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BOSTON MARATHON 2025

Erin Muir

Bib: 9685•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 19%
Gender (Female)
#0 / 12228
Top 4%
Division (F18-39)
#0 / 5469
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:20
Rank: #6827
Start → 5K
21:20 | 6:52/mi
10K· 6.21 mi
42:27
Rank: #6601 (+226)
5K → 10K
21:07 | 6:48/mi
15K· 9.32 mi
1:03:39
Rank: #6483 (+118)
10K → 15K
21:12 | 6:49/mi
20K· 12.43 mi
1:25:02
Rank: #6341 (+142)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:29:42
Rank: #6339 (+2)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:38
Rank: #6298 (+41)
Half → 25K
16:56 | 6:59/mi
30K· 18.64 mi
2:08:54
Rank: #6072 (+226)
25K → 30K
22:16 | 7:10/mi
20M
2:18:45
Rank: #5994 (+78)
30K → 20M
9:51 | 7:15/mi
21M
2:26:28
Rank: #5915 (+79)
20M → 21M
7:43 | 7:43/mi
35K· 21.75 mi
2:31:41
Rank: #5857 (+58)
21M → 35K
5:13 | 6:58/mi
23M
2:40:48
Rank: #5752 (+105)
35K → 23M
9:07 | 7:17/mi
24M
2:47:42
Rank: #5617 (+135)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:53:39
Rank: #5488 (+129)
24M → 40K
5:57 | 6:58/mi
25.2M
2:56:20
Rank: #5448 (+40)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
3:03:09
Rank: #5348 (+100)
25.2M → Finish
6:49 | 6:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:42
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:33:27
Pace7:08 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2821:206:5221:20
6:52
-
10K
6.21 mi11:08:3542:276:5021:07
6:48
-0:04
15K
9.32 mi11:29:471:03:396:5021:12
6:49
+0:01
20K
12.43 mi11:51:101:25:026:5121:23
6:53
+0:04
Half
13.11 mi11:55:501:29:426:514:40
6:50
-0:03
25K
15.53 mi12:12:461:46:386:5216:56
6:59
+0:09
30K
18.64 mi12:35:022:08:546:5522:16
7:10
+0:11
20M
20.00 mi12:44:532:18:456:569:51
7:15
+0:05
21M
21.00 mi12:52:362:26:286:587:43
7:43
+0:28
35K
21.75 mi12:57:492:31:416:585:13
6:58
-0:45
23M
23.00 mi13:06:562:40:486:599:07
7:17
+0:19
24M
24.00 mi13:13:502:47:426:596:54
6:54
-0:23
40K
24.85 mi13:19:472:53:396:595:57
6:58
+0:04
25.2M
25.20 mi13:22:282:56:207:002:41
7:47
+0:49
Finish
26.22 mi13:29:173:03:096:596:49
6:41
-1:06

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

6:41 /mi

Average Pace

6:59 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:45

94% of race

Time at Steady Pace

10:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:59 /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 mi10:47:2821:206:5221:20
6:52
#6827
10K
6.21 mi11:08:3542:276:5021:07
6:48
#6601
15K
9.32 mi11:29:471:03:396:5021:12
6:49
#6483
20K
12.43 mi11:51:101:25:026:5121:23
6:53
#6341
Half
13.11 mi11:55:501:29:426:514:40
6:50
#6339
25K
15.53 mi12:12:461:46:386:5216:56
6:59
#6298
30K
18.64 mi12:35:022:08:546:5522:16
7:10
#6072
20M
20.00 mi12:44:532:18:456:569:51
7:15
#5994
21M
21.00 mi12:52:362:26:286:587:43
7:43
#5915
35K
21.75 mi12:57:492:31:416:585:13
6:58
#5857
23M
23.00 mi13:06:562:40:486:599:07
7:17
#5752
24M
24.00 mi13:13:502:47:426:596:54
6:54
#5617
40K
24.85 mi13:19:472:53:396:595:57
6:58
#5488
25.2M
25.20 mi13:22:282:56:207:002:41
7:47
#5448
Finish
26.22 mi13:29:173:03:096:596:49
6:41
#5348
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi68276396396345(Top 22%)586(Top 5%)586(Top 11%)
10K6.21 mi3.10 mi6601+226597+42597+426374(Top 22%)579(Top 5%)579(Top 11%)
15K9.32 mi3.11 mi6483+118591+6591+66345(Top 22%)586(Top 5%)586(Top 11%)
20K12.43 mi3.11 mi6341+142574+17574+176071(Top 21%)563(Top 5%)563(Top 10%)
Half13.11 mi0.68 mi6339+2578-4578-46535(Top 23%)656(Top 5%)656(Top 12%)
25K15.53 mi2.42 mi6298+41585-7585-76243(Top 22%)650(Top 5%)650(Top 12%)
30K18.64 mi3.11 mi6072+226572+13572+135724(Top 20%)598(Top 5%)598(Top 11%)
20M20.00 mi1.36 mi5994+78568+4568+45502(Top 19%)638(Top 5%)638(Top 12%)
21M21.00 mi1.00 mi5915+79559+9559+95754(Top 20%)829(Top 7%)829(Top 15%)
35K21.75 mi0.75 mi5857+58553+6553+65205(Top 18%)662(Top 5%)662(Top 12%)
23M23.00 mi1.25 mi5752+105552+1552+15376(Top 19%)779(Top 6%)779(Top 14%)
24M24.00 mi1.00 mi5617+135537+15537+154124(Top 15%)481(Top 4%)481(Top 9%)
40K24.85 mi0.85 mi5488+129517+20517+203701(Top 13%)431(Top 4%)431(Top 8%)
25.2M25.20 mi0.35 mi5448+405175174837(Top 17%)804(Top 7%)804(Top 15%)
Finish26.22 mi1.02 mi5348+100508+9508+93836(Top 14%)507(Top 4%)507(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6345

Females

586

F18-39

586

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6374

Females

579

F18-39

579

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6345

Females

586

F18-39

586

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

6071

Females

563

F18-39

563

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6535

Females

656

F18-39

656

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6243

Females

650

F18-39

650

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5724

Females

598

F18-39

598

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5502

Females

638

F18-39

638

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5754

Females

829

F18-39

829

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5205

Females

662

F18-39

662

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5376

Females

779

F18-39

779

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4124

Females

481

F18-39

481

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3701

Females

431

F18-39

431

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4837

Females

804

F18-39

804

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3836

Females

507

F18-39

507

Passing Analysis

Category:
Athletes Passed
2043
Passed By
564
Net Change
+1479
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6827
5K → 10K32296+226#6827#6601
10K → 15K220102+118#6601#6483
15K → 20K19755+142#6483#6341
20K → Half3129+2#6341#6339
Half → 25K13998+41#6339#6298
25K → 30K28660+226#6298#6072
30K → 20M11032+78#6072#5994
20M → 21M10728+79#5994#5915
21M → 35K7719+58#5915#5857
35K → 23M13429+105#5857#5752
23M → 24M1383+135#5752#5617
24M → 40K1290+129#5617#5488
40K → 25.2M5010+40#5488#5448
25.2M → Finish1033+100#5448#5348
TOTALS2043564+1479
📊

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