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BOSTON MARATHON 2025

Sarah Marcinkiewicz

Bib: 30351•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:01
Rank: #23692
Start → 5K
29:01 | 9:20/mi
10K· 6.21 mi
58:44
Rank: #24046 (-354)
5K → 10K
29:43 | 9:34/mi
15K· 9.32 mi
1:28:27
Rank: #24007 (+39)
10K → 15K
29:43 | 9:34/mi
20K· 12.43 mi
1:58:13
Rank: #23773 (+234)
15K → 20K
29:46 | 9:35/mi
Half· 13.11 mi
2:04:36
Rank: #23755 (+18)
20K → Half
6:23 | 9:21/mi
25K· 15.53 mi
2:27:56
Rank: #23484 (+271)
Half → 25K
23:20 | 9:37/mi
30K· 18.64 mi
2:58:57
Rank: #23090 (+394)
25K → 30K
31:01 | 9:59/mi
20M
3:12:22
Rank: #22901 (+189)
30K → 20M
13:25 | 9:52/mi
21M
3:22:44
Rank: #22737 (+164)
20M → 21M
10:22 | 10:22/mi
35K· 21.75 mi
3:29:42
Rank: #22601 (+136)
21M → 35K
6:58 | 9:19/mi
23M
3:41:59
Rank: #22459 (+142)
35K → 23M
12:17 | 9:49/mi
24M
3:51:44
Rank: #22365 (+94)
23M → 24M
9:45 | 9:45/mi
40K· 24.85 mi
4:00:23
Rank: #22302 (+63)
24M → 40K
8:39 | 10:07/mi
25.2M
4:04:17
Rank: #22282 (+20)
40K → 25.2M
3:54 | 11:19/mi
Finish· 26.22 mi
4:13:22
Rank: #22157 (+125)
25.2M → Finish
9:05 | 8:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:36
Pace9:30 /mi
2nd Half
Distance13.11 mi
Time2:08:46
Pace9:49 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0329:019:2029:01
9:20
-
10K
6.21 mi12:18:4658:449:2729:43
9:34
+0:14
15K
9.32 mi12:48:291:28:279:2929:43
9:34
0:00
20K
12.43 mi13:18:151:58:139:3129:46
9:35
+0:01
Half
13.11 mi13:24:382:04:369:306:23
9:21
-0:14
25K
15.53 mi13:47:582:27:569:3123:20
9:37
+0:16
30K
18.64 mi14:18:592:58:579:3631:01
9:59
+0:22
20M
20.00 mi14:32:243:12:229:3713:25
9:52
-0:07
21M
21.00 mi14:42:463:22:449:3910:22
10:22
+0:30
35K
21.75 mi14:49:443:29:429:396:58
9:19
-1:03
23M
23.00 mi15:02:013:41:599:3912:17
9:49
+0:30
24M
24.00 mi15:11:463:51:449:399:45
9:45
-0:04
40K
24.85 mi15:20:254:00:239:408:39
10:07
+0:22
25.2M
25.20 mi15:24:194:04:179:423:54
11:19
+1:12
Finish
26.22 mi15:33:244:13:229:409:05
8:55
-2:24

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

8:55 /mi

Average Pace

9:40 /mi

Slowest Pace

11:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:04

18% of race

Time at Steady Pace

2:34:22

61% of race

Time at Slower Pace

53:56

21% of race

Average Pace: 9:40 /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 mi11:49:0329:019:2029:01
9:20
#23692
10K
6.21 mi12:18:4658:449:2729:43
9:34
#24046
15K
9.32 mi12:48:291:28:279:2929:43
9:34
#24007
20K
12.43 mi13:18:151:58:139:3129:46
9:35
#23773
Half
13.11 mi13:24:382:04:369:306:23
9:21
#23755
25K
15.53 mi13:47:582:27:569:3123:20
9:37
#23484
30K
18.64 mi14:18:592:58:579:3631:01
9:59
#23090
20M
20.00 mi14:32:243:12:229:3713:25
9:52
#22901
21M
21.00 mi14:42:463:22:449:3910:22
10:22
#22737
35K
21.75 mi14:49:443:29:429:396:58
9:19
#22601
23M
23.00 mi15:02:013:41:599:3912:17
9:49
#22459
24M
24.00 mi15:11:463:51:449:399:45
9:45
#22365
40K
24.85 mi15:20:254:00:239:408:39
10:07
#22302
25.2M
25.20 mi15:24:194:04:179:423:54
11:19
#22282
Finish
26.22 mi15:33:244:13:229:409:05
8:55
#22157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi236929526952623916(Top 84%)9615(Top 79%)9615(Top 176%)
10K6.21 mi3.10 mi24046-3549710-1849710-18424272(Top 85%)9842(Top 80%)9842(Top 180%)
15K9.32 mi3.11 mi24007+399679+319679+3123916(Top 84%)9615(Top 79%)9615(Top 176%)
20K12.43 mi3.11 mi23773+2349563+1169563+11623154(Top 82%)9225(Top 75%)9225(Top 169%)
Half13.11 mi0.68 mi23755+189548+159548+1523143(Top 81%)9226(Top 75%)9226(Top 169%)
25K15.53 mi2.42 mi23484+2719407+1419407+14122279(Top 78%)8805(Top 72%)8805(Top 161%)
30K18.64 mi3.11 mi23090+3949239+1689239+16821570(Top 76%)8539(Top 70%)8539(Top 156%)
20M20.00 mi1.36 mi22901+1899159+809159+8020547(Top 72%)8111(Top 66%)8111(Top 148%)
21M21.00 mi1.00 mi22737+1649081+789081+7819624(Top 69%)7701(Top 63%)7701(Top 141%)
35K21.75 mi0.75 mi22601+1369019+629019+6219672(Top 69%)7820(Top 64%)7820(Top 143%)
23M23.00 mi1.25 mi22459+1428971+488971+4819850(Top 70%)7976(Top 65%)7976(Top 146%)
24M24.00 mi1.00 mi22365+948942+298942+2920585(Top 72%)8386(Top 69%)8386(Top 153%)
40K24.85 mi0.85 mi22302+638922+208922+2020858(Top 73%)8593(Top 70%)8593(Top 157%)
25.2M25.20 mi0.35 mi22282+208916+68916+621583(Top 76%)8952(Top 73%)8952(Top 164%)
Finish26.22 mi1.02 mi22157+1258870+468870+4618633(Top 66%)7405(Top 61%)7405(Top 135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

23916

Females

9615

F18-39

9615

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24272

Females

9842

F18-39

9842

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

23916

Females

9615

F18-39

9615

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23154

Females

9225

F18-39

9225

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

23143

Females

9226

F18-39

9226

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22279

Females

8805

F18-39

8805

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21570

Females

8539

F18-39

8539

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

20547

Females

8111

F18-39

8111

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19624

Females

7701

F18-39

7701

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19672

Females

7820

F18-39

7820

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19850

Females

7976

F18-39

7976

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

20585

Females

8386

F18-39

8386

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20858

Females

8593

F18-39

8593

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21583

Females

8952

F18-39

8952

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18633

Females

7405

F18-39

7405

Passing Analysis

Category:
Athletes Passed
2282
Passed By
747
Net Change
+1535
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23692
5K → 10K112466-354#23692#24046
10K → 15K167128+39#24046#24007
15K → 20K27036+234#24007#23773
20K → Half2810+18#23773#23755
Half → 25K28413+271#23755#23484
25K → 30K42228+394#23484#23090
30K → 20M1934+189#23090#22901
20M → 21M1728+164#22901#22737
21M → 35K1371+136#22737#22601
35K → 23M15513+142#22601#22459
23M → 24M10814+94#22459#22365
24M → 40K7714+63#22365#22302
40K → 25.2M3010+20#22302#22282
25.2M → Finish1272+125#22282#22157
TOTALS2282747+1535
📊

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