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BOSTON MARATHON 2025

Kimberly Emerson

Bib: 18154•F

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Masters (Masters Women)
#0 / 6759
Top 20%
Division (F40-44)
#0 / 1718
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:01
Rank: #14230
Start → 5K
24:01 | 7:44/mi
10K· 6.21 mi
47:45
Rank: #13798 (+432)
5K → 10K
23:44 | 7:38/mi
15K· 9.32 mi
1:11:38
Rank: #13625 (+173)
10K → 15K
23:53 | 7:41/mi
20K· 12.43 mi
1:35:44
Rank: #13405 (+220)
15K → 20K
24:06 | 7:45/mi
Half· 13.11 mi
1:40:58
Rank: #13380 (+25)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:59:54
Rank: #13179 (+201)
Half → 25K
18:56 | 7:49/mi
30K· 18.64 mi
2:25:54
Rank: #13317 (-138)
25K → 30K
26:00 | 8:22/mi
20M
2:37:22
Rank: #13275 (+42)
30K → 20M
11:28 | 8:26/mi
21M
2:46:40
Rank: #13370 (-95)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
2:53:03
Rank: #13452 (-82)
21M → 35K
6:23 | 8:32/mi
23M
3:04:06
Rank: #13558 (-106)
35K → 23M
11:03 | 8:50/mi
24M
3:12:42
Rank: #13629 (-71)
23M → 24M
8:36 | 8:36/mi
40K· 24.85 mi
3:20:16
Rank: #13696 (-67)
24M → 40K
7:34 | 8:51/mi
25.2M
3:23:43
Rank: #13764 (-68)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:32:22
Rank: #13853 (-89)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:58
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:51:24
Pace8:30 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5124:017:4424:01
7:44
-
10K
6.21 mi11:38:3547:457:4123:44
7:38
-0:06
15K
9.32 mi12:02:281:11:387:4123:53
7:41
+0:03
20K
12.43 mi12:26:341:35:447:4224:06
7:45
+0:04
Half
13.11 mi12:31:481:40:587:425:14
7:40
-0:05
25K
15.53 mi12:50:441:59:547:4318:56
7:49
+0:09
30K
18.64 mi13:16:442:25:547:5026:00
8:22
+0:33
20M
20.00 mi13:28:122:37:227:5211:28
8:26
+0:04
21M
21.00 mi13:37:302:46:407:569:18
9:18
+0:52
35K
21.75 mi13:43:532:53:037:576:23
8:32
-0:46
23M
23.00 mi13:54:563:04:068:0011:03
8:50
+0:18
24M
24.00 mi14:03:323:12:428:028:36
8:36
-0:14
40K
24.85 mi14:11:063:20:168:037:34
8:51
+0:15
25.2M
25.20 mi14:14:333:23:438:053:27
10:00
+1:09
Finish
26.22 mi14:23:123:32:228:068:39
8:29
-1:31

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

7:38 /mi

Average Pace

8:06 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:54

56% of race

Time at Steady Pace

1:01:06

29% of race

Time at Slower Pace

31:22

15% of race

Average Pace: 8:06 /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 mi11:14:5124:017:4424:01
7:44
#14230
10K
6.21 mi11:38:3547:457:4123:44
7:38
#13798
15K
9.32 mi12:02:281:11:387:4123:53
7:41
#13625
20K
12.43 mi12:26:341:35:447:4224:06
7:45
#13405
Half
13.11 mi12:31:481:40:587:425:14
7:40
#13380
25K
15.53 mi12:50:441:59:547:4318:56
7:49
#13179
30K
18.64 mi13:16:442:25:547:5026:00
8:22
#13317
20M
20.00 mi13:28:122:37:227:5211:28
8:26
#13275
21M
21.00 mi13:37:302:46:407:569:18
9:18
#13370
35K
21.75 mi13:43:532:53:037:576:23
8:32
#13452
23M
23.00 mi13:54:563:04:068:0011:03
8:50
#13558
24M
24.00 mi14:03:323:12:428:028:36
8:36
#13629
40K
24.85 mi14:11:063:20:168:037:34
8:51
#13696
25.2M
25.20 mi14:14:333:23:438:053:27
10:00
#13764
Finish
26.22 mi14:23:123:32:228:068:39
8:29
#13853
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi142304054405413397(Top 47%)3683(Top 30%)3683(Top 214%)
10K6.21 mi3.10 mi13798+4323824+2303824+23013385(Top 47%)3602(Top 29%)3602(Top 210%)
15K9.32 mi3.11 mi13625+1733756+683756+6813397(Top 47%)3683(Top 30%)3683(Top 214%)
20K12.43 mi3.11 mi13405+2203661+953661+9512936(Top 46%)3515(Top 29%)3515(Top 205%)
Half13.11 mi0.68 mi13380+253658+33658+313239(Top 47%)3639(Top 30%)3639(Top 212%)
25K15.53 mi2.42 mi13179+2013580+783580+7812459(Top 44%)3375(Top 28%)3375(Top 196%)
30K18.64 mi3.11 mi13317-1383727-1473727-14713954(Top 49%)4340(Top 35%)4340(Top 253%)
20M20.00 mi1.36 mi13275+423736-93736-913413(Top 47%)4199(Top 34%)4199(Top 244%)
21M21.00 mi1.00 mi13370-953818-823818-8215148(Top 53%)5252(Top 43%)5252(Top 306%)
35K21.75 mi0.75 mi13452-823892-743892-7415676(Top 55%)5594(Top 46%)5594(Top 326%)
23M23.00 mi1.25 mi13558-1063991-993991-9915252(Top 54%)5462(Top 45%)5462(Top 318%)
24M24.00 mi1.00 mi13629-714049-584049-5815172(Top 53%)5470(Top 45%)5470(Top 318%)
40K24.85 mi0.85 mi13696-674115-664115-6615480(Top 54%)5785(Top 47%)5785(Top 337%)
25.2M25.20 mi0.35 mi13764-684175-604175-6017067(Top 60%)6605(Top 54%)6605(Top 384%)
Finish26.22 mi1.02 mi13853-894242-674242-6716154(Top 57%)6098(Top 50%)6098(Top 355%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

13397

Females

3683

F40-44

3683

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

13385

Females

3602

F40-44

3602

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

13397

Females

3683

F40-44

3683

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12936

Females

3515

F40-44

3515

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

13239

Females

3639

F40-44

3639

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

12459

Females

3375

F40-44

3375

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13954

Females

4340

F40-44

4340

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

13413

Females

4199

F40-44

4199

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

15148

Females

5252

F40-44

5252

21M→35K

21.0 - 21.8 mi

Top 55%
×7stories
+17ft-86ft

Overall

15676

Females

5594

F40-44

5594

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15252

Females

5462

F40-44

5462

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

15172

Females

5470

F40-44

5470

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15480

Females

5785

F40-44

5785

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17067

Females

6605

F40-44

6605

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16154

Females

6098

F40-44

6098

Passing Analysis

Category:
Athletes Passed
2155
Passed By
1778
Net Change
+377
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14230
5K → 10K541109+432#14230#13798
10K → 15K300127+173#13798#13625
15K → 20K29373+220#13625#13405
20K → Half5227+25#13405#13380
Half → 25K25958+201#13380#13179
25K → 30K196334-138#13179#13317
30K → 20M13290+42#13317#13275
20M → 21M74169-95#13275#13370
21M → 35K39121-82#13370#13452
35K → 23M77183-106#13452#13558
23M → 24M65136-71#13558#13629
24M → 40K64131-67#13629#13696
40K → 25.2M2189-68#13696#13764
25.2M → Finish42131-89#13764#13853
TOTALS21551778+377
📊

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