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BOSTON MARATHON 2025

Karen Silver

Bib: 19652•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 34%
Masters (Masters Women)
#0 / 6759
Top 19%
Division (F40-44)
#0 / 1718
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:35
Rank: #15830
Start → 5K
24:35 | 7:55/mi
10K· 6.21 mi
49:22
Rank: #16067 (-237)
5K → 10K
24:47 | 7:59/mi
15K· 9.32 mi
1:13:59
Rank: #15817 (+250)
10K → 15K
24:37 | 7:55/mi
20K· 12.43 mi
1:38:29
Rank: #15322 (+495)
15K → 20K
24:30 | 7:53/mi
Half· 13.11 mi
1:43:44
Rank: #15201 (+121)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
2:02:57
Rank: #14857 (+344)
Half → 25K
19:13 | 7:56/mi
30K· 18.64 mi
2:28:10
Rank: #14269 (+588)
25K → 30K
25:13 | 8:07/mi
20M
2:39:24
Rank: #14064 (+205)
30K → 20M
11:14 | 8:16/mi
21M
2:48:10
Rank: #13913 (+151)
20M → 21M
8:46 | 8:46/mi
35K· 21.75 mi
2:54:05
Rank: #13814 (+99)
21M → 35K
5:55 | 7:55/mi
23M
3:04:35
Rank: #13718 (+96)
35K → 23M
10:30 | 8:23/mi
24M
3:12:35
Rank: #13590 (+128)
23M → 24M
8:00 | 8:00/mi
40K· 24.85 mi
3:19:53
Rank: #13587 (+3)
24M → 40K
7:18 | 8:32/mi
25.2M
3:23:06
Rank: #13584 (+3)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:31:35
Rank: #13640 (-56)
25.2M → Finish
8:29 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:44
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:47:51
Pace8:14 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0224:357:5524:35
7:55
-
10K
6.21 mi11:40:4949:227:5724:47
7:59
+0:04
15K
9.32 mi12:05:261:13:597:5624:37
7:55
-0:04
20K
12.43 mi12:29:561:38:297:5524:30
7:53
-0:02
Half
13.11 mi12:35:111:43:447:555:15
7:42
-0:11
25K
15.53 mi12:54:242:02:577:5519:13
7:56
+0:14
30K
18.64 mi13:19:372:28:107:5725:13
8:07
+0:11
20M
20.00 mi13:30:512:39:247:5811:14
8:16
+0:09
21M
21.00 mi13:39:372:48:108:008:46
8:46
+0:30
35K
21.75 mi13:45:322:54:058:005:55
7:55
-0:51
23M
23.00 mi13:56:023:04:358:0210:30
8:23
+0:28
24M
24.00 mi14:04:023:12:358:018:00
8:00
-0:23
40K
24.85 mi14:11:203:19:538:037:18
8:32
+0:32
25.2M
25.20 mi14:14:333:23:068:043:13
9:20
+0:48
Finish
26.22 mi14:23:023:31:358:058:29
8:19
-1:01

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:42 /mi

Average Pace

8:05 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:15

2% of race

Time at Steady Pace

2:36:50

74% of race

Time at Slower Pace

49:30

23% of race

Average Pace: 8:04 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:16:0224:357:5524:35
7:55
#15830
10K
6.21 mi11:40:4949:227:5724:47
7:59
#16067
15K
9.32 mi12:05:261:13:597:5624:37
7:55
#15817
20K
12.43 mi12:29:561:38:297:5524:30
7:53
#15322
Half
13.11 mi12:35:111:43:447:555:15
7:42
#15201
25K
15.53 mi12:54:242:02:577:5519:13
7:56
#14857
30K
18.64 mi13:19:372:28:107:5725:13
8:07
#14269
20M
20.00 mi13:30:512:39:247:5811:14
8:16
#14064
21M
21.00 mi13:39:372:48:108:008:46
8:46
#13913
35K
21.75 mi13:45:322:54:058:005:55
7:55
#13814
23M
23.00 mi13:56:023:04:358:0210:30
8:23
#13718
24M
24.00 mi14:04:023:12:358:018:00
8:00
#13590
40K
24.85 mi14:11:203:19:538:037:18
8:32
#13587
25.2M
25.20 mi14:14:333:23:068:043:13
9:20
#13584
Finish
26.22 mi14:23:023:31:358:058:29
8:19
#13640
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi158305039503915422(Top 54%)4816(Top 39%)4816(Top 280%)
10K6.21 mi3.10 mi16067-2375180-1415180-14116295(Top 57%)5302(Top 43%)5302(Top 309%)
15K9.32 mi3.11 mi15817+2505022+1585022+15815422(Top 54%)4816(Top 39%)4816(Top 280%)
20K12.43 mi3.11 mi15322+4954761+2614761+26113978(Top 49%)4084(Top 33%)4084(Top 238%)
Half13.11 mi0.68 mi15201+1214698+634698+6313430(Top 47%)3741(Top 31%)3741(Top 218%)
25K15.53 mi2.42 mi14857+3444541+1574541+15713322(Top 47%)3844(Top 31%)3844(Top 224%)
30K18.64 mi3.11 mi14269+5884261+2804261+28012234(Top 43%)3410(Top 28%)3410(Top 198%)
20M20.00 mi1.36 mi14064+2054176+854176+8512304(Top 43%)3604(Top 29%)3604(Top 210%)
21M21.00 mi1.00 mi13913+1514122+544122+5412122(Top 43%)3667(Top 30%)3667(Top 213%)
35K21.75 mi0.75 mi13814+994083+394083+3911702(Top 41%)3504(Top 29%)3504(Top 204%)
23M23.00 mi1.25 mi13718+964068+154068+1512608(Top 44%)4057(Top 33%)4057(Top 236%)
24M24.00 mi1.00 mi13590+1284030+384030+3811282(Top 40%)3462(Top 28%)3462(Top 202%)
40K24.85 mi0.85 mi13587+34057-274057-2713684(Top 48%)4795(Top 39%)4795(Top 279%)
25.2M25.20 mi0.35 mi13584+34061-44061-413651(Top 48%)4831(Top 40%)4831(Top 281%)
Finish26.22 mi1.02 mi13640-564120-594120-5915082(Top 53%)5519(Top 45%)5519(Top 321%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

15422

Females

4816

F40-44

4816

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16295

Females

5302

F40-44

5302

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

15422

Females

4816

F40-44

4816

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

13978

Females

4084

F40-44

4084

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

13430

Females

3741

F40-44

3741

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

13322

Females

3844

F40-44

3844

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12234

Females

3410

F40-44

3410

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12304

Females

3604

F40-44

3604

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12122

Females

3667

F40-44

3667

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11702

Females

3504

F40-44

3504

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12608

Females

4057

F40-44

4057

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

11282

Females

3462

F40-44

3462

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13684

Females

4795

F40-44

4795

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13651

Females

4831

F40-44

4831

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

15082

Females

5519

F40-44

5519

Passing Analysis

Category:
Athletes Passed
3207
Passed By
1017
Net Change
+2190
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15830
5K → 10K223460-237#15830#16067
10K → 15K34898+250#16067#15817
15K → 20K51419+495#15817#15322
20K → Half1254+121#15322#15201
Half → 25K37329+344#15201#14857
25K → 30K61224+588#14857#14269
30K → 20M23227+205#14269#14064
20M → 21M18433+151#14064#13913
21M → 35K11314+99#13913#13814
35K → 23M15458+96#13814#13718
23M → 24M15729+128#13718#13590
24M → 40K8481+3#13590#13587
40K → 25.2M3835+3#13587#13584
25.2M → Finish50106-56#13584#13640
TOTALS32071017+2190
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing