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BOSTON MARATHON 2025

Emily Sheahan

Bib: 20903•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Masters (Masters Women)
#0 / 6759
Top 20%
Division (F50-54)
#0 / 1303
Top 12%
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
7:57/mi
24:43
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
49:38
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:14:28
↑ 67↓ 78
20K· 12.43 mi
8:06/mi
1:39:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:44:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:04:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:19/mi
2:30:24
↑ 181↓ 1480.2%
20M
8:17/mi
2:41:40
↑ 64↓ 500.2%
21M
8:31/mi
2:50:11
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:56:05
↑ 17↓ 861.7%
23M
8:19/mi
3:06:30
↑ 23↓ 630.6%
24M
7:59/mi
3:14:29
↓ 821.3%
40K· 24.85 mi
8:05/mi
3:21:24
↓ 200.3%
25.2M
8:48/mi
3:24:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:32:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:59
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:47:18
Pace8:11 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3424:437:5724:43
7:57
-
10K
6.21 mi11:42:2949:387:5924:55
8:01
+0:04
15K
9.32 mi12:07:191:14:287:5924:50
8:00
-0:01
20K
12.43 mi12:32:291:39:388:0125:10
8:06
+0:06
Half
13.11 mi12:37:501:44:598:005:21
7:50
-0:16
25K
15.53 mi12:57:262:04:358:0119:36
8:05
+0:15
30K
18.64 mi13:23:152:30:248:0425:49
8:19
+0:14
20M
20.00 mi13:34:312:41:408:0511:16
8:17
-0:02
21M
21.00 mi13:43:022:50:118:068:31
8:31
+0:14
35K
21.75 mi13:48:562:56:058:065:54
7:53
-0:38
23M
23.00 mi13:59:213:06:308:0710:25
8:19
+0:26
24M
24.00 mi14:07:203:14:298:067:59
7:59
-0:20
40K
24.85 mi14:14:153:21:248:066:55
8:05
+0:06
25.2M
25.20 mi14:17:173:24:268:073:02
8:48
+0:43
Finish
26.22 mi14:25:083:32:178:067:51
7:42
-1:06

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

7:42 /mi

Average Pace

8:06 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:44

95% of race

Time at Steady Pace

11:33

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:17:3424:437:5724:43
7:57
#16254
10K
6.21 mi11:42:2949:387:5924:55
8:01
#16412
15K
9.32 mi12:07:191:14:287:5924:50
8:00
#16243
20K
12.43 mi12:32:291:39:388:0125:10
8:06
#16072
Half
13.11 mi12:37:501:44:598:005:21
7:50
#15985
25K
15.53 mi12:57:262:04:358:0119:36
8:05
#15715
30K
18.64 mi13:23:152:30:248:0425:49
8:19
#15276
20M
20.00 mi13:34:312:41:408:0511:16
8:17
#15010
21M
21.00 mi13:43:022:50:118:068:31
8:31
#14698
35K
21.75 mi13:48:562:56:058:065:54
7:53
#14542
23M
23.00 mi13:59:213:06:308:0710:25
8:19
#14393
24M
24.00 mi14:07:203:14:298:067:59
7:59
#14234
40K
24.85 mi14:14:153:21:248:066:55
8:05
#14071
25.2M
25.20 mi14:17:173:24:268:073:02
8:48
#13994
Finish
26.22 mi14:25:083:32:178:067:51
7:42
#13831
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi162545299529916005(Top 56%)5144(Top 42%)5144(Top 395%)
10K6.21 mi3.10 mi16412-1585389-905389-9016640(Top 59%)5503(Top 45%)5503(Top 422%)
15K9.32 mi3.11 mi16243+1695276+1135276+11316005(Top 56%)5144(Top 42%)5144(Top 395%)
20K12.43 mi3.11 mi16072+1715195+815195+8115639(Top 55%)4994(Top 41%)4994(Top 383%)
Half13.11 mi0.68 mi15985+875138+575138+5714658(Top 52%)4425(Top 36%)4425(Top 340%)
25K15.53 mi2.42 mi15715+2705001+1375001+13714533(Top 51%)4498(Top 37%)4498(Top 345%)
30K18.64 mi3.11 mi15276+4394810+1914810+19113580(Top 48%)4137(Top 34%)4137(Top 317%)
20M20.00 mi1.36 mi15010+2664706+1044706+10412455(Top 44%)3674(Top 30%)3674(Top 282%)
21M21.00 mi1.00 mi14698+3124553+1534553+15310630(Top 37%)2933(Top 24%)2933(Top 225%)
35K21.75 mi0.75 mi14542+1564479+744479+7411533(Top 41%)3405(Top 28%)3405(Top 261%)
23M23.00 mi1.25 mi14393+1494434+454434+4512185(Top 43%)3842(Top 31%)3842(Top 295%)
24M24.00 mi1.00 mi14234+1594378+564378+5611172(Top 39%)3404(Top 28%)3404(Top 261%)
40K24.85 mi0.85 mi14071+1634314+644314+6410832(Top 38%)3341(Top 27%)3341(Top 256%)
25.2M25.20 mi0.35 mi13994+774284+304284+3010714(Top 38%)3370(Top 28%)3370(Top 259%)
Finish26.22 mi1.02 mi13831+1634226+584226+5810768(Top 38%)3362(Top 27%)3362(Top 258%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

16005

Females

5144

F50-54

5144

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16640

Females

5503

F50-54

5503

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

16005

Females

5144

F50-54

5144

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

15639

Females

4994

F50-54

4994

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14658

Females

4425

F50-54

4425

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14533

Females

4498

F50-54

4498

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13580

Females

4137

F50-54

4137

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12455

Females

3674

F50-54

3674

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10630

Females

2933

F50-54

2933

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11533

Females

3405

F50-54

3405

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

12185

Females

3842

F50-54

3842

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

11172

Females

3404

F50-54

3404

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10832

Females

3341

F50-54

3341

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10714

Females

3370

F50-54

3370

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10768

Females

3362

F50-54

3362

Passing Analysis

Category:
Athletes Passed
3258
Passed By
835
Net Change
+2423
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16254
5K → 10K234392-158#16254#16412
10K → 15K293124+169#16412#16243
15K → 20K291120+171#16243#16072
20K → Half969+87#16072#15985
Half → 25K30939+270#15985#15715
25K → 30K49960+439#15715#15276
30K → 20M28216+266#15276#15010
20M → 21M3131+312#15010#14698
21M → 35K16610+156#14698#14542
35K → 23M17627+149#14542#14393
23M → 24M1667+159#14393#14234
24M → 40K17411+163#14234#14071
40K → 25.2M825+77#14071#13994
25.2M → Finish17714+163#13994#13831
TOTALS3258835+2423
📊

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