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BOSTON MARATHON 2025

Samantha Marshall

Bib: 12150•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Female)
#0 / 12228
Top 7%
Division (F18-39)
#0 / 5469
Top 13%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:05
Rank: #8721
Start → 5K
22:05 | 7:06/mi
10K· 6.21 mi
43:32
Rank: #7903 (+818)
5K → 10K
21:27 | 6:54/mi
15K· 9.32 mi
1:05:02
Rank: #7606 (+297)
10K → 15K
21:30 | 6:55/mi
20K· 12.43 mi
1:26:50
Rank: #7417 (+189)
15K → 20K
21:48 | 7:01/mi
Half· 13.11 mi
1:31:35
Rank: #7396 (+21)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:48:42
Rank: #7256 (+140)
Half → 25K
17:07 | 7:04/mi
30K· 18.64 mi
2:11:29
Rank: #7027 (+229)
25K → 30K
22:47 | 7:20/mi
20M
2:21:34
Rank: #6910 (+117)
30K → 20M
10:05 | 7:25/mi
21M
2:29:35
Rank: #6852 (+58)
20M → 21M
8:01 | 8:01/mi
35K· 21.75 mi
2:35:03
Rank: #6829 (+23)
21M → 35K
5:28 | 7:18/mi
23M
2:44:40
Rank: #6827 (+2)
35K → 23M
9:37 | 7:41/mi
24M
2:52:08
Rank: #6793 (+34)
23M → 24M
7:28 | 7:28/mi
40K· 24.85 mi
2:58:27
Rank: #6716 (+77)
24M → 40K
6:19 | 7:23/mi
25.2M
3:01:12
Rank: #6684 (+32)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:08:18
Rank: #6575 (+109)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:35
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:36:43
Pace7:23 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:0922:057:0622:05
7:06
-
10K
6.21 mi11:11:3643:327:0021:27
6:54
-0:12
15K
9.32 mi11:33:061:05:026:5921:30
6:55
+0:01
20K
12.43 mi11:54:541:26:506:5921:48
7:01
+0:06
Half
13.11 mi11:59:391:31:356:594:45
6:58
-0:03
25K
15.53 mi12:16:461:48:427:0017:07
7:04
+0:06
30K
18.64 mi12:39:332:11:297:0322:47
7:20
+0:16
20M
20.00 mi12:49:382:21:347:0510:05
7:25
+0:05
21M
21.00 mi12:57:392:29:357:078:01
8:01
+0:36
35K
21.75 mi13:03:072:35:037:085:28
7:18
-0:43
23M
23.00 mi13:12:442:44:407:109:37
7:41
+0:23
24M
24.00 mi13:20:122:52:087:107:28
7:28
-0:13
40K
24.85 mi13:26:312:58:277:116:19
7:23
-0:05
25.2M
25.20 mi13:29:163:01:127:112:45
7:58
+0:35
Finish
26.22 mi13:36:223:08:187:117:06
6:58
-1:00

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

6:54 /mi

Average Pace

7:11 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:55

89% of race

Time at Steady Pace

20:23

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:11 /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 mi10:50:0922:057:0622:05
7:06
#8721
10K
6.21 mi11:11:3643:327:0021:27
6:54
#7903
15K
9.32 mi11:33:061:05:026:5921:30
6:55
#7606
20K
12.43 mi11:54:541:26:506:5921:48
7:01
#7417
Half
13.11 mi11:59:391:31:356:594:45
6:58
#7396
25K
15.53 mi12:16:461:48:427:0017:07
7:04
#7256
30K
18.64 mi12:39:332:11:297:0322:47
7:20
#7027
20M
20.00 mi12:49:382:21:347:0510:05
7:25
#6910
21M
21.00 mi12:57:392:29:357:078:01
8:01
#6852
35K
21.75 mi13:03:072:35:037:085:28
7:18
#6829
23M
23.00 mi13:12:442:44:407:109:37
7:41
#6827
24M
24.00 mi13:20:122:52:087:107:28
7:28
#6793
40K
24.85 mi13:26:312:58:277:116:19
7:23
#6716
25.2M
25.20 mi13:29:163:01:127:112:45
7:58
#6684
Finish
26.22 mi13:36:223:08:187:117:06
6:58
#6575
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8721124812487106(Top 25%)760(Top 6%)760(Top 14%)
10K6.21 mi3.10 mi7903+818963+285963+2857274(Top 26%)769(Top 6%)769(Top 14%)
15K9.32 mi3.11 mi7606+297873+90873+907106(Top 25%)760(Top 6%)760(Top 14%)
20K12.43 mi3.11 mi7417+189829+44829+446988(Top 25%)776(Top 6%)776(Top 14%)
Half13.11 mi0.68 mi7396+21824+5824+57366(Top 26%)864(Top 7%)864(Top 16%)
25K15.53 mi2.42 mi7256+140803+21803+216721(Top 24%)787(Top 6%)787(Top 14%)
30K18.64 mi3.11 mi7027+229778+25778+256659(Top 23%)888(Top 7%)888(Top 16%)
20M20.00 mi1.36 mi6910+1177787786524(Top 23%)968(Top 8%)968(Top 18%)
21M21.00 mi1.00 mi6852+58788-10788-107446(Top 26%)1480(Top 12%)1480(Top 27%)
35K21.75 mi0.75 mi6829+23795-7795-77304(Top 26%)1405(Top 11%)1405(Top 26%)
23M23.00 mi1.25 mi6827+2836-41836-417789(Top 27%)1726(Top 14%)1726(Top 32%)
24M24.00 mi1.00 mi6793+34851-15851-157469(Top 26%)1637(Top 13%)1637(Top 30%)
40K24.85 mi0.85 mi6716+77852-1852-16152(Top 22%)1192(Top 10%)1192(Top 22%)
25.2M25.20 mi0.35 mi6684+32862-10862-105855(Top 21%)1181(Top 10%)1181(Top 22%)
Finish26.22 mi1.02 mi6575+109856+6856+65537(Top 19%)1066(Top 9%)1066(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

7106

Females

760

F18-39

760

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7274

Females

769

F18-39

769

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

7106

Females

760

F18-39

760

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6988

Females

776

F18-39

776

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

7366

Females

864

F18-39

864

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6721

Females

787

F18-39

787

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6659

Females

888

F18-39

888

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6524

Females

968

F18-39

968

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7446

Females

1480

F18-39

1480

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7304

Females

1405

F18-39

1405

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7789

Females

1726

F18-39

1726

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

7469

Females

1637

F18-39

1637

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6152

Females

1192

F18-39

1192

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5855

Females

1181

F18-39

1181

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5537

Females

1066

F18-39

1066

Passing Analysis

Category:
Athletes Passed
2689
Passed By
543
Net Change
+2146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8721
5K → 10K83618+818#8721#7903
10K → 15K32427+297#7903#7606
15K → 20K22334+189#7606#7417
20K → Half3918+21#7417#7396
Half → 25K17636+140#7396#7256
25K → 30K28556+229#7256#7027
30K → 20M15841+117#7027#6910
20M → 21M12264+58#6910#6852
21M → 35K5835+23#6852#6829
35K → 23M9694+2#6829#6827
23M → 24M8652+34#6827#6793
24M → 40K10528+77#6793#6716
40K → 25.2M5321+32#6716#6684
25.2M → Finish12819+109#6684#6575
TOTALS2689543+2146
📊

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