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BOSTON MARATHON 2025

Erin Coulter

Bib: 20766•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 47%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:52
Rank: #18884
Start → 5K
25:52 | 8:20/mi
10K· 6.21 mi
51:47
Rank: #18829 (+55)
5K → 10K
25:55 | 8:21/mi
15K· 9.32 mi
1:17:53
Rank: #18767 (+62)
10K → 15K
26:06 | 8:24/mi
20K· 12.43 mi
1:44:09
Rank: #18532 (+235)
15K → 20K
26:16 | 8:27/mi
Half· 13.11 mi
1:49:52
Rank: #18522 (+10)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:10:59
Rank: #18487 (+35)
Half → 25K
21:07 | 8:43/mi
30K· 18.64 mi
2:39:23
Rank: #18452 (+35)
25K → 30K
28:24 | 9:08/mi
20M
2:51:58
Rank: #18420 (+32)
30K → 20M
12:35 | 9:16/mi
21M
3:01:44
Rank: #18328 (+92)
20M → 21M
9:46 | 9:46/mi
35K· 21.75 mi
3:08:45
Rank: #18406 (-78)
21M → 35K
7:01 | 9:23/mi
23M
3:20:46
Rank: #18451 (-45)
35K → 23M
12:01 | 9:36/mi
24M
3:30:12
Rank: #18518 (-67)
23M → 24M
9:26 | 9:26/mi
40K· 24.85 mi
3:38:23
Rank: #18522 (-4)
24M → 40K
8:11 | 9:34/mi
25.2M
3:41:53
Rank: #18514 (+8)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:50:51
Rank: #18517 (-3)
25.2M → Finish
8:58 | 8:48/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:52
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:00:59
Pace9:14 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5925:528:2025:52
8:20
-
10K
6.21 mi11:44:5451:478:2025:55
8:21
+0:01
15K
9.32 mi12:11:001:17:538:2126:06
8:24
+0:03
20K
12.43 mi12:37:161:44:098:2326:16
8:27
+0:03
Half
13.11 mi12:42:591:49:528:235:43
8:23
-0:04
25K
15.53 mi13:04:062:10:598:2621:07
8:43
+0:20
30K
18.64 mi13:32:302:39:238:3328:24
9:08
+0:25
20M
20.00 mi13:45:052:51:588:3612:35
9:16
+0:08
21M
21.00 mi13:54:513:01:448:399:46
9:46
+0:30
35K
21.75 mi14:01:523:08:458:417:01
9:23
-0:23
23M
23.00 mi14:13:533:20:468:4412:01
9:36
+0:13
24M
24.00 mi14:23:193:30:128:469:26
9:26
-0:10
40K
24.85 mi14:31:303:38:238:478:11
9:34
+0:08
25.2M
25.20 mi14:35:003:41:538:483:30
10:09
+0:35
Finish
26.22 mi14:43:583:50:518:498:58
8:48
-1:21

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

8:20 /mi

Average Pace

8:49 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:57

61% of race

Time at Steady Pace

48:00

21% of race

Time at Slower Pace

42:54

19% of race

Average Pace: 8:48 /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 mi11:18:5925:528:2025:52
8:20
#18884
10K
6.21 mi11:44:5451:478:2025:55
8:21
#18829
15K
9.32 mi12:11:001:17:538:2126:06
8:24
#18767
20K
12.43 mi12:37:161:44:098:2326:16
8:27
#18532
Half
13.11 mi12:42:591:49:528:235:43
8:23
#18522
25K
15.53 mi13:04:062:10:598:2621:07
8:43
#18487
30K
18.64 mi13:32:302:39:238:3328:24
9:08
#18452
20M
20.00 mi13:45:052:51:588:3612:35
9:16
#18420
21M
21.00 mi13:54:513:01:448:399:46
9:46
#18328
35K
21.75 mi14:01:523:08:458:417:01
9:23
#18406
23M
23.00 mi14:13:533:20:468:4412:01
9:36
#18451
24M
24.00 mi14:23:193:30:128:469:26
9:26
#18518
40K
24.85 mi14:31:303:38:238:478:11
9:34
#18522
25.2M
25.20 mi14:35:003:41:538:483:30
10:09
#18514
Finish
26.22 mi14:43:583:50:518:498:58
8:48
#18517
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi188846845684518725(Top 66%)6738(Top 55%)6738(Top 392%)
10K6.21 mi3.10 mi18829+556810+356810+3518834(Top 66%)6784(Top 55%)6784(Top 395%)
15K9.32 mi3.11 mi18767+626771+396771+3918725(Top 66%)6738(Top 55%)6738(Top 392%)
20K12.43 mi3.11 mi18532+2356642+1296642+12917930(Top 63%)6304(Top 52%)6304(Top 367%)
Half13.11 mi0.68 mi18522+106630+126630+1218534(Top 65%)6648(Top 54%)6648(Top 387%)
25K15.53 mi2.42 mi18487+356633-36633-318465(Top 65%)6688(Top 55%)6688(Top 389%)
30K18.64 mi3.11 mi18452+356638-56638-518364(Top 65%)6767(Top 55%)6767(Top 394%)
20M20.00 mi1.36 mi18420+326652-146652-1418107(Top 64%)6776(Top 55%)6776(Top 394%)
21M21.00 mi1.00 mi18328+926623+296623+2917354(Top 61%)6456(Top 53%)6456(Top 376%)
35K21.75 mi0.75 mi18406-786683-606683-6019881(Top 70%)7912(Top 65%)7912(Top 461%)
23M23.00 mi1.25 mi18451-456735-526735-5219077(Top 67%)7549(Top 62%)7549(Top 439%)
24M24.00 mi1.00 mi18518-676804-696804-6919386(Top 68%)7760(Top 63%)7760(Top 452%)
40K24.85 mi0.85 mi18522-46834-306834-3019007(Top 67%)7632(Top 62%)7632(Top 444%)
25.2M25.20 mi0.35 mi18514+86842-86842-817733(Top 62%)6985(Top 57%)6985(Top 407%)
Finish26.22 mi1.02 mi18517-36858-166858-1618057(Top 64%)7114(Top 58%)7114(Top 414%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18725

Females

6738

F40-44

6738

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18834

Females

6784

F40-44

6784

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18725

Females

6738

F40-44

6738

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

17930

Females

6304

F40-44

6304

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18534

Females

6648

F40-44

6648

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18465

Females

6688

F40-44

6688

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18364

Females

6767

F40-44

6767

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

18107

Females

6776

F40-44

6776

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17354

Females

6456

F40-44

6456

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

19881

Females

7912

F40-44

7912

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

19077

Females

7549

F40-44

7549

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

19386

Females

7760

F40-44

7760

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19007

Females

7632

F40-44

7632

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17733

Females

6985

F40-44

6985

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

18057

Females

7114

F40-44

7114

Passing Analysis

Category:
Athletes Passed
1932
Passed By
1565
Net Change
+367
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18884
5K → 10K282227+55#18884#18829
10K → 15K224162+62#18829#18767
15K → 20K32085+235#18767#18532
20K → Half3929+10#18532#18522
Half → 25K184149+35#18522#18487
25K → 30K261226+35#18487#18452
30K → 20M11987+32#18452#18420
20M → 21M14351+92#18420#18328
21M → 35K36114-78#18328#18406
35K → 23M97142-45#18406#18451
23M → 24M52119-67#18451#18518
24M → 40K7377-4#18518#18522
40K → 25.2M3931+8#18522#18514
25.2M → Finish6366-3#18514#18517
TOTALS19321565+367
📊

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