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BOSTON MARATHON 2023

Madeline Decerbo

Bib: 30882•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:50
Rank: #16254
Start → 5K
8:19/mi
25:50 split
10K· 6.21 mi
50:50
Rank: #15685 (+569)
5K → 10K
8:03/mi
25:00 split
15K· 9.32 mi
1:16:05
Rank: #15567 (+118)
10K → 15K
8:08/mi
25:15 split
20K· 12.43 mi
1:41:10
Rank: #15175 (+392)
15K → 20K
8:04/mi
25:05 split
Half· 13.11 mi
1:46:37
Rank: #15121 (+54)
20K → Half
7:59/mi
5:27 split
25K· 15.53 mi
2:06:09
Rank: #14782 (+339)
Half → 25K
8:03/mi
19:32 split
30K· 18.64 mi
2:31:10
Rank: #14172 (+610)
25K → 30K
8:03/mi
25:01 split
20M
2:41:28
Rank: #13619 (+553)
30K → 20M
7:35/mi
10:18 split
21M
2:49:30
Rank: #13218 (+401)
20M → 21M
8:02/mi
8:02 split
35K· 21.75 mi
2:54:59
Rank: #12983 (+235)
21M → 35K
7:20/mi
5:29 split
23M
3:04:09
Rank: #12489 (+494)
35K → 23M
7:19/mi
9:10 split
24M
3:11:20
Rank: #12185 (+304)
23M → 24M
7:11/mi
7:11 split
40K· 24.85 mi
3:17:28
Rank: #11838 (+347)
24M → 40K
7:10/mi
6:08 split
25.2M
3:20:08
Rank: #11717 (+121)
40K → 25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
3:27:18
Rank: #11403 (+314)
25.2M → Finish
7:02/mi
7:10 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:46:37
Pace8:08 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:40:41
Pace7:41 /mi
📊Negative Split: 5.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0325:508:1925:50
8:19
-
10K
6.21 mi12:09:0350:508:1125:00
8:03
-0:16
15K
9.32 mi12:34:181:16:058:1025:15
8:08
+0:05
20K
12.43 mi12:59:231:41:108:0825:05
8:04
-0:04
Half
13.11 mi13:04:501:46:378:085:27
7:59
-0:05
25K
15.53 mi13:24:222:06:098:0719:32
8:03
+0:04
30K
18.64 mi13:49:232:31:108:0725:01
8:03
0:00
20M
20.00 mi13:59:412:41:288:0410:18
7:35
-0:28
21M
21.00 mi14:07:432:49:308:048:02
8:02
+0:27
35K
21.75 mi14:13:122:54:598:035:29
7:20
-0:42
23M
23.00 mi14:22:223:04:098:009:10
7:19
-0:01
24M
24.00 mi14:29:333:11:207:587:11
7:11
-0:08
40K
24.85 mi14:35:413:17:287:576:08
7:10
-0:01
25.2M
25.20 mi14:38:213:20:087:572:40
7:44
+0:34
Finish
26.22 mi14:45:313:27:187:557:10
7:02
-0:42

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

7:02 /mi

Average Pace

7:55 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:06

23% of race

Time at Steady Pace

2:13:22

64% of race

Time at Slower Pace

25:50

12% of race

Average Pace: 7:54 /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 mi11:44:0325:508:1925:50
8:19
#16254
10K
6.21 mi12:09:0350:508:1125:00
8:03
#15685
15K
9.32 mi12:34:181:16:058:1025:15
8:08
#15567
20K
12.43 mi12:59:231:41:108:0825:05
8:04
#15175
Half
13.11 mi13:04:501:46:378:085:27
7:59
#15121
25K
15.53 mi13:24:222:06:098:0719:32
8:03
#14782
30K
18.64 mi13:49:232:31:108:0725:01
8:03
#14172
20M
20.00 mi13:59:412:41:288:0410:18
7:35
#13619
21M
21.00 mi14:07:432:49:308:048:02
8:02
#13218
35K
21.75 mi14:13:122:54:598:035:29
7:20
#12983
23M
23.00 mi14:22:223:04:098:009:10
7:19
#12489
24M
24.00 mi14:29:333:11:207:587:11
7:11
#12185
40K
24.85 mi14:35:413:17:287:576:08
7:10
#11838
25.2M
25.20 mi14:38:213:20:087:572:40
7:44
#11717
Finish
26.22 mi14:45:313:27:187:557:10
7:02
#11403
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi162545435543515341(Top 58%)4870(Top 43%)4870(Top 100%)
10K6.21 mi3.10 mi15685+5695082+3535082+35315142(Top 57%)4750(Top 42%)4750(Top 97%)
15K9.32 mi3.11 mi15567+1185017+655017+6515341(Top 58%)4870(Top 43%)4870(Top 100%)
20K12.43 mi3.11 mi15175+3924792+2254792+22514047(Top 53%)4129(Top 36%)4129(Top 85%)
Half13.11 mi0.68 mi15121+544760+324760+3214268(Top 54%)4212(Top 37%)4212(Top 86%)
25K15.53 mi2.42 mi14782+3394573+1874573+18713196(Top 50%)3739(Top 33%)3739(Top 77%)
30K18.64 mi3.11 mi14172+6104244+3294244+32911328(Top 43%)2803(Top 25%)2803(Top 57%)
20M20.00 mi1.36 mi13619+5533929+3153929+3157394(Top 28%)1187(Top 10%)1187(Top 24%)
21M21.00 mi1.00 mi13218+4013701+2283701+2287598(Top 29%)1364(Top 12%)1364(Top 28%)
35K21.75 mi0.75 mi12983+2353597+1043597+1047410(Top 28%)1285(Top 11%)1285(Top 26%)
23M23.00 mi1.25 mi12489+4943322+2753322+2755459(Top 21%)658(Top 6%)658(Top 13%)
24M24.00 mi1.00 mi12185+3043180+1423180+1425707(Top 21%)803(Top 7%)803(Top 16%)
40K24.85 mi0.85 mi11838+3473001+1793001+1794793(Top 18%)597(Top 5%)597(Top 12%)
25.2M25.20 mi0.35 mi11717+1212942+592942+595170(Top 19%)815(Top 7%)815(Top 17%)
Finish26.22 mi1.02 mi11403+3142798+1442798+1445453(Top 20%)900(Top 8%)900(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

15341

Females

4870

F18-39

4870

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15142

Females

4750

F18-39

4750

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

15341

Females

4870

F18-39

4870

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

14047

Females

4129

F18-39

4129

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

14268

Females

4212

F18-39

4212

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

13196

Females

3739

F18-39

3739

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11328

Females

2803

F18-39

2803

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7394

Females

1187

F18-39

1187

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7598

Females

1364

F18-39

1364

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7410

Females

1285

F18-39

1285

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5459

Females

658

F18-39

658

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5707

Females

803

F18-39

803

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4793

Females

597

F18-39

597

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5170

Females

815

F18-39

815

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5453

Females

900

F18-39

900

Passing Analysis

Category:
Athletes Passed
5151
Passed By
300
Net Change
+4851
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16254
5K → 10K675106+569#16254#15685
10K → 15K248130+118#15685#15567
15K → 20K42230+392#15567#15175
20K → Half7420+54#15175#15121
Half → 25K3478+339#15121#14782
25K → 30K6144+610#14782#14172
30K → 20M5530+553#14172#13619
20M → 21M4010+401#13619#13218
21M → 35K2350+235#13218#12983
35K → 23M4940+494#12983#12489
23M → 24M3040+304#12489#12185
24M → 40K3470+347#12185#11838
40K → 25.2M1210+121#11838#11717
25.2M → Finish3162+314#11717#11403
TOTALS5151300+4851
📊

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