (+17.19s \| 44.7%)	20.59 (+17.89s \| 46.5%)	20.09 (+18.39s \| 47.8%)	20.39 (+18.09s \| 47.0%)	27.49 (+10.99s \| 28.6%)
Free 100 Y	54.45	48.19 (+6.26s \| 11.5%)	46.39 (+8.06s \| 14.8%)	46.39 (+8.06s \| 14.8%)	45.09 (+9.36s \| 17.2%)	43.49 (+10.96s \| 20.1%)	44.39 (+10.06s \| 18.5%)	59.29 56.69
Free 200 Y	1:55.55	1:45.79 (+9.76s \| 8.4%)	1:41.59 (+13.96s \| 12.1%)	1:41.59 (+13.96s \| 12.1%)	1:38.79 (+16.76s \| 14.5%)	1:36.49 (+19.06s \| 16.5%)	1:38.09 (+17.46s \| 15.1%)	2:09.19 2:03.89
Free 500 Y	5:17.96	4:47.79 (+30.17s \| 9.5%)	4:37.09 (+40.87s \| 12.9%)	4:37.09 (+40.87s \| 12.9%)	4:29.49 (+48.47s \| 15.2%)	4:22.09 (+55.87s \| 17.6%)	4:27.69 (+50.27s \| 15.8%)	5:47.49 5:31.59
Free 1650 Y	19:12.37	16:43.89 (+148.48s \| 12.9%)	16:05.49 (+186.88s \| 16.2%)	16:05.49 (+186.88s \| 16.2%)	15:40.39 (+211.98s \| 18.4%)	15:17.39 (+234.98s \| 20.4%)	15:34.19 (+218.18s \| 18.9%)	20:18.79 19.15.89 (+1133.22s \| 98.3%)
Breast 50 Y	47.09	N/A	N/A	N/A	N/A	N/A	N/A	35.49 (+11.60s \| 24.6%)
Fly 100 Y	1:00.80	52.89 (+7.91s \| 13.0%)	50.59 (+10.21s \| 16.8%)	50.59 (+10.21s \| 16.8%)	48.99 (+11.81s \| 19.4%)	47.79 (+13.01s \| 21.4%)	48.39 (+12.41s \| 20.4%)	1:07.09

Long Course Distance

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

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 PSL Super Finals Invitational

02/07/2026

Pacifica

500 Y Free

5:17.96

A

AA: 5:16.89 (+1.07s | 0.3%)

13

1

7

1

50 Free

28.95

100 Free

32.11

1:01.06

100 Free

1:01.06

150 Free

32.41

1:33.47

200 Free

32.28

2:05.75

100 Free

1:04.69

250 Free

32.41

2:38.16

300 Free

33.17

3:11.33

100 Free

1:05.58

350 Free

32.08

3:43.41

400 Free

32.64

4:16.05

100 Free

1:04.72

450 Free

31.85

4:47.91

500 Free

30.05

5:17.96

100 Free

1:01.90

100 Y Fly

1:00.80

-1.69s (New PB)

BB

A: 1:00.39 (+0.41s | 0.7%)

13

1

4

1

50 Fly

28.74

100 Fly

32.06

1:00.80

100 Fly

1:00.80

200 Y Free

1:55.55

AA

AAA: 1:51.99 (+3.56s | 3.1%)

13

3

7

4

50 Free

26.57

100 Free

28.15

54.72

100 Free

54.72

150 Free

29.90

1:24.62

200 Free

30.93

1:55.55

100 Free

1:00.83

PLS Senior Quad Meet

10/18/2025

Pleasanton

1650 Y Free

19:12.37

AAA

AAAA: 18:20.79 (+51.58s | 4.5%)

12

2

3

8

50 Free

30.75

100 Free

33.60

1:04.35

100 Free

1:04.35

150 Free

34.30

1:38.65

200 Free

34.44

2:13.09

100 Free

1:08.74

250 Free

34.16

2:47.25

300 Free

33.74

3:20.99

100 Free

1:07.90

350 Free

34.38

3:55.37

400 Free

35.05

4:30.42

100 Free

1:09.43

450 Free

34.75

5:05.17

500 Free

34.92

5:40.09

100 Free

1:09.67

550 Free

35.37

6:15.46

600 Free

35.43

6:50.89

100 Free

1:10.80

650 Free

34.59

7:25.48

700 Free

34.76

8:00.24

100 Free

1:09.35

750 Free

35.10

8:35.34

800 Free

34.96

9:10.30

100 Free

1:10.06

850 Free

35.75

9:46.05

900 Free

35.32

10:21.37

100 Free

1:11.07

950 Free

35.41

10:56.78

1000 Free

35.26

11:32.04

100 Free

1:10.67

1050 Free

34.96

12:07.00

1100 Free

35.36

12:42.36

100 Free

1:10.32

1150 Free

34.97

13:17.33

1200 Free

35.81

13:53.14

100 Free

1:10.78

1250 Free

36.04

14:29.18

1300 Free

35.27

15:04.45

100 Free

1:11.31

1350 Free

35.73

15:40.18

1400 Free

34.99

16:15.17

100 Free

1:10.72

1450 Free

35.70

16:50.87

1500 Free

35.49

17:26.36

100 Free

1:11.19

1550 Free

35.70

18:02.06

1600 Free

35.64

18:37.70

100 Free

1:11.34

1650 Free

34.67

19:12.37

100 Y Free

54.45

-26.04s (New PB)

AAA

AAAA: 53.59 (+0.86s | 1.6%)

12

3

2

8

50 Free

26.29

100 Free

28.16

54.45

100 Free

54.45

100 Y Fly

1:02.49

AA

AAAA: 59.09 (+3.40s | 5.4%)

12

3

5

9

50 Fly

29.08

100 Fly

33.41

1:02.49

100 Fly

1:02.49

2025 REAL Championships

07/26/2025

Sonoma

50 Y Breast

47.09

-3.68s (New PB)

BB

A: 42.09 (+5.00s | 10.6%)

10

1

6

4

100 Y Free

1:20.49

B

BB: 1:18.89 (+1.60s | 2.0%)

10

1

3

5

50 Free

40.50

50 Free

40.50

100 Free

39.99

1:20.49

50 Free

39.99

2025 PSL Super Finals Invitational

02/07/2025

Pacifica

50 Y Free

38.48

B: 38.19 (+0.29s | 0.8%)

10

1

7

6

50 Y Breast

50.77

B

BB: 47.69 (+3.08s | 6.1%)

10

1

6

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	SouthWestern Age Group Regional
Free 50 Y	38.48	22.19 (+16.29s \| 42.3%)	21.29 (+17.19s \| 44.7%)	21.29 (+17.19s \| 44.7%)	20.59 (+17.89s \| 46.5%)	20.09 (+18.39s \| 47.8%)	20.39 (+18.09s \| 47.0%)	27.49 (+10.99s \| 28.6%)
Free 100 Y	54.45	48.19 (+6.26s \| 11.5%)	46.39 (+8.06s \| 14.8%)	46.39 (+8.06s \| 14.8%)	45.09 (+9.36s \| 17.2%)	43.49 (+10.96s \| 20.1%)	44.39 (+10.06s \| 18.5%)	59.29 56.69
Free 200 Y	1:55.55	1:45.79 (+9.76s \| 8.4%)	1:41.59 (+13.96s \| 12.1%)	1:41.59 (+13.96s \| 12.1%)	1:38.79 (+16.76s \| 14.5%)	1:36.49 (+19.06s \| 16.5%)	1:38.09 (+17.46s \| 15.1%)	2:09.19 2:03.89
Free 500 Y	5:17.96	4:47.79 (+30.17s \| 9.5%)	4:37.09 (+40.87s \| 12.9%)	4:37.09 (+40.87s \| 12.9%)	4:29.49 (+48.47s \| 15.2%)	4:22.09 (+55.87s \| 17.6%)	4:27.69 (+50.27s \| 15.8%)	5:47.49 5:31.59
Free 1650 Y	19:12.37	16:43.89 (+148.48s \| 12.9%)	16:05.49 (+186.88s \| 16.2%)	16:05.49 (+186.88s \| 16.2%)	15:40.39 (+211.98s \| 18.4%)	15:17.39 (+234.98s \| 20.4%)	15:34.19 (+218.18s \| 18.9%)	20:18.79 19.15.89 (+1133.22s \| 98.3%)
Breast 50 Y	47.09	N/A	N/A	N/A	N/A	N/A	N/A	35.49 (+11.60s \| 24.6%)
Fly 100 Y	1:00.80	52.89 (+7.91s \| 13.0%)	50.59 (+10.21s \| 16.8%)	50.59 (+10.21s \| 16.8%)	48.99 (+11.81s \| 19.4%)	47.79 (+13.01s \| 21.4%)	48.39 (+12.41s \| 20.4%)	1:07.09