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BOSTON MARATHON 2025

Brooke Williamson

Bib: 8475•F

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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
23:55
Rank: #13982
Start → 5K
23:55 | 7:42/mi
10K· 6.21 mi
48:49
Rank: #15311 (-1329)
5K → 10K
24:54 | 8:01/mi
15K· 9.32 mi
1:14:27
Rank: #16236 (-925)
10K → 15K
25:38 | 8:15/mi
20K· 12.43 mi
1:40:36
Rank: #16647 (-411)
15K → 20K
26:09 | 8:25/mi
Half· 13.11 mi
1:46:07
Rank: #16635 (+12)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:08:01
Rank: #17217 (-582)
Half → 25K
21:54 | 9:02/mi
30K· 18.64 mi
2:38:35
Rank: #18180 (-963)
25K → 30K
30:34 | 9:50/mi
20M
2:52:42
Rank: #18634 (-454)
30K → 20M
14:07 | 10:23/mi
21M
3:03:54
Rank: #18949 (-315)
20M → 21M
11:12 | 11:12/mi
35K· 21.75 mi
3:10:29
Rank: #18873 (+76)
21M → 35K
6:35 | 8:48/mi
23M
3:22:32
Rank: #18905 (-32)
35K → 23M
12:03 | 9:37/mi
24M
3:31:43
Rank: #18886 (+19)
23M → 24M
9:11 | 9:11/mi
40K· 24.85 mi
3:40:04
Rank: #18912 (-26)
24M → 40K
8:21 | 9:46/mi
25.2M
3:43:37
Rank: #18913 (-1)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:53:14
Rank: #18981 (-68)
25.2M → Finish
9:37 | 9:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:07
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time2:07:07
Pace9:42 /mi
📊Positive Split: 19.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:32:4723:557:4223:55
7:42
-
10K
6.21 mi10:57:4148:497:5124:54
8:01
+0:19
15K
9.32 mi11:23:191:14:277:5925:38
8:15
+0:14
20K
12.43 mi11:49:281:40:368:0626:09
8:25
+0:10
Half
13.11 mi11:54:591:46:078:065:31
8:05
-0:20
25K
15.53 mi12:16:532:08:018:1421:54
9:02
+0:57
30K
18.64 mi12:47:272:38:358:3030:34
9:50
+0:48
20M
20.00 mi13:01:342:52:428:3814:07
10:23
+0:33
21M
21.00 mi13:12:463:03:548:4511:12
11:12
+0:49
35K
21.75 mi13:19:213:10:298:466:35
8:48
-2:24
23M
23.00 mi13:31:243:22:328:4812:03
9:37
+0:49
24M
24.00 mi13:40:353:31:438:499:11
9:11
-0:26
40K
24.85 mi13:48:563:40:048:518:21
9:46
+0:35
25.2M
25.20 mi13:52:293:43:378:523:33
10:18
+0:32
Finish
26.22 mi14:02:063:53:148:549:37
9:26
-0:52

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

8:54 /mi

Slowest Pace

11:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:07

45% of race

Time at Steady Pace

59:20

25% of race

Time at Slower Pace

1:07:47

29% of race

Average Pace: 8:54 /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 mi10:32:4723:557:4223:55
7:42
#13982
10K
6.21 mi10:57:4148:497:5124:54
8:01
#15311
15K
9.32 mi11:23:191:14:277:5925:38
8:15
#16236
20K
12.43 mi11:49:281:40:368:0626:09
8:25
#16647
Half
13.11 mi11:54:591:46:078:065:31
8:05
#16635
25K
15.53 mi12:16:532:08:018:1421:54
9:02
#17217
30K
18.64 mi12:47:272:38:358:3030:34
9:50
#18180
20M
20.00 mi13:01:342:52:428:3814:07
10:23
#18634
21M
21.00 mi13:12:463:03:548:4511:12
11:12
#18949
35K
21.75 mi13:19:213:10:298:466:35
8:48
#18873
23M
23.00 mi13:31:243:22:328:4812:03
9:37
#18905
24M
24.00 mi13:40:353:31:438:499:11
9:11
#18886
40K
24.85 mi13:48:563:40:048:518:21
9:46
#18912
25.2M
25.20 mi13:52:293:43:378:523:33
10:18
#18913
Finish
26.22 mi14:02:063:53:148:549:37
9:26
#18981
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi139823903390317757(Top 63%)6175(Top 50%)6175(Top 113%)
10K6.21 mi3.10 mi15311-13294731-8284731-82816617(Top 59%)5497(Top 45%)5497(Top 101%)
15K9.32 mi3.11 mi16236-9255273-5425273-54217757(Top 63%)6175(Top 50%)6175(Top 113%)
20K12.43 mi3.11 mi16647-4115530-2575530-25717668(Top 62%)6152(Top 50%)6152(Top 112%)
Half13.11 mi0.68 mi16635+125528+25528+216602(Top 58%)5548(Top 45%)5548(Top 101%)
25K15.53 mi2.42 mi17217-5825891-3635891-36320053(Top 71%)7558(Top 62%)7558(Top 138%)
30K18.64 mi3.11 mi18180-9636495-6046495-60421120(Top 74%)8291(Top 68%)8291(Top 152%)
20M20.00 mi1.36 mi18634-4546765-2706765-27022115(Top 78%)8959(Top 73%)8959(Top 164%)
21M21.00 mi1.00 mi18949-3156979-2146979-21421909(Top 77%)8918(Top 73%)8918(Top 163%)
35K21.75 mi0.75 mi18873+766953+266953+2617291(Top 61%)6526(Top 53%)6526(Top 119%)
23M23.00 mi1.25 mi18905-326996-436996-4319187(Top 68%)7607(Top 62%)7607(Top 139%)
24M24.00 mi1.00 mi18886+197011-157011-1518293(Top 64%)7195(Top 59%)7195(Top 132%)
40K24.85 mi0.85 mi18912-267052-417052-4119708(Top 69%)7994(Top 65%)7994(Top 146%)
25.2M25.20 mi0.35 mi18913-17057-57057-518309(Top 64%)7297(Top 60%)7297(Top 133%)
Finish26.22 mi1.02 mi18981-687118-617118-6120968(Top 74%)8639(Top 71%)8639(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

17757

Females

6175

F18-39

6175

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

16617

Females

5497

F18-39

5497

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

17757

Females

6175

F18-39

6175

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17668

Females

6152

F18-39

6152

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

16602

Females

5548

F18-39

5548

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20053

Females

7558

F18-39

7558

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

21120

Females

8291

F18-39

8291

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22115

Females

8959

F18-39

8959

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21909

Females

8918

F18-39

8918

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17291

Females

6526

F18-39

6526

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19187

Females

7607

F18-39

7607

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18293

Females

7195

F18-39

7195

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19708

Females

7994

F18-39

7994

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18309

Females

7297

F18-39

7297

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

20968

Females

8639

F18-39

8639

Passing Analysis

Category:
Athletes Passed
773
Passed By
5772
Net Change
-4999
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13982
5K → 10K421371-1329#13982#15311
10K → 15K41966-925#15311#16236
15K → 20K98509-411#16236#16647
20K → Half4028+12#16647#16635
Half → 25K47629-582#16635#17217
25K → 30K551018-963#17217#18180
30K → 20M31485-454#18180#18634
20M → 21M35350-315#18634#18949
21M → 35K9115+76#18949#18873
35K → 23M90122-32#18873#18905
23M → 24M7556+19#18905#18886
24M → 40K6793-26#18886#18912
40K → 25.2M2627-1#18912#18913
25.2M → Finish35103-68#18913#18981
TOTALS7735772-4999
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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