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BOSTON MARATHON 2025

Kara Burton

Bib: 14094•F

CO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:54
Rank: #13911
Start → 5K
23:54 | 7:42/mi
10K· 6.21 mi
48:12
Rank: #14389 (-478)
5K → 10K
24:18 | 7:49/mi
15K· 9.32 mi
1:11:45
Rank: #13719 (+670)
10K → 15K
23:33 | 7:35/mi
20K· 12.43 mi
1:36:05
Rank: #13635 (+84)
15K → 20K
24:20 | 7:50/mi
Half· 13.11 mi
1:41:11
Rank: #13530 (+105)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:59:18
Rank: #12850 (+680)
Half → 25K
18:07 | 7:28/mi
30K· 18.64 mi
2:22:42
Rank: #11861 (+989)
25K → 30K
23:24 | 7:32/mi
20M
2:32:57
Rank: #11455 (+406)
30K → 20M
10:15 | 7:33/mi
21M
2:40:49
Rank: #11134 (+321)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:46:15
Rank: #10957 (+177)
21M → 35K
5:26 | 7:16/mi
23M
2:55:24
Rank: #10562 (+395)
35K → 23M
9:09 | 7:18/mi
24M
3:02:25
Rank: #10218 (+344)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
3:08:31
Rank: #9940 (+278)
24M → 40K
6:06 | 7:08/mi
25.2M
3:11:09
Rank: #9812 (+128)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:17:31
Rank: #9374 (+438)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:11
Pace7:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:20
Pace7:21 /mi
📊Negative Split: 4.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:5823:547:4223:54
7:42
-
10K
6.21 mi11:19:1648:127:4524:18
7:49
+0:07
15K
9.32 mi11:42:491:11:457:4223:33
7:35
-0:14
20K
12.43 mi12:07:091:36:057:4424:20
7:50
+0:15
Half
13.11 mi12:12:151:41:117:435:06
7:29
-0:21
25K
15.53 mi12:30:221:59:187:4118:07
7:28
-0:01
30K
18.64 mi12:53:462:22:427:3923:24
7:32
+0:04
20M
20.00 mi13:04:012:32:577:3910:15
7:33
+0:01
21M
21.00 mi13:11:532:40:497:397:52
7:52
+0:19
35K
21.75 mi13:17:192:46:157:395:26
7:16
-0:36
23M
23.00 mi13:26:282:55:247:389:09
7:18
+0:02
24M
24.00 mi13:33:293:02:257:367:01
7:01
-0:17
40K
24.85 mi13:39:353:08:317:356:06
7:08
+0:07
25.2M
25.20 mi13:42:133:11:097:352:38
7:38
+0:30
Finish
26.22 mi13:48:353:17:317:326:22
6:15
-1:23

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

6:15 /mi

Average Pace

7:32 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

34:04

17% of race

Time at Steady Pace

1:46:57

54% of race

Time at Slower Pace

56:30

29% of race

Average Pace: 7:32 /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 mi10:54:5823:547:4223:54
7:42
#13911
10K
6.21 mi11:19:1648:127:4524:18
7:49
#14389
15K
9.32 mi11:42:491:11:457:4223:33
7:35
#13719
20K
12.43 mi12:07:091:36:057:4424:20
7:50
#13635
Half
13.11 mi12:12:151:41:117:435:06
7:29
#13530
25K
15.53 mi12:30:221:59:187:4118:07
7:28
#12850
30K
18.64 mi12:53:462:22:427:3923:24
7:32
#11861
20M
20.00 mi13:04:012:32:577:3910:15
7:33
#11455
21M
21.00 mi13:11:532:40:497:397:52
7:52
#11134
35K
21.75 mi13:17:192:46:157:395:26
7:16
#10957
23M
23.00 mi13:26:282:55:247:389:09
7:18
#10562
24M
24.00 mi13:33:293:02:257:367:01
7:01
#10218
40K
24.85 mi13:39:353:08:317:356:06
7:08
#9940
25.2M
25.20 mi13:42:133:11:097:352:38
7:38
#9812
Finish
26.22 mi13:48:353:17:317:326:22
6:15
#9374
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi139113843384312426(Top 44%)3119(Top 26%)3119(Top 57%)
10K6.21 mi3.10 mi14389-4784162-3194162-31915009(Top 53%)4538(Top 37%)4538(Top 83%)
15K9.32 mi3.11 mi13719+6703805+3573805+35712426(Top 44%)3119(Top 26%)3119(Top 57%)
20K12.43 mi3.11 mi13635+843800+53800+513528(Top 48%)3828(Top 31%)3828(Top 70%)
Half13.11 mi0.68 mi13530+1053747+533747+5311508(Top 41%)2667(Top 22%)2667(Top 49%)
25K15.53 mi2.42 mi12850+6803387+3603387+3609746(Top 34%)1995(Top 16%)1995(Top 36%)
30K18.64 mi3.11 mi11861+9892926+4612926+4617986(Top 28%)1388(Top 11%)1388(Top 25%)
20M20.00 mi1.36 mi11455+4062752+1742752+1747346(Top 26%)1292(Top 11%)1292(Top 24%)
21M21.00 mi1.00 mi11134+3212623+1292623+1296618(Top 23%)1162(Top 10%)1162(Top 21%)
35K21.75 mi0.75 mi10957+1772549+742549+747047(Top 25%)1320(Top 11%)1320(Top 24%)
23M23.00 mi1.25 mi10562+3952379+1702379+1705541(Top 20%)840(Top 7%)840(Top 15%)
24M24.00 mi1.00 mi10218+3442246+1332246+1334768(Top 17%)668(Top 5%)668(Top 12%)
40K24.85 mi0.85 mi9940+2782145+1012145+1014725(Top 17%)708(Top 6%)708(Top 13%)
25.2M25.20 mi0.35 mi9812+1282106+392106+394139(Top 15%)617(Top 5%)617(Top 11%)
Finish26.22 mi1.02 mi9374+4381933+1731933+1731723(Top 6%)123(Top 1%)123(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

12426

Females

3119

F18-39

3119

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

15009

Females

4538

F18-39

4538

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

12426

Females

3119

F18-39

3119

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

13528

Females

3828

F18-39

3828

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11508

Females

2667

F18-39

2667

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9746

Females

1995

F18-39

1995

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7986

Females

1388

F18-39

1388

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7346

Females

1292

F18-39

1292

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6618

Females

1162

F18-39

1162

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7047

Females

1320

F18-39

1320

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5541

Females

840

F18-39

840

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4768

Females

668

F18-39

668

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4725

Females

708

F18-39

708

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4139

Females

617

F18-39

617

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1723

Females

123

F18-39

123

Passing Analysis

Category:
Athletes Passed
5328*
Passed By
791
Net Change
+4537
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13911
5K → 10K126604-478#13911#14389
10K → 15K68818+670#14389#13719
15K → 20K238154+84#13719#13635
20K → Half1061+105#13635#13530
Half → 25K6800+680#13530#12850
25K → 30K9901+989#12850#11861
30K → 20M4093+406#11861#11455
20M → 21M3221+321#11455#11134
21M → 35K1792+177#11134#10957
35K → 23M3961+395#10957#10562
23M → 24M3451+344#10562#10218
24M → 40K283*5+278#10218#9940
40K → 25.2M1280+128#9940#9812
25.2M → Finish4380+438#9812#9374
TOTALS5328*791+4537

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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