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BOSTON MARATHON 2025

Anna Kemball-Cook

Bib: 20074•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 41%
Gender (Female)
#0 / 12228
Top 25%
Division (F18-39)
#0 / 5469
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #14264
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
47:48
Rank: #13868 (+396)
5K → 10K
23:46 | 7:39/mi
15K· 9.32 mi
1:11:26
Rank: #13442 (+426)
10K → 15K
23:38 | 7:36/mi
20K· 12.43 mi
1:35:05
Rank: #12936 (+506)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:40:11
Rank: #12850 (+86)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:58:41
Rank: #12523 (+327)
Half → 25K
18:30 | 7:38/mi
30K· 18.64 mi
2:23:52
Rank: #12415 (+108)
25K → 30K
25:11 | 8:06/mi
20M
2:34:47
Rank: #12234 (+181)
30K → 20M
10:55 | 8:02/mi
21M
2:43:32
Rank: #12199 (+35)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
2:49:18
Rank: #12107 (+92)
21M → 35K
5:46 | 7:42/mi
23M
2:59:23
Rank: #11958 (+149)
35K → 23M
10:05 | 8:03/mi
24M
3:07:26
Rank: #11922 (+36)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:14:26
Rank: #11883 (+39)
24M → 40K
7:00 | 8:11/mi
25.2M
3:17:29
Rank: #11863 (+20)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:24:53
Rank: #11647 (+216)
25.2M → Finish
7:24 | 7:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:11
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:44:42
Pace7:59 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2024:027:4424:02
7:44
-
10K
6.21 mi11:40:0647:487:4223:46
7:39
-0:05
15K
9.32 mi12:03:441:11:267:4023:38
7:36
-0:03
20K
12.43 mi12:27:231:35:057:3923:39
7:37
+0:01
Half
13.11 mi12:32:291:40:117:395:06
7:29
-0:08
25K
15.53 mi12:50:591:58:417:3818:30
7:38
+0:09
30K
18.64 mi13:16:102:23:527:4325:11
8:06
+0:28
20M
20.00 mi13:27:052:34:477:4410:55
8:02
-0:04
21M
21.00 mi13:35:502:43:327:478:45
8:45
+0:43
35K
21.75 mi13:41:362:49:187:475:46
7:42
-1:03
23M
23.00 mi13:51:412:59:237:4810:05
8:03
+0:21
24M
24.00 mi13:59:443:07:267:498:03
8:03
0:00
40K
24.85 mi14:06:443:14:267:497:00
8:11
+0:08
25.2M
25.20 mi14:09:473:17:297:503:03
8:51
+0:40
Finish
26.22 mi14:17:113:24:537:497:24
7:16
-1:35

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

7:16 /mi

Average Pace

7:49 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:30

6% of race

Time at Steady Pace

1:59:21

58% of race

Time at Slower Pace

1:13:02

36% of race

Average Pace: 7:49 /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 mi11:16:2024:027:4424:02
7:44
#14264
10K
6.21 mi11:40:0647:487:4223:46
7:39
#13868
15K
9.32 mi12:03:441:11:267:4023:38
7:36
#13442
20K
12.43 mi12:27:231:35:057:3923:39
7:37
#12936
Half
13.11 mi12:32:291:40:117:395:06
7:29
#12850
25K
15.53 mi12:50:591:58:417:3818:30
7:38
#12523
30K
18.64 mi13:16:102:23:527:4325:11
8:06
#12415
20M
20.00 mi13:27:052:34:477:4410:55
8:02
#12234
21M
21.00 mi13:35:502:43:327:478:45
8:45
#12199
35K
21.75 mi13:41:362:49:187:475:46
7:42
#12107
23M
23.00 mi13:51:412:59:237:4810:05
8:03
#11958
24M
24.00 mi13:59:443:07:267:498:03
8:03
#11922
40K
24.85 mi14:06:443:14:267:497:00
8:11
#11883
25.2M
25.20 mi14:09:473:17:297:503:03
8:51
#11863
Finish
26.22 mi14:17:113:24:537:497:24
7:16
#11647
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi142644074407412669(Top 45%)3258(Top 27%)3258(Top 60%)
10K6.21 mi3.10 mi13868+3963861+2133861+21313463(Top 47%)3640(Top 30%)3640(Top 67%)
15K9.32 mi3.11 mi13442+4263650+2113650+21112669(Top 45%)3258(Top 27%)3258(Top 60%)
20K12.43 mi3.11 mi12936+5063408+2423408+24211702(Top 41%)2840(Top 23%)2840(Top 52%)
Half13.11 mi0.68 mi12850+863365+433365+4311568(Top 41%)2727(Top 22%)2727(Top 50%)
25K15.53 mi2.42 mi12523+3273203+1623203+16211005(Top 39%)2594(Top 21%)2594(Top 47%)
30K18.64 mi3.11 mi12415+1083222-193222-1912145(Top 43%)3359(Top 27%)3359(Top 61%)
20M20.00 mi1.36 mi12234+1813159+633159+6310692(Top 38%)2785(Top 23%)2785(Top 51%)
21M21.00 mi1.00 mi12199+353181-223181-2212000(Top 42%)3593(Top 29%)3593(Top 66%)
35K21.75 mi0.75 mi12107+923159+223159+2210187(Top 36%)2705(Top 22%)2705(Top 49%)
23M23.00 mi1.25 mi11958+1493117+423117+4210444(Top 37%)2967(Top 24%)2967(Top 54%)
24M24.00 mi1.00 mi11922+363131-143131-1411604(Top 41%)3619(Top 30%)3619(Top 66%)
40K24.85 mi0.85 mi11883+393150-193150-1911499(Top 40%)3651(Top 30%)3651(Top 67%)
25.2M25.20 mi0.35 mi11863+203154-43154-410973(Top 39%)3467(Top 28%)3467(Top 63%)
Finish26.22 mi1.02 mi11647+2163081+733081+737549(Top 27%)1885(Top 15%)1885(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12669

Females

3258

F18-39

3258

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

13463

Females

3640

F18-39

3640

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12669

Females

3258

F18-39

3258

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11702

Females

2840

F18-39

2840

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11568

Females

2727

F18-39

2727

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

11005

Females

2594

F18-39

2594

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12145

Females

3359

F18-39

3359

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10692

Females

2785

F18-39

2785

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

12000

Females

3593

F18-39

3593

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

10187

Females

2705

F18-39

2705

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

10444

Females

2967

F18-39

2967

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11604

Females

3619

F18-39

3619

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11499

Females

3651

F18-39

3651

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10973

Females

3467

F18-39

3467

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7549

Females

1885

F18-39

1885

Passing Analysis

Category:
Athletes Passed
3305
Passed By
688
Net Change
+2617
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14264
5K → 10K516120+396#14264#13868
10K → 15K46539+426#13868#13442
15K → 20K53024+506#13442#12936
20K → Half882+86#12936#12850
Half → 25K34518+327#12850#12523
25K → 30K282174+108#12523#12415
30K → 20M21332+181#12415#12234
20M → 21M11883+35#12234#12199
21M → 35K10816+92#12199#12107
35K → 23M17728+149#12107#11958
23M → 24M9357+36#11958#11922
24M → 40K10263+39#11922#11883
40K → 25.2M4626+20#11883#11863
25.2M → Finish2226+216#11863#11647
TOTALS3305688+2617
📊

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