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BOSTON MARATHON 2025

Shaelyn Silverman

Bib: 14316•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:38
Rank: #18431
Start → 5K
8:15/mi
25:38 split
10K· 6.21 mi
51:18
Rank: #18352 (+79)
5K → 10K
8:16/mi
25:40 split
15K· 9.32 mi
1:16:44
Rank: #17990 (+362)
10K → 15K
8:11/mi
25:26 split
20K· 12.43 mi
1:42:23
Rank: #17604 (+386)
15K → 20K
8:15/mi
25:39 split
Half· 13.11 mi
1:47:56
Rank: #17566 (+38)
20K → Half
8:08/mi
5:33 split
25K· 15.53 mi
2:08:32
Rank: #17450 (+116)
Half → 25K
8:30/mi
20:36 split
30K· 18.64 mi
2:35:24
Rank: #17066 (+384)
25K → 30K
8:39/mi
26:52 split
20M
2:47:29
Rank: #16981 (+85)
30K → 20M
8:54/mi
12:05 split
21M
2:57:13
Rank: #16942 (+39)
20M → 21M
9:44/mi
9:44 split
35K· 21.75 mi
3:05:32
Rank: #17485 (-543)
21M → 35K
11:07/mi
8:19 split
23M
3:17:14
Rank: #17514 (-29)
35K → 23M
9:21/mi
11:42 split
24M
3:27:03
Rank: #17695 (-181)
23M → 24M
9:49/mi
9:49 split
40K· 24.85 mi
3:34:47
Rank: #17647 (+48)
24M → 40K
9:03/mi
7:44 split
25.2M
3:38:07
Rank: #17605 (+42)
40K → 25.2M
9:40/mi
3:20 split
Finish· 26.22 mi
3:46:56
Rank: #17581 (+24)
25.2M → Finish
8:39/mi
8:49 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:56
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:59:00
Pace9:05 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3725:388:1525:38
8:15
-
10K
6.21 mi11:21:1751:188:1525:40
8:16
+0:01
15K
9.32 mi11:46:431:16:448:1425:26
8:11
-0:05
20K
12.43 mi12:12:221:42:238:1425:39
8:15
+0:04
Half
13.11 mi12:17:551:47:568:145:33
8:08
-0:07
25K
15.53 mi12:38:312:08:328:1620:36
8:30
+0:22
30K
18.64 mi13:05:232:35:248:2026:52
8:39
+0:09
20M
20.00 mi13:17:282:47:298:2212:05
8:54
+0:15
21M
21.00 mi13:27:122:57:138:269:44
9:44
+0:50
35K
21.75 mi13:35:313:05:328:328:19
11:07
+1:23
23M
23.00 mi13:47:133:17:148:3511:42
9:21
-1:46
24M
24.00 mi13:57:023:27:038:389:49
9:49
+0:28
40K
24.85 mi14:04:463:34:478:387:44
9:03
-0:46
25.2M
25.20 mi14:08:063:38:078:393:20
9:40
+0:37
Finish
26.22 mi14:16:553:46:568:408:49
8:39
-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

8:08 /mi

Average Pace

8:40 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

30:59

14% of race

Time at Steady Pace

2:33:03

67% of race

Time at Slower Pace

42:54

19% of race

Average Pace: 8:39 /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 mi10:55:3725:388:1525:38
8:15
#18431
10K
6.21 mi11:21:1751:188:1525:40
8:16
#18352
15K
9.32 mi11:46:431:16:448:1425:26
8:11
#17990
20K
12.43 mi12:12:221:42:238:1425:39
8:15
#17604
Half
13.11 mi12:17:551:47:568:145:33
8:08
#17566
25K
15.53 mi12:38:312:08:328:1620:36
8:30
#17450
30K
18.64 mi13:05:232:35:248:2026:52
8:39
#17066
20M
20.00 mi13:17:282:47:298:2212:05
8:54
#16981
21M
21.00 mi13:27:122:57:138:269:44
9:44
#16942
35K
21.75 mi13:35:313:05:328:328:19
11:07
#17485
23M
23.00 mi13:47:133:17:148:3511:42
9:21
#17514
24M
24.00 mi13:57:023:27:038:389:49
9:49
#17695
40K
24.85 mi14:04:463:34:478:387:44
9:03
#17647
25.2M
25.20 mi14:08:063:38:078:393:20
9:40
#17605
Finish
26.22 mi14:16:553:46:568:408:49
8:39
#17581
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi184316596659617327(Top 61%)5918(Top 48%)5918(Top 108%)
10K6.21 mi3.10 mi18352+796535+616535+6118318(Top 64%)6497(Top 53%)6497(Top 119%)
15K9.32 mi3.11 mi17990+3626327+2086327+20817327(Top 61%)5918(Top 48%)5918(Top 108%)
20K12.43 mi3.11 mi17604+3866101+2266101+22616679(Top 59%)5594(Top 46%)5594(Top 102%)
Half13.11 mi0.68 mi17566+386073+286073+2816936(Top 60%)5739(Top 47%)5739(Top 105%)
25K15.53 mi2.42 mi17450+1166026+476026+4717197(Top 61%)5974(Top 49%)5974(Top 109%)
30K18.64 mi3.11 mi17066+3845860+1665860+16615703(Top 55%)5289(Top 43%)5289(Top 97%)
20M20.00 mi1.36 mi16981+855832+285832+2816214(Top 57%)5733(Top 47%)5733(Top 105%)
21M21.00 mi1.00 mi16942+395843-115843-1117201(Top 61%)6373(Top 52%)6373(Top 117%)
35K21.75 mi0.75 mi17485-5436181-3386181-33824474(Top 86%)10313(Top 84%)10313(Top 189%)
23M23.00 mi1.25 mi17514-296232-516232-5118001(Top 63%)6981(Top 57%)6981(Top 128%)
24M24.00 mi1.00 mi17695-1816360-1286360-12820782(Top 73%)8490(Top 69%)8490(Top 155%)
40K24.85 mi0.85 mi17647+486360636016598(Top 58%)6368(Top 52%)6368(Top 116%)
25.2M25.20 mi0.35 mi17605+426348+126348+1215511(Top 55%)5835(Top 48%)5835(Top 107%)
Finish26.22 mi1.02 mi17581+246351-36351-317201(Top 61%)6663(Top 54%)6663(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17327

Females

5918

F18-39

5918

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18318

Females

6497

F18-39

6497

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17327

Females

5918

F18-39

5918

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16679

Females

5594

F18-39

5594

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16936

Females

5739

F18-39

5739

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

17197

Females

5974

F18-39

5974

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15703

Females

5289

F18-39

5289

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16214

Females

5733

F18-39

5733

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17201

Females

6373

F18-39

6373

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24474

Females

10313

F18-39

10313

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

18001

Females

6981

F18-39

6981

23M→24M

23.0 - 24.0 mi

Top 73%
×6story building
+12ft-82ft

Overall

20782

Females

8490

F18-39

8490

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16598

Females

6368

F18-39

6368

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15511

Females

5835

F18-39

5835

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17201

Females

6663

F18-39

6663

Passing Analysis

Category:
Athletes Passed
2457
Passed By
1607
Net Change
+850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18431
5K → 10K291212+79#18431#18352
10K → 15K40644+362#18352#17990
15K → 20K42539+386#17990#17604
20K → Half6022+38#17604#17566
Half → 25K219103+116#17566#17450
25K → 30K43046+384#17450#17066
30K → 20M13550+85#17066#16981
20M → 21M13596+39#16981#16942
21M → 35K9552-543#16942#17485
35K → 23M106135-29#17485#17514
23M → 24M34215-181#17514#17695
24M → 40K8537+48#17695#17647
40K → 25.2M5210+42#17647#17605
25.2M → Finish7046+24#17605#17581
TOTALS24571607+850
📊

Passing Visuals

Category:
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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