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BOSTON MARATHON 2025

Anna Kim

Bib: 27124•F

MA

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
31:47
Rank: #26143
Start → 5K
31:47 | 10:14/mi
10K· 6.21 mi
1:03:05
Rank: #25787 (+356)
5K → 10K
31:18 | 10:04/mi
15K· 9.32 mi
1:34:15
Rank: #25561 (+226)
10K → 15K
31:10 | 10:02/mi
20K· 12.43 mi
2:05:11
Rank: #25184 (+377)
15K → 20K
30:56 | 9:57/mi
Half· 13.11 mi
2:11:50
Rank: #25131 (+53)
20K → Half
6:39 | 9:45/mi
25K· 15.53 mi
2:36:19
Rank: #24851 (+280)
Half → 25K
24:29 | 10:06/mi
30K· 18.64 mi
3:08:43
Rank: #24504 (+347)
25K → 30K
32:24 | 10:26/mi
20M
3:22:09
Rank: #24276 (+228)
30K → 20M
13:26 | 9:53/mi
21M
3:32:19
Rank: #24025 (+251)
20M → 21M
10:10 | 10:10/mi
35K· 21.75 mi
3:39:23
Rank: #23886 (+139)
21M → 35K
7:04 | 9:27/mi
23M
3:51:50
Rank: #23694 (+192)
35K → 23M
12:27 | 9:57/mi
24M
4:01:38
Rank: #23577 (+117)
23M → 24M
9:48 | 9:48/mi
40K· 24.85 mi
4:10:12
Rank: #23464 (+113)
24M → 40K
8:34 | 10:01/mi
25.2M
4:13:50
Rank: #23387 (+77)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
4:22:38
Rank: #23226 (+161)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:11:50
Pace10:03 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:10:48
Pace9:59 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2431:4710:1431:47
10:14
-
10K
6.21 mi12:22:421:03:0510:0931:18
10:04
-0:10
15K
9.32 mi12:53:521:34:1510:0731:10
10:02
-0:02
20K
12.43 mi13:24:482:05:1110:0430:56
9:57
-0:05
Half
13.11 mi13:31:272:11:5010:036:39
9:45
-0:12
25K
15.53 mi13:55:562:36:1910:0424:29
10:06
+0:21
30K
18.64 mi14:28:203:08:4310:0732:24
10:26
+0:20
20M
20.00 mi14:41:463:22:0910:0613:26
9:53
-0:33
21M
21.00 mi14:51:563:32:1910:0710:10
10:10
+0:17
35K
21.75 mi14:59:003:39:2310:057:04
9:27
-0:43
23M
23.00 mi15:11:273:51:5010:0512:27
9:57
+0:30
24M
24.00 mi15:21:154:01:3810:049:48
9:48
-0:09
40K
24.85 mi15:29:494:10:1210:048:34
10:01
+0:13
25.2M
25.20 mi15:33:274:13:5010:043:38
10:32
+0:31
Finish
26.22 mi15:42:154:22:3810:018:48
8:38
-1:54

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

8:38 /mi

Average Pace

10:01 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

32:19

12% of race

Time at Steady Pace

2:42:30

62% of race

Time at Slower Pace

1:07:49

26% of race

Average Pace: 10:01 /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 mi11:51:2431:4710:1431:47
10:14
#26143
10K
6.21 mi12:22:421:03:0510:0931:18
10:04
#25787
15K
9.32 mi12:53:521:34:1510:0731:10
10:02
#25561
20K
12.43 mi13:24:482:05:1110:0430:56
9:57
#25184
Half
13.11 mi13:31:272:11:5010:036:39
9:45
#25131
25K
15.53 mi13:55:562:36:1910:0424:29
10:06
#24851
30K
18.64 mi14:28:203:08:4310:0732:24
10:26
#24504
20M
20.00 mi14:41:463:22:0910:0613:26
9:53
#24276
21M
21.00 mi14:51:563:32:1910:0710:10
10:10
#24025
35K
21.75 mi14:59:003:39:2310:057:04
9:27
#23886
23M
23.00 mi15:11:273:51:5010:0512:27
9:57
#23694
24M
24.00 mi15:21:154:01:3810:049:48
9:48
#23577
40K
24.85 mi15:29:494:10:1210:048:34
10:01
#23464
25.2M
25.20 mi15:33:274:13:5010:043:38
10:32
#23387
Finish
26.22 mi15:42:154:22:3810:018:48
8:38
#23226
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26143108341083425056(Top 88%)10245(Top 84%)10245(Top 187%)
10K6.21 mi3.10 mi25787+35610652+18210652+18225470(Top 90%)10503(Top 86%)10503(Top 192%)
15K9.32 mi3.11 mi25561+22610535+11710535+11725056(Top 88%)10245(Top 84%)10245(Top 187%)
20K12.43 mi3.11 mi25184+37710334+20110334+20124140(Top 85%)9789(Top 80%)9789(Top 179%)
Half13.11 mi0.68 mi25131+5310307+2710307+2724252(Top 85%)9841(Top 80%)9841(Top 180%)
25K15.53 mi2.42 mi24851+28010176+13110176+13123506(Top 83%)9483(Top 78%)9483(Top 173%)
30K18.64 mi3.11 mi24504+34710008+16810008+16822777(Top 80%)9199(Top 75%)9199(Top 168%)
20M20.00 mi1.36 mi24276+2289896+1129896+11220596(Top 73%)8140(Top 67%)8140(Top 149%)
21M21.00 mi1.00 mi24025+2519781+1159781+11518943(Top 67%)7314(Top 60%)7314(Top 134%)
35K21.75 mi0.75 mi23886+1399717+649717+6420182(Top 71%)8085(Top 66%)8085(Top 148%)
23M23.00 mi1.25 mi23694+1929633+849633+8420315(Top 72%)8212(Top 67%)8212(Top 150%)
24M24.00 mi1.00 mi23577+1179590+439590+4320748(Top 73%)8479(Top 69%)8479(Top 155%)
40K24.85 mi0.85 mi23464+1139534+569534+5620536(Top 72%)8432(Top 69%)8432(Top 154%)
25.2M25.20 mi0.35 mi23387+779507+279507+2719221(Top 68%)7776(Top 64%)7776(Top 142%)
Finish26.22 mi1.02 mi23226+1619437+709437+7017139(Top 60%)6644(Top 54%)6644(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

25056

Females

10245

F18-39

10245

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25470

Females

10503

F18-39

10503

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

25056

Females

10245

F18-39

10245

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24140

Females

9789

F18-39

9789

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24252

Females

9841

F18-39

9841

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23506

Females

9483

F18-39

9483

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22777

Females

9199

F18-39

9199

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20596

Females

8140

F18-39

8140

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

18943

Females

7314

F18-39

7314

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20182

Females

8085

F18-39

8085

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20315

Females

8212

F18-39

8212

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

20748

Females

8479

F18-39

8479

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20536

Females

8432

F18-39

8432

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19221

Females

7776

F18-39

7776

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

17139

Females

6644

F18-39

6644

Passing Analysis

Category:
Athletes Passed
3053
Passed By
136
Net Change
+2917
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26143
5K → 10K40650+356#26143#25787
10K → 15K26438+226#25787#25561
15K → 20K38912+377#25561#25184
20K → Half574+53#25184#25131
Half → 25K2877+280#25131#24851
25K → 30K3514+347#24851#24504
30K → 20M2291+228#24504#24276
20M → 21M2532+251#24276#24025
21M → 35K1401+139#24025#23886
35K → 23M1997+192#23886#23694
23M → 24M1170+117#23694#23577
24M → 40K1196+113#23577#23464
40K → 25.2M792+77#23464#23387
25.2M → Finish1632+161#23387#23226
TOTALS3053136+2917
📊

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