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BOSTON MARATHON 2025

Emily Nelson

Bib: 27722•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
32:55
Rank: #26946
Start → 5K
10:36/mi
32:55 split
10K· 6.21 mi
1:06:44
Rank: #26906 (+40)
5K → 10K
10:53/mi
33:49 split
15K· 9.32 mi
1:39:18
Rank: #26552 (+354)
10K → 15K
10:29/mi
32:34 split
20K· 12.43 mi
2:13:02
Rank: #26324 (+228)
15K → 20K
10:51/mi
33:44 split
Half· 13.11 mi
2:20:06
Rank: #26293 (+31)
20K → Half
10:21/mi
7:04 split
25K· 15.53 mi
2:47:10
Rank: #26135 (+158)
Half → 25K
11:10/mi
27:04 split
30K· 18.64 mi
3:22:29
Rank: #25846 (+289)
25K → 30K
11:22/mi
35:19 split
20M
3:36:57
Rank: #25659 (+187)
30K → 20M
10:39/mi
14:28 split
21M
3:47:33
Rank: #25460 (+199)
20M → 21M
10:36/mi
10:36 split
35K· 21.75 mi
3:55:44
Rank: #25418 (+42)
21M → 35K
10:56/mi
8:11 split
23M
4:09:13
Rank: #25295 (+123)
35K → 23M
10:46/mi
13:29 split
24M
4:19:43
Rank: #25204 (+91)
23M → 24M
10:30/mi
10:30 split
40K· 24.85 mi
4:28:52
Rank: #25133 (+71)
24M → 40K
10:42/mi
9:09 split
25.2M
4:32:57
Rank: #25113 (+20)
40K → 25.2M
11:50/mi
4:05 split
Finish· 26.22 mi
4:43:22
Rank: #25070 (+43)
25.2M → Finish
10:13/mi
10:25 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:06
Pace10:41 /mi
2nd Half
Distance13.11 mi
Time2:23:16
Pace10:56 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:2832:5510:3632:55
10:36
-
10K
6.21 mi12:29:171:06:4410:4433:49
10:53
+0:17
15K
9.32 mi13:01:511:39:1810:3932:34
10:29
-0:24
20K
12.43 mi13:35:352:13:0210:4233:44
10:51
+0:22
Half
13.11 mi13:42:392:20:0610:417:04
10:21
-0:30
25K
15.53 mi14:09:432:47:1010:4627:04
11:10
+0:49
30K
18.64 mi14:45:023:22:2910:5235:19
11:22
+0:12
20M
20.00 mi14:59:303:36:5710:5114:28
10:39
-0:43
21M
21.00 mi15:10:063:47:3310:5010:36
10:36
-0:03
35K
21.75 mi15:18:173:55:4410:508:11
10:56
+0:20
23M
23.00 mi15:31:464:09:1310:5013:29
10:46
-0:10
24M
24.00 mi15:42:164:19:4310:4910:30
10:30
-0:16
40K
24.85 mi15:51:254:28:5210:499:09
10:42
+0:12
25.2M
25.20 mi15:55:304:32:5710:504:05
11:50
+1:08
Finish
26.22 mi16:05:554:43:2210:4910:25
10:13
-1:37

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

10:13 /mi

Average Pace

10:49 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:03:58

86% of race

Time at Steady Pace

39:24

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:48 /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 mi11:55:2832:5510:3632:55
10:36
#26946
10K
6.21 mi12:29:171:06:4410:4433:49
10:53
#26906
15K
9.32 mi13:01:511:39:1810:3932:34
10:29
#26552
20K
12.43 mi13:35:352:13:0210:4233:44
10:51
#26324
Half
13.11 mi13:42:392:20:0610:417:04
10:21
#26293
25K
15.53 mi14:09:432:47:1010:4627:04
11:10
#26135
30K
18.64 mi14:45:023:22:2910:5235:19
11:22
#25846
20M
20.00 mi14:59:303:36:5710:5114:28
10:39
#25659
21M
21.00 mi15:10:063:47:3310:5010:36
10:36
#25460
35K
21.75 mi15:18:173:55:4410:508:11
10:56
#25418
23M
23.00 mi15:31:464:09:1310:5013:29
10:46
#25295
24M
24.00 mi15:42:164:19:4310:4910:30
10:30
#25204
40K
24.85 mi15:51:254:28:5210:499:09
10:42
#25133
25.2M
25.20 mi15:55:304:32:5710:504:05
11:50
#25113
Finish
26.22 mi16:05:554:43:2210:4910:25
10:13
#25070
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26946112931129325896(Top 91%)10738(Top 88%)10738(Top 196%)
10K6.21 mi3.10 mi26906+4011289+411289+426890(Top 95%)11301(Top 92%)11301(Top 207%)
15K9.32 mi3.11 mi26552+35411086+20311086+20325896(Top 91%)10738(Top 88%)10738(Top 196%)
20K12.43 mi3.11 mi26324+22810962+12410962+12425788(Top 91%)10691(Top 87%)10691(Top 195%)
Half13.11 mi0.68 mi26293+3110941+2110941+2125523(Top 90%)10559(Top 86%)10559(Top 193%)
25K15.53 mi2.42 mi26135+15810861+8010861+8025433(Top 90%)10533(Top 86%)10533(Top 193%)
30K18.64 mi3.11 mi25846+28910740+12110740+12124638(Top 87%)10199(Top 83%)10199(Top 186%)
20M20.00 mi1.36 mi25659+18710661+7910661+7922805(Top 80%)9321(Top 76%)9321(Top 170%)
21M21.00 mi1.00 mi25460+19910564+9710564+9720295(Top 71%)8078(Top 66%)8078(Top 148%)
35K21.75 mi0.75 mi25418+4210551+1310551+1324049(Top 85%)10089(Top 83%)10089(Top 184%)
23M23.00 mi1.25 mi25295+12310491+6010491+6022666(Top 80%)9431(Top 77%)9431(Top 172%)
24M24.00 mi1.00 mi25204+9110453+3810453+3822794(Top 80%)9540(Top 78%)9540(Top 174%)
40K24.85 mi0.85 mi25133+7110420+3310420+3322428(Top 79%)9434(Top 77%)9434(Top 172%)
25.2M25.20 mi0.35 mi25113+2010412+810412+822819(Top 80%)9587(Top 78%)9587(Top 175%)
Finish26.22 mi1.02 mi25070+4310398+1410398+1423560(Top 83%)9959(Top 81%)9959(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25896

Females

10738

F18-39

10738

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

26890

Females

11301

F18-39

11301

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25896

Females

10738

F18-39

10738

15K→20K

9.3 - 12.4 mi

Top 91%
×5stories
+106ft-86ft

Overall

25788

Females

10691

F18-39

10691

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

25523

Females

10559

F18-39

10559

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25433

Females

10533

F18-39

10533

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24638

Females

10199

F18-39

10199

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22805

Females

9321

F18-39

9321

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20295

Females

8078

F18-39

8078

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24049

Females

10089

F18-39

10089

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22666

Females

9431

F18-39

9431

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

22794

Females

9540

F18-39

9540

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22428

Females

9434

F18-39

9434

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22819

Females

9587

F18-39

9587

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

23560

Females

9959

F18-39

9959

Passing Analysis

Category:
Athletes Passed
2103
Passed By
227
Net Change
+1876
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26946
5K → 10K175135+40#26946#26906
10K → 15K3606+354#26906#26552
15K → 20K25224+228#26552#26324
20K → Half398+31#26324#26293
Half → 25K17618+158#26293#26135
25K → 30K2934+289#26135#25846
30K → 20M1870+187#25846#25659
20M → 21M1990+199#25659#25460
21M → 35K464+42#25460#25418
35K → 23M1307+123#25418#25295
23M → 24M976+91#25295#25204
24M → 40K732+71#25204#25133
40K → 25.2M233+20#25133#25113
25.2M → Finish5310+43#25113#25070
TOTALS2103227+1876
📊

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