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BOSTON MARATHON 2025

Caroline Williams

Bib: 4973•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 10%
Gender (Female)
#0 / 12228
Top 1%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:33
Rank: #7344
Start → 5K
21:33 | 6:56/mi
10K· 6.21 mi
41:44
Rank: #5536 (+1808)
5K → 10K
20:11 | 6:30/mi
15K· 9.32 mi
1:01:18
Rank: #4237 (+1299)
10K → 15K
19:34 | 6:18/mi
20K· 12.43 mi
1:21:15
Rank: #3754 (+483)
15K → 20K
19:57 | 6:25/mi
Half· 13.11 mi
1:25:35
Rank: #3707 (+47)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:41:16
Rank: #3512 (+195)
Half → 25K
15:41 | 6:28/mi
30K· 18.64 mi
2:01:38
Rank: #3186 (+326)
25K → 30K
20:22 | 6:33/mi
20M
2:10:28
Rank: #3010 (+176)
30K → 20M
8:50 | 6:30/mi
21M
2:17:06
Rank: #2833 (+177)
20M → 21M
6:38 | 6:38/mi
35K· 21.75 mi
2:22:10
Rank: #2846 (-13)
21M → 35K
5:04 | 6:46/mi
23M
2:30:19
Rank: #2718 (+128)
35K → 23M
8:09 | 6:31/mi
24M
2:37:02
Rank: #2696 (+22)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:42:57
Rank: #2684 (+12)
24M → 40K
5:55 | 6:55/mi
25.2M
2:45:37
Rank: #2697 (-13)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
2:52:28
Rank: #2714 (-17)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:35
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:26:53
Pace6:38 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5521:336:5621:33
6:56
-
10K
6.21 mi10:45:0641:446:4320:11
6:30
-0:26
15K
9.32 mi11:04:401:01:186:3519:34
6:18
-0:12
20K
12.43 mi11:24:371:21:156:3219:57
6:25
+0:07
Half
13.11 mi11:28:571:25:356:324:20
6:21
-0:04
25K
15.53 mi11:44:381:41:166:3115:41
6:28
+0:07
30K
18.64 mi12:05:002:01:386:3120:22
6:33
+0:05
20M
20.00 mi12:13:502:10:286:318:50
6:30
-0:03
21M
21.00 mi12:20:282:17:066:326:38
6:38
+0:08
35K
21.75 mi12:25:322:22:106:325:04
6:46
+0:08
23M
23.00 mi12:33:412:30:196:328:09
6:31
-0:15
24M
24.00 mi12:40:242:37:026:336:43
6:43
+0:12
40K
24.85 mi12:46:192:42:576:335:55
6:55
+0:12
25.2M
25.20 mi12:48:592:45:376:342:40
7:44
+0:49
Finish
26.22 mi12:55:502:52:286:356:51
6:43
-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

6:18 /mi

Average Pace

6:35 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:54

14% of race

Time at Steady Pace

1:53:22

66% of race

Time at Slower Pace

35:12

20% of race

Average Pace: 6:35 /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 mi10:24:5521:336:5621:33
6:56
#7344
10K
6.21 mi10:45:0641:446:4320:11
6:30
#5536
15K
9.32 mi11:04:401:01:186:3519:34
6:18
#4237
20K
12.43 mi11:24:371:21:156:3219:57
6:25
#3754
Half
13.11 mi11:28:571:25:356:324:20
6:21
#3707
25K
15.53 mi11:44:381:41:166:3115:41
6:28
#3512
30K
18.64 mi12:05:002:01:386:3120:22
6:33
#3186
20M
20.00 mi12:13:502:10:286:318:50
6:30
#3010
21M
21.00 mi12:20:282:17:066:326:38
6:38
#2833
35K
21.75 mi12:25:322:22:106:325:04
6:46
#2846
23M
23.00 mi12:33:412:30:196:328:09
6:31
#2718
24M
24.00 mi12:40:242:37:026:336:43
6:43
#2696
40K
24.85 mi12:46:192:42:576:335:55
6:55
#2684
25.2M
25.20 mi12:48:592:45:376:342:40
7:44
#2697
Finish
26.22 mi12:55:502:52:286:356:51
6:43
#2714
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi73447757752333(Top 8%)101(Top 0.8%)101(Top 2%)
10K6.21 mi3.10 mi5536+1808408+367408+3673708(Top 13%)201(Top 2%)201(Top 4%)
15K9.32 mi3.11 mi4237+1299243+165243+1652333(Top 8%)101(Top 0.8%)101(Top 2%)
20K12.43 mi3.11 mi3754+483203+40203+402649(Top 9%)121(Top 1.0%)121(Top 2%)
Half13.11 mi0.68 mi3707+47198+5198+52857(Top 10%)122(Top 1.0%)122(Top 2%)
25K15.53 mi2.42 mi3512+195180+18180+182737(Top 10%)126(Top 1%)126(Top 2%)
30K18.64 mi3.11 mi3186+326153+27153+272226(Top 8%)114(Top 0.9%)114(Top 2%)
20M20.00 mi1.36 mi3010+176143+10143+101648(Top 6%)85(Top 0.7%)85(Top 2%)
21M21.00 mi1.00 mi2833+177131+12131+121029(Top 4%)50(Top 0.4%)50(Top 0.9%)
35K21.75 mi0.75 mi2846-13136-5136-53996(Top 14%)390(Top 3%)390(Top 7%)
23M23.00 mi1.25 mi2718+128130+6130+61505(Top 5%)88(Top 0.7%)88(Top 2%)
24M24.00 mi1.00 mi2696+22134-4134-43086(Top 11%)277(Top 2%)277(Top 5%)
40K24.85 mi0.85 mi2684+12135-1135-13493(Top 12%)373(Top 3%)373(Top 7%)
25.2M25.20 mi0.35 mi2697-131351354565(Top 16%)712(Top 6%)712(Top 13%)
Finish26.22 mi1.02 mi2714-17139-4139-44038(Top 14%)556(Top 5%)556(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2333

Females

101

F18-39

101

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3708

Females

201

F18-39

201

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2333

Females

101

F18-39

101

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2649

Females

121

F18-39

121

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2857

Females

122

F18-39

122

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2737

Females

126

F18-39

126

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2226

Females

114

F18-39

114

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1648

Females

85

F18-39

85

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1029

Females

50

F18-39

50

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3996

Females

390

F18-39

390

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1505

Females

88

F18-39

88

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

3086

Females

277

F18-39

277

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3493

Females

373

F18-39

373

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4565

Females

712

F18-39

712

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

4038

Females

556

F18-39

556

Passing Analysis

Category:
Athletes Passed
4822
Passed By
192
Net Change
+4630
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7344
5K → 10K18091+1808#7344#5536
10K → 15K12990+1299#5536#4237
15K → 20K4863+483#4237#3754
20K → Half492+47#3754#3707
Half → 25K2005+195#3707#3512
25K → 30K3315+326#3512#3186
30K → 20M1782+176#3186#3010
20M → 21M1770+177#3010#2833
21M → 35K2740-13#2833#2846
35K → 23M1291+128#2846#2718
23M → 24M5634+22#2718#2696
24M → 40K4533+12#2696#2684
40K → 25.2M821-13#2684#2697
25.2M → Finish2845-17#2697#2714
TOTALS4822192+4630
📊

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