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BOSTON MARATHON 2025

Samantha Kolor

Bib: 15724•F

SC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 28%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:42
Rank: #10431
Start → 5K
22:42 | 7:18/mi
10K· 6.21 mi
45:16
Rank: #10220 (+211)
5K → 10K
22:34 | 7:16/mi
15K· 9.32 mi
1:08:05
Rank: #10244 (-24)
10K → 15K
22:49 | 7:21/mi
20K· 12.43 mi
1:30:39
Rank: #9823 (+421)
15K → 20K
22:34 | 7:16/mi
Half· 13.11 mi
1:35:32
Rank: #9757 (+66)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:53:07
Rank: #9418 (+339)
Half → 25K
17:35 | 7:15/mi
30K· 18.64 mi
2:16:18
Rank: #8948 (+470)
25K → 30K
23:11 | 7:28/mi
20M
2:26:31
Rank: #8747 (+201)
30K → 20M
10:13 | 7:31/mi
21M
2:34:26
Rank: #8583 (+164)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:39:52
Rank: #8484 (+99)
21M → 35K
5:26 | 7:16/mi
23M
2:49:27
Rank: #8358 (+126)
35K → 23M
9:35 | 7:39/mi
24M
2:56:48
Rank: #8234 (+124)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:03:15
Rank: #8159 (+75)
24M → 40K
6:27 | 7:33/mi
25.2M
3:06:06
Rank: #8133 (+26)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:13:22
Rank: #8024 (+109)
25.2M → Finish
7:16 | 7:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:32
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:37:50
Pace7:28 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5022:427:1822:42
7:18
-
10K
6.21 mi11:16:2445:167:1722:34
7:16
-0:02
15K
9.32 mi11:39:131:08:057:1822:49
7:21
+0:05
20K
12.43 mi12:01:471:30:397:1822:34
7:16
-0:05
Half
13.11 mi12:06:401:35:327:174:53
7:09
-0:07
25K
15.53 mi12:24:151:53:077:1717:35
7:15
+0:06
30K
18.64 mi12:47:262:16:187:1923:11
7:28
+0:13
20M
20.00 mi12:57:392:26:317:2010:13
7:31
+0:03
21M
21.00 mi13:05:342:34:267:217:55
7:55
+0:24
35K
21.75 mi13:11:002:39:527:215:26
7:16
-0:39
23M
23.00 mi13:20:352:49:277:229:35
7:39
+0:23
24M
24.00 mi13:27:562:56:487:227:21
7:21
-0:18
40K
24.85 mi13:34:233:03:157:226:27
7:33
+0:12
25.2M
25.20 mi13:37:143:06:067:232:51
8:16
+0:43
Finish
26.22 mi13:44:303:13:227:237:16
7:08
-1:08

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

7:08 /mi

Average Pace

7:23 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:36

94% of race

Time at Steady Pace

10:46

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:53:5022:427:1822:42
7:18
#10431
10K
6.21 mi11:16:2445:167:1722:34
7:16
#10220
15K
9.32 mi11:39:131:08:057:1822:49
7:21
#10244
20K
12.43 mi12:01:471:30:397:1822:34
7:16
#9823
Half
13.11 mi12:06:401:35:327:174:53
7:09
#9757
25K
15.53 mi12:24:151:53:077:1717:35
7:15
#9418
30K
18.64 mi12:47:262:16:187:1923:11
7:28
#8948
20M
20.00 mi12:57:392:26:317:2010:13
7:31
#8747
21M
21.00 mi13:05:342:34:267:217:55
7:55
#8583
35K
21.75 mi13:11:002:39:527:215:26
7:16
#8484
23M
23.00 mi13:20:352:49:277:229:35
7:39
#8358
24M
24.00 mi13:27:562:56:487:227:21
7:21
#8234
40K
24.85 mi13:34:233:03:157:226:27
7:33
#8159
25.2M
25.20 mi13:37:143:06:067:232:51
8:16
#8133
Finish
26.22 mi13:44:303:13:227:237:16
7:08
#8024
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi104312002200210364(Top 36%)2056(Top 17%)2056(Top 38%)
10K6.21 mi3.10 mi10220+2111915+871915+8710046(Top 35%)1847(Top 15%)1847(Top 34%)
15K9.32 mi3.11 mi10244-241947-321947-3210364(Top 36%)2056(Top 17%)2056(Top 38%)
20K12.43 mi3.11 mi9823+4211782+1651782+1658739(Top 31%)1416(Top 12%)1416(Top 26%)
Half13.11 mi0.68 mi9757+661757+251757+258779(Top 31%)1391(Top 11%)1391(Top 25%)
25K15.53 mi2.42 mi9418+3391640+1171640+1178025(Top 28%)1229(Top 10%)1229(Top 22%)
30K18.64 mi3.11 mi8948+4701490+1501490+1507494(Top 26%)1202(Top 10%)1202(Top 22%)
20M20.00 mi1.36 mi8747+2011439+511439+517158(Top 25%)1205(Top 10%)1205(Top 22%)
21M21.00 mi1.00 mi8583+1641402+371402+376913(Top 24%)1271(Top 10%)1271(Top 23%)
35K21.75 mi0.75 mi8484+991387+151387+157026(Top 25%)1299(Top 11%)1299(Top 24%)
23M23.00 mi1.25 mi8358+1261377+101377+107629(Top 27%)1663(Top 14%)1663(Top 30%)
24M24.00 mi1.00 mi8234+1241363+141363+146752(Top 24%)1361(Top 11%)1361(Top 25%)
40K24.85 mi0.85 mi8159+751362+11362+17077(Top 25%)1579(Top 13%)1579(Top 29%)
25.2M25.20 mi0.35 mi8133+261368-61368-67497(Top 26%)1837(Top 15%)1837(Top 34%)
Finish26.22 mi1.02 mi8024+1091360+81360+86606(Top 23%)1492(Top 12%)1492(Top 27%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10364

Females

2056

F18-39

2056

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

10046

Females

1847

F18-39

1847

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10364

Females

2056

F18-39

2056

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8739

Females

1416

F18-39

1416

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8779

Females

1391

F18-39

1391

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

8025

Females

1229

F18-39

1229

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7494

Females

1202

F18-39

1202

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

7158

Females

1205

F18-39

1205

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6913

Females

1271

F18-39

1271

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7026

Females

1299

F18-39

1299

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7629

Females

1663

F18-39

1663

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6752

Females

1361

F18-39

1361

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

7077

Females

1579

F18-39

1579

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7497

Females

1837

F18-39

1837

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6606

Females

1492

F18-39

1492

Passing Analysis

Category:
Athletes Passed
3007*
Passed By
600
Net Change
+2407
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10431
5K → 10K374163+211#10431#10220
10K → 15K160184-24#10220#10244
15K → 20K442*21+421#10244#9823
20K → Half7610+66#9823#9757
Half → 25K35415+339#9757#9418
25K → 30K49525+470#9418#8948
30K → 20M21514+201#8948#8747
20M → 21M18622+164#8747#8583
21M → 35K11415+99#8583#8484
35K → 23M16943+126#8484#8358
23M → 24M14420+124#8358#8234
24M → 40K9823+75#8234#8159
40K → 25.2M4317+26#8159#8133
25.2M → Finish13728+109#8133#8024
TOTALS3007*600+2407

* 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