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BOSTON MARATHON 2025

Emily Nelson

Bib: 17489•F

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 22%
Division (F18-39)
#0 / 5469
Top 38%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:13/mi
45:44
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:08:33
↑ 67↓ 78
20K· 12.43 mi
7:31/mi
1:31:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:37:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:37/mi
1:55:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:20:27
↑ 181↓ 1480.2%
20M
8:26/mi
2:31:54
↑ 64↓ 500.2%
21M
8:26/mi
2:40:20
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
2:46:17
↑ 17↓ 861.7%
23M
8:09/mi
2:56:30
↑ 23↓ 630.6%
24M
8:09/mi
3:04:39
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:11:36
↓ 200.3%
25.2M
8:07/mi
3:14:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:07/mi
3:22:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:02
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:45:38
Pace8:03 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4623:207:3123:20
7:31
-
10K
6.21 mi11:38:1045:447:2222:24
7:13
-0:18
15K
9.32 mi12:00:591:08:337:2122:49
7:21
+0:08
20K
12.43 mi12:24:211:31:557:2423:22
7:31
+0:10
Half
13.11 mi12:29:281:37:027:245:07
7:30
-0:01
25K
15.53 mi12:47:551:55:297:2618:27
7:37
+0:07
30K
18.64 mi13:12:532:20:277:3224:58
8:02
+0:25
20M
20.00 mi13:24:202:31:547:3611:27
8:26
+0:24
21M
21.00 mi13:32:462:40:207:388:26
8:26
0:00
35K
21.75 mi13:38:432:46:177:395:57
7:57
-0:29
23M
23.00 mi13:48:562:56:307:4010:13
8:09
+0:12
24M
24.00 mi13:57:053:04:397:428:09
8:09
0:00
40K
24.85 mi14:04:023:11:367:436:57
8:07
-0:02
25.2M
25.20 mi14:06:503:14:247:432:48
8:07
0:00
Finish
26.22 mi14:15:063:22:407:448:16
8:07
0:00

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

7:13 /mi

Average Pace

7:44 /mi

Slowest Pace

8:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:29

57% of race

Time at Steady Pace

1:27:11

43% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi11:15:4623:207:3123:20
7:31
#12363
10K
6.21 mi11:38:1045:447:2222:24
7:13
#10879
15K
9.32 mi12:00:591:08:337:2122:49
7:21
#10668
20K
12.43 mi12:24:211:31:557:2423:22
7:31
#10738
Half
13.11 mi12:29:281:37:027:245:07
7:30
#10786
25K
15.53 mi12:47:551:55:297:2618:27
7:37
#10742
30K
18.64 mi13:12:532:20:277:3224:58
8:02
#10912
20M
20.00 mi13:24:202:31:547:3611:27
8:26
#11048
21M
21.00 mi13:32:462:40:207:388:26
8:26
#10954
35K
21.75 mi13:38:432:46:177:395:57
7:57
#10964
23M
23.00 mi13:48:562:56:307:4010:13
8:09
#10933
24M
24.00 mi13:57:053:04:397:428:09
8:09
#10962
40K
24.85 mi14:04:023:11:367:436:57
8:07
#10925
25.2M
25.20 mi14:06:503:14:247:432:48
8:07
#10843
Finish
26.22 mi14:15:063:22:407:448:16
8:07
#10937
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi123632997299710372(Top 37%)2064(Top 17%)2064(Top 38%)
10K6.21 mi3.10 mi10879+14842249+7482249+7489602(Top 34%)1647(Top 13%)1647(Top 30%)
15K9.32 mi3.11 mi10668+2112169+802169+8010372(Top 37%)2064(Top 17%)2064(Top 38%)
20K12.43 mi3.11 mi10738-702210-412210-4110964(Top 39%)2457(Top 20%)2457(Top 45%)
Half13.11 mi0.68 mi10786-482235-252235-2511759(Top 41%)2798(Top 23%)2798(Top 51%)
25K15.53 mi2.42 mi10742+442255-202255-2010871(Top 38%)2519(Top 21%)2519(Top 46%)
30K18.64 mi3.11 mi10912-1702419-1642419-16411651(Top 41%)3116(Top 25%)3116(Top 57%)
20M20.00 mi1.36 mi11048-1362529-1102529-11013353(Top 47%)4177(Top 34%)4177(Top 76%)
21M21.00 mi1.00 mi10954+942525+42525+49998(Top 35%)2621(Top 21%)2621(Top 48%)
35K21.75 mi0.75 mi10964-102554-292554-2911954(Top 42%)3611(Top 30%)3611(Top 66%)
23M23.00 mi1.25 mi10933+312581-272581-2711075(Top 39%)3277(Top 27%)3277(Top 60%)
24M24.00 mi1.00 mi10962-292637-562637-5612287(Top 43%)3957(Top 32%)3957(Top 72%)
40K24.85 mi0.85 mi10925+372656-192656-1911017(Top 39%)3434(Top 28%)3434(Top 63%)
25.2M25.20 mi0.35 mi10843+822627+292627+296728(Top 24%)1556(Top 13%)1556(Top 28%)
Finish26.22 mi1.02 mi10937-942709-822709-8213741(Top 48%)4838(Top 40%)4838(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10372

Females

2064

F18-39

2064

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9602

Females

1647

F18-39

1647

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10372

Females

2064

F18-39

2064

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10964

Females

2457

F18-39

2457

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11759

Females

2798

F18-39

2798

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10871

Females

2519

F18-39

2519

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11651

Females

3116

F18-39

3116

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13353

Females

4177

F18-39

4177

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9998

Females

2621

F18-39

2621

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11954

Females

3611

F18-39

3611

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11075

Females

3277

F18-39

3277

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12287

Females

3957

F18-39

3957

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11017

Females

3434

F18-39

3434

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6728

Females

1556

F18-39

1556

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13741

Females

4838

F18-39

4838

Passing Analysis

Category:
Athletes Passed
3002
Passed By
1576
Net Change
+1426
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12363
5K → 10K149713+1484#12363#10879
10K → 15K27463+211#10879#10668
15K → 20K151221-70#10668#10738
20K → Half2169-48#10738#10786
Half → 25K182138+44#10786#10742
25K → 30K190360-170#10742#10912
30K → 20M83219-136#10912#11048
20M → 21M14753+94#11048#10954
21M → 35K5161-10#10954#10964
35K → 23M12089+31#10964#10933
23M → 24M6998-29#10933#10962
24M → 40K9053+37#10962#10925
40K → 25.2M875+82#10925#10843
25.2M → Finish40134-94#10843#10937
TOTALS30021576+1426
📊

Passing Visuals

Category:
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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