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BOSTON MARATHON 2025

Margaret Dunn

Bib: 17372•F

NY

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
23:33
Rank: #12964
Start → 5K
23:33 | 7:35/mi
10K· 6.21 mi
48:14
Rank: #14455 (-1491)
5K → 10K
24:41 | 7:57/mi
15K· 9.32 mi
1:18:10
Rank: #18955 (-4500)
10K → 15K
29:56 | 9:38/mi
20K· 12.43 mi
1:48:19
Rank: #20509 (-1554)
15K → 20K
30:09 | 9:42/mi
Half· 13.11 mi
1:54:10
Rank: #20454 (+55)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:17:38
Rank: #20910 (-456)
Half → 25K
23:28 | 9:41/mi
30K· 18.64 mi
2:49:53
Rank: #21379 (-469)
25K → 30K
32:15 | 10:23/mi
20M
3:07:07
Rank: #22107 (-728)
30K → 20M
17:14 | 12:41/mi
21M
3:19:35
Rank: #22267 (-160)
20M → 21M
12:28 | 12:28/mi
35K· 21.75 mi
3:26:59
Rank: #22233 (+34)
21M → 35K
7:24 | 9:53/mi
23M
3:38:52
Rank: #22011 (+222)
35K → 23M
11:53 | 9:29/mi
24M
3:49:28
Rank: #22063 (-52)
23M → 24M
10:36 | 10:36/mi
40K· 24.85 mi
3:57:31
Rank: #21923 (+140)
24M → 40K
8:03 | 9:25/mi
25.2M
4:00:46
Rank: #21825 (+98)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
4:09:22
Rank: #21653 (+172)
25.2M → Finish
8:36 | 8:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:10
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:15:12
Pace10:19 /mi
📊Positive Split: 18.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3923:337:3523:33
7:35
-
10K
6.21 mi11:38:2048:147:4624:41
7:57
+0:22
15K
9.32 mi12:08:161:18:108:2329:56
9:38
+1:41
20K
12.43 mi12:38:251:48:198:4330:09
9:42
+0:04
Half
13.11 mi12:44:161:54:108:435:51
8:34
-1:08
25K
15.53 mi13:07:442:17:388:5223:28
9:41
+1:07
30K
18.64 mi13:39:592:49:539:0732:15
10:23
+0:42
20M
20.00 mi13:57:133:07:079:2117:14
12:41
+2:18
21M
21.00 mi14:09:413:19:359:3012:28
12:28
-0:13
35K
21.75 mi14:17:053:26:599:317:24
9:53
-2:35
23M
23.00 mi14:28:583:38:529:3111:53
9:29
-0:24
24M
24.00 mi14:39:343:49:289:3410:36
10:36
+1:07
40K
24.85 mi14:47:373:57:319:338:03
9:25
-1:11
25.2M
25.20 mi14:50:524:00:469:333:15
9:25
0:00
Finish
26.22 mi14:59:284:09:229:318:36
8:26
-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

7:35 /mi

Average Pace

9:31 /mi

Slowest Pace

12:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:02:41

25% of race

Time at Steady Pace

1:54:08

46% of race

Time at Slower Pace

1:12:33

29% of race

Average Pace: 9:31 /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 mi11:13:3923:337:3523:33
7:35
#12964
10K
6.21 mi11:38:2048:147:4624:41
7:57
#14455
15K
9.32 mi12:08:161:18:108:2329:56
9:38
#18955
20K
12.43 mi12:38:251:48:198:4330:09
9:42
#20509
Half
13.11 mi12:44:161:54:108:435:51
8:34
#20454
25K
15.53 mi13:07:442:17:388:5223:28
9:41
#20910
30K
18.64 mi13:39:592:49:539:0732:15
10:23
#21379
20M
20.00 mi13:57:133:07:079:2117:14
12:41
#22107
21M
21.00 mi14:09:413:19:359:3012:28
12:28
#22267
35K
21.75 mi14:17:053:26:599:317:24
9:53
#22233
23M
23.00 mi14:28:583:38:529:3111:53
9:29
#22011
24M
24.00 mi14:39:343:49:289:3410:36
10:36
#22063
40K
24.85 mi14:47:373:57:319:338:03
9:25
#21923
25.2M
25.20 mi14:50:524:00:469:333:15
9:25
#21825
Finish
26.22 mi14:59:284:09:229:318:36
8:26
#21653
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi129643302330224112(Top 85%)9734(Top 80%)9734(Top 178%)
10K6.21 mi3.10 mi14455-14914210-9084210-90816050(Top 57%)5151(Top 42%)5151(Top 94%)
15K9.32 mi3.11 mi18955-45006883-26736883-267324112(Top 85%)9734(Top 80%)9734(Top 178%)
20K12.43 mi3.11 mi20509-15547766-8837766-88323507(Top 83%)9426(Top 77%)9426(Top 172%)
Half13.11 mi0.68 mi20454+557738+287738+2819755(Top 70%)7343(Top 60%)7343(Top 134%)
25K15.53 mi2.42 mi20910-4567992-2547992-25422442(Top 79%)8898(Top 73%)8898(Top 163%)
30K18.64 mi3.11 mi21379-4698291-2998291-29922659(Top 80%)9136(Top 75%)9136(Top 167%)
20M20.00 mi1.36 mi22107-7288699-4088699-40826124(Top 92%)11072(Top 91%)11072(Top 202%)
21M21.00 mi1.00 mi22267-1608813-1148813-11424363(Top 86%)10212(Top 84%)10212(Top 187%)
35K21.75 mi0.75 mi22233+348811+28811+221608(Top 76%)8831(Top 72%)8831(Top 161%)
23M23.00 mi1.25 mi22011+2228723+888723+8818693(Top 66%)7353(Top 60%)7353(Top 134%)
24M24.00 mi1.00 mi22063-528773-508773-5023083(Top 81%)9676(Top 79%)9676(Top 177%)
40K24.85 mi0.85 mi21923+1408713+608713+6018391(Top 65%)7340(Top 60%)7340(Top 134%)
25.2M25.20 mi0.35 mi21825+988668+458668+4514304(Top 50%)5224(Top 43%)5224(Top 96%)
Finish26.22 mi1.02 mi21653+1728593+758593+7515882(Top 56%)5971(Top 49%)5971(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

24112

Females

9734

F18-39

9734

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16050

Females

5151

F18-39

5151

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

24112

Females

9734

F18-39

9734

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

23507

Females

9426

F18-39

9426

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19755

Females

7343

F18-39

7343

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

22442

Females

8898

F18-39

8898

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22659

Females

9136

F18-39

9136

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

26124

Females

11072

F18-39

11072

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

24363

Females

10212

F18-39

10212

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21608

Females

8831

F18-39

8831

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

18693

Females

7353

F18-39

7353

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

23083

Females

9676

F18-39

9676

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18391

Females

7340

F18-39

7340

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14304

Females

5224

F18-39

5224

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15882

Females

5971

F18-39

5971

Passing Analysis

Category:
Athletes Passed
1061
Passed By
9750
Net Change
-8689
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12964
5K → 10K341525-1491#12964#14455
10K → 15K34503-4500#14455#18955
15K → 20K191573-1554#18955#20509
20K → Half6510+55#20509#20454
Half → 25K53509-456#20454#20910
25K → 30K96565-469#20910#21379
30K → 20M10738-728#21379#22107
20M → 21M45205-160#22107#22267
21M → 35K6127+34#22267#22233
35K → 23M2275+222#22233#22011
23M → 24M3385-52#22011#22063
24M → 40K1422+140#22063#21923
40K → 25.2M980+98#21923#21825
25.2M → Finish1753+172#21825#21653
TOTALS10619750-8689
📊

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