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BOSTON MARATHON 2025

Miriam Marks

Bib: 20071•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 42%
Division (F50-54)
#0 / 1303
Top 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:01
Rank: #19167
Start → 5K
26:01 | 8:22/mi
10K· 6.21 mi
51:35
Rank: #18624 (+543)
5K → 10K
25:34 | 8:14/mi
15K· 9.32 mi
1:16:30
Rank: #17810 (+814)
10K → 15K
24:55 | 8:01/mi
20K· 12.43 mi
1:41:34
Rank: #17167 (+643)
15K → 20K
25:04 | 8:04/mi
Half· 13.11 mi
1:47:02
Rank: #17096 (+71)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:06:40
Rank: #16674 (+422)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:33:42
Rank: #16496 (+178)
25K → 30K
27:02 | 8:42/mi
20M
2:46:14
Rank: #16585 (-89)
30K → 20M
12:32 | 9:13/mi
21M
2:55:38
Rank: #16486 (+99)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:02:30
Rank: #16560 (-74)
21M → 35K
6:52 | 9:11/mi
23M
3:16:04
Rank: #17187 (-627)
35K → 23M
13:34 | 10:50/mi
24M
3:26:52
Rank: #17653 (-466)
23M → 24M
10:48 | 10:48/mi
40K· 24.85 mi
3:35:01
Rank: #17710 (-57)
24M → 40K
8:09 | 9:32/mi
25.2M
3:38:27
Rank: #17685 (+25)
40K → 25.2M
3:26 | 9:57/mi
Finish· 26.22 mi
3:47:35
Rank: #17744 (-59)
25.2M → Finish
9:08 | 8:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:02
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time2:00:33
Pace9:12 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1626:018:2226:01
8:22
-
10K
6.21 mi11:45:5051:358:1825:34
8:14
-0:08
15K
9.32 mi12:10:451:16:308:1224:55
8:01
-0:13
20K
12.43 mi12:35:491:41:348:1025:04
8:04
+0:03
Half
13.11 mi12:41:171:47:028:105:28
8:01
-0:03
25K
15.53 mi13:00:552:06:408:0919:38
8:06
+0:05
30K
18.64 mi13:27:572:33:428:1527:02
8:42
+0:36
20M
20.00 mi13:40:292:46:148:1912:32
9:13
+0:31
21M
21.00 mi13:49:532:55:388:229:24
9:24
+0:11
35K
21.75 mi13:56:453:02:308:236:52
9:11
-0:13
23M
23.00 mi14:10:193:16:048:3113:34
10:50
+1:39
24M
24.00 mi14:21:073:26:528:3710:48
10:48
-0:02
40K
24.85 mi14:29:163:35:018:398:09
9:32
-1:16
25.2M
25.20 mi14:32:423:38:278:403:26
9:57
+0:25
Finish
26.22 mi14:41:503:47:358:419:08
8:58
-0:59

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

8:01 /mi

Average Pace

8:41 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:40

56% of race

Time at Steady Pace

1:04:58

29% of race

Time at Slower Pace

35:57

16% of race

Average Pace: 8:41 /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 mi11:20:1626:018:2226:01
8:22
#19167
10K
6.21 mi11:45:5051:358:1825:34
8:14
#18624
15K
9.32 mi12:10:451:16:308:1224:55
8:01
#17810
20K
12.43 mi12:35:491:41:348:1025:04
8:04
#17167
Half
13.11 mi12:41:171:47:028:105:28
8:01
#17096
25K
15.53 mi13:00:552:06:408:0919:38
8:06
#16674
30K
18.64 mi13:27:572:33:428:1527:02
8:42
#16496
20M
20.00 mi13:40:292:46:148:1912:32
9:13
#16585
21M
21.00 mi13:49:532:55:388:229:24
9:24
#16486
35K
21.75 mi13:56:453:02:308:236:52
9:11
#16560
23M
23.00 mi14:10:193:16:048:3113:34
10:50
#17187
24M
24.00 mi14:21:073:26:528:3710:48
10:48
#17653
40K
24.85 mi14:29:163:35:018:398:09
9:32
#17710
25.2M
25.20 mi14:32:423:38:278:403:26
9:57
#17685
Finish
26.22 mi14:41:503:47:358:419:08
8:58
#17744
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi191677001700116211(Top 57%)5261(Top 43%)5261(Top 404%)
10K6.21 mi3.10 mi18624+5436694+3076694+30718112(Top 64%)6368(Top 52%)6368(Top 489%)
15K9.32 mi3.11 mi17810+8146214+4806214+48016211(Top 57%)5261(Top 43%)5261(Top 404%)
20K12.43 mi3.11 mi17167+6435841+3735841+37315428(Top 54%)4880(Top 40%)4880(Top 375%)
Half13.11 mi0.68 mi17096+715808+335808+3316107(Top 57%)5268(Top 43%)5268(Top 404%)
25K15.53 mi2.42 mi16674+4225573+2355573+23514650(Top 52%)4568(Top 37%)4568(Top 351%)
30K18.64 mi3.11 mi16496+1785523+505523+5016024(Top 56%)5477(Top 45%)5477(Top 420%)
20M20.00 mi1.36 mi16585-895601-785601-7817904(Top 63%)6653(Top 54%)6653(Top 511%)
21M21.00 mi1.00 mi16486+995577+245577+2415648(Top 55%)5541(Top 45%)5541(Top 425%)
35K21.75 mi0.75 mi16560-745638-615638-6119099(Top 67%)7494(Top 61%)7494(Top 575%)
23M23.00 mi1.25 mi17187-6276045-4076045-40722835(Top 80%)9511(Top 78%)9511(Top 730%)
24M24.00 mi1.00 mi17653-4666330-2856330-28523565(Top 83%)9903(Top 81%)9903(Top 760%)
40K24.85 mi0.85 mi17710-576393-636393-6318850(Top 66%)7550(Top 62%)7550(Top 579%)
25.2M25.20 mi0.35 mi17685+256391+26391+216875(Top 59%)6529(Top 53%)6529(Top 501%)
Finish26.22 mi1.02 mi17744-596434-436434-4318855(Top 66%)7515(Top 61%)7515(Top 577%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16211

Females

5261

F50-54

5261

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18112

Females

6368

F50-54

6368

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16211

Females

5261

F50-54

5261

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15428

Females

4880

F50-54

4880

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

16107

Females

5268

F50-54

5268

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14650

Females

4568

F50-54

4568

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

16024

Females

5477

F50-54

5477

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17904

Females

6653

F50-54

6653

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15648

Females

5541

F50-54

5541

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19099

Females

7494

F50-54

7494

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22835

Females

9511

F50-54

9511

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

23565

Females

9903

F50-54

9903

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18850

Females

7550

F50-54

7550

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16875

Females

6529

F50-54

6529

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18855

Females

7515

F50-54

7515

Passing Analysis

Category:
Athletes Passed
3388
Passed By
1965
Net Change
+1423
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19167
5K → 10K63592+543#19167#18624
10K → 15K82713+814#18624#17810
15K → 20K6474+643#17810#17167
20K → Half787+71#17167#17096
Half → 25K4319+422#17096#16674
25K → 30K308130+178#16674#16496
30K → 20M79168-89#16496#16585
20M → 21M15253+99#16585#16486
21M → 35K49123-74#16486#16560
35K → 23M25652-627#16560#17187
23M → 24M20486-466#17187#17653
24M → 40K44101-57#17653#17710
40K → 25.2M4621+25#17710#17685
25.2M → Finish47106-59#17685#17744
TOTALS33881965+1423
📊

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