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BOSTON MARATHON 2025

Laura Koch

Bib: 5958•F

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
20:16
Rank: #4026
Start → 5K
20:16 | 6:31/mi
10K· 6.21 mi
40:40
Rank: #4113 (-87)
5K → 10K
20:24 | 6:34/mi
15K· 9.32 mi
1:01:11
Rank: #4136 (-23)
10K → 15K
20:31 | 6:36/mi
20K· 12.43 mi
1:22:07
Rank: #4242 (-106)
15K → 20K
20:56 | 6:44/mi
Half· 13.11 mi
1:26:46
Rank: #4326 (-84)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:43:40
Rank: #4573 (-247)
Half → 25K
16:54 | 6:58/mi
30K· 18.64 mi
2:06:17
Rank: #4957 (-384)
25K → 30K
22:37 | 7:17/mi
20M
2:16:24
Rank: #5106 (-149)
30K → 20M
10:07 | 7:27/mi
21M
2:24:22
Rank: #5233 (-127)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:30:00
Rank: #5357 (-124)
21M → 35K
5:38 | 7:32/mi
23M
2:39:26
Rank: #5398 (-41)
35K → 23M
9:26 | 7:32/mi
24M
2:47:04
Rank: #5468 (-70)
23M → 24M
7:38 | 7:38/mi
40K· 24.85 mi
2:53:37
Rank: #5486 (-18)
24M → 40K
6:33 | 7:40/mi
25.2M
2:56:04
Rank: #5396 (+90)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
3:03:18
Rank: #5375 (+21)
25.2M → Finish
7:14 | 7:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:46
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:36:32
Pace7:22 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0020:166:3120:16
6:31
-
10K
6.21 mi10:46:2440:406:3320:24
6:34
+0:03
15K
9.32 mi11:06:551:01:116:3420:31
6:36
+0:02
20K
12.43 mi11:27:511:22:076:3620:56
6:44
+0:08
Half
13.11 mi11:32:301:26:466:374:39
6:49
+0:05
25K
15.53 mi11:49:241:43:406:4016:54
6:58
+0:09
30K
18.64 mi12:12:012:06:176:4622:37
7:17
+0:19
20M
20.00 mi12:22:082:16:246:4910:07
7:27
+0:10
21M
21.00 mi12:30:062:24:226:527:58
7:58
+0:31
35K
21.75 mi12:35:442:30:006:545:38
7:32
-0:26
23M
23.00 mi12:45:102:39:266:569:26
7:32
0:00
24M
24.00 mi12:52:482:47:046:587:38
7:38
+0:06
40K
24.85 mi12:59:212:53:376:596:33
7:40
+0:02
25.2M
25.20 mi13:01:482:56:046:592:27
7:06
-0:34
Finish
26.22 mi13:09:023:03:187:007:14
7:06
0:00

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

6:31 /mi

Average Pace

7:00 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:46

47% of race

Time at Steady Pace

49:12

27% of race

Time at Slower Pace

47:20

26% 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 mi10:26:0020:166:3120:16
6:31
#4026
10K
6.21 mi10:46:2440:406:3320:24
6:34
#4113
15K
9.32 mi11:06:551:01:116:3420:31
6:36
#4136
20K
12.43 mi11:27:511:22:076:3620:56
6:44
#4242
Half
13.11 mi11:32:301:26:466:374:39
6:49
#4326
25K
15.53 mi11:49:241:43:406:4016:54
6:58
#4573
30K
18.64 mi12:12:012:06:176:4622:37
7:17
#4957
20M
20.00 mi12:22:082:16:246:4910:07
7:27
#5106
21M
21.00 mi12:30:062:24:226:527:58
7:58
#5233
35K
21.75 mi12:35:442:30:006:545:38
7:32
#5357
23M
23.00 mi12:45:102:39:266:569:26
7:32
#5398
24M
24.00 mi12:52:482:47:046:587:38
7:38
#5468
40K
24.85 mi12:59:212:53:376:596:33
7:40
#5486
25.2M
25.20 mi13:01:482:56:046:592:27
7:06
#5396
Finish
26.22 mi13:09:023:03:187:007:14
7:06
#5375
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi40262232234284(Top 15%)253(Top 2%)253(Top 5%)
10K6.21 mi3.10 mi4113-87230-7230-74217(Top 15%)246(Top 2%)246(Top 4%)
15K9.32 mi3.11 mi4136-23231-1231-14284(Top 15%)253(Top 2%)253(Top 5%)
20K12.43 mi3.11 mi4242-106247-16247-164783(Top 17%)346(Top 3%)346(Top 6%)
Half13.11 mi0.68 mi4326-84257-10257-106345(Top 22%)607(Top 5%)607(Top 11%)
25K15.53 mi2.42 mi4573-247291-34291-346137(Top 22%)620(Top 5%)620(Top 11%)
30K18.64 mi3.11 mi4957-384366-75366-756342(Top 22%)773(Top 6%)773(Top 14%)
20M20.00 mi1.36 mi5106-149399-33399-336674(Top 23%)1026(Top 8%)1026(Top 19%)
21M21.00 mi1.00 mi5233-127427-28427-287178(Top 25%)1367(Top 11%)1367(Top 25%)
35K21.75 mi0.75 mi5357-124452-25452-258919(Top 31%)2113(Top 17%)2113(Top 39%)
23M23.00 mi1.25 mi5398-41471-19471-196781(Top 24%)1315(Top 11%)1315(Top 24%)
24M24.00 mi1.00 mi5468-70499-28499-288660(Top 30%)2155(Top 18%)2155(Top 39%)
40K24.85 mi0.85 mi5486-18516-17516-177839(Top 28%)1904(Top 16%)1904(Top 35%)
25.2M25.20 mi0.35 mi5396+90507+9507+91736(Top 6%)152(Top 1%)152(Top 3%)
Finish26.22 mi1.02 mi5375+21514-7514-76418(Top 23%)1418(Top 12%)1418(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4284

Females

253

F18-39

253

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4217

Females

246

F18-39

246

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4284

Females

253

F18-39

253

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4783

Females

346

F18-39

346

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6345

Females

607

F18-39

607

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6137

Females

620

F18-39

620

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6342

Females

773

F18-39

773

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6674

Females

1026

F18-39

1026

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7178

Females

1367

F18-39

1367

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8919

Females

2113

F18-39

2113

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6781

Females

1315

F18-39

1315

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8660

Females

2155

F18-39

2155

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7839

Females

1904

F18-39

1904

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1736

Females

152

F18-39

152

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6418

Females

1418

F18-39

1418

Passing Analysis

Category:
Athletes Passed
783
Passed By
2132
Net Change
-1349
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4026
5K → 10K121208-87#4026#4113
10K → 15K80103-23#4113#4136
15K → 20K69175-106#4136#4242
20K → Half892-84#4242#4326
Half → 25K53300-247#4326#4573
25K → 30K64448-384#4573#4957
30K → 20M36185-149#4957#5106
20M → 21M53180-127#5106#5233
21M → 35K17141-124#5233#5357
35K → 23M69110-41#5357#5398
23M → 24M2999-70#5398#5468
24M → 40K4058-18#5468#5486
40K → 25.2M900+90#5486#5396
25.2M → Finish5433+21#5396#5375
TOTALS7832132-1349
📊

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