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BOSTON MARATHON 2025

Emily Decocker

Bib: 13290•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Female)
#0 / 12228
Top 8%
Division (F18-39)
#0 / 5469
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:42
Rank: #7713
Start → 5K
21:42 | 6:59/mi
10K· 6.21 mi
43:11
Rank: #7522 (+191)
5K → 10K
21:29 | 6:55/mi
15K· 9.32 mi
1:04:27
Rank: #7202 (+320)
10K → 15K
21:16 | 6:51/mi
20K· 12.43 mi
1:25:54
Rank: #6914 (+288)
15K → 20K
21:27 | 6:54/mi
Half· 13.11 mi
1:30:31
Rank: #6859 (+55)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:47:41
Rank: #6812 (+47)
Half → 25K
17:10 | 7:05/mi
30K· 18.64 mi
2:11:24
Rank: #6992 (-180)
25K → 30K
23:43 | 7:38/mi
20M
2:21:45
Rank: #6988 (+4)
30K → 20M
10:21 | 7:37/mi
21M
2:30:10
Rank: #7068 (-80)
20M → 21M
8:25 | 8:25/mi
35K· 21.75 mi
2:35:37
Rank: #7044 (+24)
21M → 35K
5:27 | 7:17/mi
23M
2:45:15
Rank: #7012 (+32)
35K → 23M
9:38 | 7:42/mi
24M
2:52:40
Rank: #6966 (+46)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
2:59:25
Rank: #7000 (-34)
24M → 40K
6:45 | 7:54/mi
25.2M
3:02:11
Rank: #6971 (+29)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:09:31
Rank: #6918 (+53)
25.2M → Finish
7:20 | 7:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:31
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:39:00
Pace7:33 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5821:426:5921:42
6:59
-
10K
6.21 mi11:12:2743:116:5721:29
6:55
-0:04
15K
9.32 mi11:33:431:04:276:5521:16
6:51
-0:04
20K
12.43 mi11:55:101:25:546:5521:27
6:54
+0:03
Half
13.11 mi11:59:471:30:316:544:37
6:46
-0:08
25K
15.53 mi12:16:571:47:416:5617:10
7:05
+0:19
30K
18.64 mi12:40:402:11:247:0323:43
7:38
+0:33
20M
20.00 mi12:51:012:21:457:0510:21
7:37
-0:01
21M
21.00 mi12:59:262:30:107:098:25
8:25
+0:48
35K
21.75 mi13:04:532:35:377:095:27
7:17
-1:08
23M
23.00 mi13:14:312:45:157:119:38
7:42
+0:25
24M
24.00 mi13:21:562:52:407:127:25
7:25
-0:17
40K
24.85 mi13:28:412:59:257:136:45
7:54
+0:29
25.2M
25.20 mi13:31:273:02:117:142:46
8:01
+0:07
Finish
26.22 mi13:38:473:09:317:147:20
7:12
-0:49

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

6:46 /mi

Average Pace

7:14 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:31

48% of race

Time at Steady Pace

37:22

20% of race

Time at Slower Pace

1:01:38

33% of race

Average Pace: 7:14 /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 mi10:50:5821:426:5921:42
6:59
#7713
10K
6.21 mi11:12:2743:116:5721:29
6:55
#7522
15K
9.32 mi11:33:431:04:276:5521:16
6:51
#7202
20K
12.43 mi11:55:101:25:546:5521:27
6:54
#6914
Half
13.11 mi11:59:471:30:316:544:37
6:46
#6859
25K
15.53 mi12:16:571:47:416:5617:10
7:05
#6812
30K
18.64 mi12:40:402:11:247:0323:43
7:38
#6992
20M
20.00 mi12:51:012:21:457:0510:21
7:37
#6988
21M
21.00 mi12:59:262:30:107:098:25
8:25
#7068
35K
21.75 mi13:04:532:35:377:095:27
7:17
#7044
23M
23.00 mi13:14:312:45:157:119:38
7:42
#7012
24M
24.00 mi13:21:562:52:407:127:25
7:25
#6966
40K
24.85 mi13:28:412:59:257:136:45
7:54
#7000
25.2M
25.20 mi13:31:273:02:117:142:46
8:01
#6971
Finish
26.22 mi13:38:473:09:317:147:20
7:12
#6918
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi77138898896551(Top 23%)633(Top 5%)633(Top 12%)
10K6.21 mi3.10 mi7522+191835+54835+547365(Top 26%)798(Top 7%)798(Top 15%)
15K9.32 mi3.11 mi7202+320749+86749+866551(Top 23%)633(Top 5%)633(Top 12%)
20K12.43 mi3.11 mi6914+288685+64685+646248(Top 22%)613(Top 5%)613(Top 11%)
Half13.11 mi0.68 mi6859+55674+11674+115960(Top 21%)558(Top 5%)558(Top 10%)
25K15.53 mi2.42 mi6812+47689-15689-156866(Top 24%)826(Top 7%)826(Top 15%)
30K18.64 mi3.11 mi6992-180769-80769-808700(Top 31%)1689(Top 14%)1689(Top 31%)
20M20.00 mi1.36 mi6988+4804-35804-357811(Top 27%)1462(Top 12%)1462(Top 27%)
21M21.00 mi1.00 mi7068-80848-44848-449962(Top 35%)2585(Top 21%)2585(Top 47%)
35K21.75 mi0.75 mi7044+24862-14862-147162(Top 25%)1339(Top 11%)1339(Top 24%)
23M23.00 mi1.25 mi7012+32888-26888-267878(Top 28%)1766(Top 14%)1766(Top 32%)
24M24.00 mi1.00 mi6966+46910-22910-227156(Top 25%)1511(Top 12%)1511(Top 28%)
40K24.85 mi0.85 mi7000-34944-34944-349436(Top 33%)2637(Top 22%)2637(Top 48%)
25.2M25.20 mi0.35 mi6971+29943+1943+16124(Top 22%)1282(Top 10%)1282(Top 23%)
Finish26.22 mi1.02 mi6918+53959-16959-167037(Top 25%)1655(Top 14%)1655(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6551

Females

633

F18-39

633

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7365

Females

798

F18-39

798

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6551

Females

633

F18-39

633

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6248

Females

613

F18-39

613

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5960

Females

558

F18-39

558

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6866

Females

826

F18-39

826

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8700

Females

1689

F18-39

1689

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7811

Females

1462

F18-39

1462

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9962

Females

2585

F18-39

2585

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7162

Females

1339

F18-39

1339

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7878

Females

1766

F18-39

1766

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7156

Females

1511

F18-39

1511

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9436

Females

2637

F18-39

2637

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6124

Females

1282

F18-39

1282

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

7037

Females

1655

F18-39

1655

Passing Analysis

Category:
Athletes Passed
1888
Passed By
1093
Net Change
+795
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7713
5K → 10K296105+191#7713#7522
10K → 15K34727+320#7522#7202
15K → 20K31729+288#7202#6914
20K → Half638+55#6914#6859
Half → 25K14497+47#6859#6812
25K → 30K119299-180#6812#6992
30K → 20M10096+4#6992#6988
20M → 21M70150-80#6988#7068
21M → 35K5632+24#7068#7044
35K → 23M10371+32#7044#7012
23M → 24M9347+46#7012#6966
24M → 40K4680-34#6966#7000
40K → 25.2M3910+29#7000#6971
25.2M → Finish9542+53#6971#6918
TOTALS18881093+795
📊

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