Siena DeMarco

Age: 10 years old
Age Category: 10 & under
Team: Potomac Marlins | Potomac Valley Swimming

Personal Best

Short course distance

Event

Time

Age

Date

Standard

Next Standard

Potomac Marlins

Potomac Valley Swimming

Eastern Zone

USA

Free 50 Y

37.71

10

02/20/2026

B

BB: 35.99 (+1.72s | 4.6%)

Rankings

Free 100 Y

1:37.05

Analysis

10

11/14/2025

B: 1:30.79 (+6.26s | 6.5%)

Rankings

50 Free

44.96

100 Free

52.09

1:37.05

100 Free

1:37.05

Back 50 Y

46.74

10

12/12/2025

B

BB: 43.29 (+3.45s | 7.4%)

Rankings

Breast 50 Y

1:01.14

10

12/12/2025

B: 54.59 (+6.55s | 10.7%)

Rankings

Breast 100 Y

1:59.72

Analysis

10

02/20/2026

B

BB: 1:46.89 (+12.83s | 10.7%)

Rankings

50 Breast

58.83

100 Breast

1:00.89

1:59.72

100 Breast

1:59.72

Fly 50 Y

53.55

10

12/12/2025

B: 48.39 (+5.16s | 9.6%)

Rankings

IM 100 Y

1:42.49

Analysis

10

02/20/2026

B

BB: 1:33.19 (+9.30s | 9.1%)

Rankings

50 IM

47.58

100 IM

54.91

1:42.49

100 IM

1:42.49

Long course distance

Event	Time		Age	Date	Standard	Next Standard	Potomac Marlins	Potomac Valley Swimming	Eastern Zone	USA

Above are the fastest times that Siena DeMarco has achieved in her swimming career. For each event, you can find Siena's best time, the corresponding time standard, as well as how much faster Siena needs to be to reach the next level. The last columns provide Siena rankings at the team and LSC levels. These rankings are based on the Siena'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
Got the Bonus time standard (extra events for qualified swimmers)

Short Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ
Free 50 Y	37.71	24.89 (+12.82s \| 34.0%) 25.69 (+12.02s \| 31.9%)	23.89 (+13.82s \| 36.6%)	23.89 (+13.82s \| 36.6%)	23.29 (+14.42s \| 38.2%)	22.49 (+15.22s \| 40.4%)	22.79 (+14.92s \| 39.6%)
Free 100 Y	1:37.05	53.99 (+43.06s \| 44.4%) 55.49 (+41.56s \| 42.8%)	51.89 (+45.16s \| 46.5%)	51.89 (+45.16s \| 46.5%)	50.39 (+46.66s \| 48.1%)	48.99 (+48.06s \| 49.5%)	49.69 (+47.36s \| 48.8%)
Back 50 Y	46.74	27.59 (+19.15s \| 41.0%) 28.29 (+18.45s \| 39.5%)	N/A	N/A	N/A	24.39 (+22.35s \| 47.8%)	N/A
Breast 50 Y	1:01.14	30.99 (+30.15s \| 49.3%) 31.89 (+29.25s \| 47.8%)	N/A	N/A	N/A	27.99 (+33.15s \| 54.2%)	N/A
Breast 100 Y	1:59.72	1:07.59 (+52.13s \| 43.5%) 1:09.49 (+50.23s \| 42.0%)	1:05.49 (+54.23s \| 45.3%)	1:05.49 (+54.23s \| 45.3%)	1:03.09 (+56.63s \| 47.3%)	1:00.79 (+58.93s \| 49.2%)	1:02.79 (+56.93s \| 47.6%)
Fly 50 Y	53.55	27.09 (+26.46s \| 49.4%) 27.69 (+25.86s \| 48.3%)	N/A	N/A	N/A	24.09 (+29.46s \| 55.0%)	N/A
IM 100 Y	1:42.49	N/A	N/A	N/A	N/A	N/A	N/A

Long Course Distance

Event	Best Time	Sectionals	18U Spring Cup	Futures	Jrs - Winter	US Open	Summer Champ	U.S. Olympic Team Trials

Progression

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

Event

Time

Progress

Standard

Next Standard

Age

Heat

Lane

Ranking

2026 FXFX Forty Niner

02/20/2026

Fairfax / Manassas

100 Y IM

1:42.49

-7.28s (New PB)

B

BB: 1:33.19 (+9.30s | 9.1%)

10

6

5

1

50 IM

47.58

100 IM

54.91

1:42.49

100 IM

1:42.49

100 Y Breast

1:59.72

-13.61s (New PB)

B

BB: 1:46.89 (+12.83s | 10.7%)

10

5

6

50 Breast

58.83

100 Breast

1:00.89

1:59.72

100 Breast

1:59.72

50 Y Fly

53.81

+0.26s

B: 48.39 (+5.42s | 10.1%)

10

6

3

50 Y Free

37.71

-2.19s (New PB)

B

BB: 35.99 (+1.72s | 4.6%)

10

9

4

2025 MAKO HOLIDAY INVITATIONAL

12/12/2025

SPRINGFIELD

50 Y Free

39.90

-1.70s (New PB)

B: 39.79 (+0.11s | 0.3%)

9

1

6

4

50 Y Breast

1:01.14

-0.24s (New PB)

B: 54.59 (+6.55s | 10.7%)

9

6

4

50 Y Fly

53.55

-4.62s (New PB)

B: 48.39 (+5.16s | 9.6%)

9

4

7

50 Y Back

46.74

-6.28s (New PB)

B

BB: 43.29 (+3.45s | 7.4%)

9

5

3

2025 PV November Open PWCS

11/14/2025

Manassas

100 Y Free

1:37.05

B: 1:30.79 (+6.26s | 6.5%)

9

8

3

4

50 Free

44.96

100 Free

52.09

1:37.05

100 Free

1:37.05

100 Y IM

1:49.77

B: 1:44.29 (+5.48s | 5.0%)

9

1

50 IM

50.70

100 IM

59.07

1:49.77

100 IM

1:49.77

100 Y Breast

2:13.33

B: 2:00.29 (+13.04s | 9.8%)

9

8

6

50 Breast

1:02.46

100 Breast

1:10.87

2:13.33

100 Breast

2:13.33

2025 PV MAKO FALL INVITATIONAL

09/27/2025

Fairfax

50 Y Breast

1:01.38

B: 54.59 (+6.79s | 11.1%)

9

4

5

2

50 Y Back

53.02

B: 48.59 (+4.43s | 8.4%)

9

3

5

4

50 Y Free

41.60

B: 39.79 (+1.81s | 4.4%)

9

5

4

50 Y Fly

58.17

B: 48.39 (+9.78s | 16.8%)

9

4

7