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BOSTON MARATHON 2023

Julia Maddock Cummings

Bib: 13803•F

KS

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 45%
Gender (Female)
#0 / 11423
Top 27%
Division (F18-39)
#0 / 4884
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:49
Rank: #11174
Start → 5K
7:40/mi
23:49 split
10K· 6.21 mi
47:27
Rank: #11240 (-66)
5K → 10K
7:36/mi
23:38 split
15K· 9.32 mi
1:11:13
Rank: #11298 (-58)
10K → 15K
7:39/mi
23:46 split
20K· 12.43 mi
1:35:40
Rank: #11518 (-220)
15K → 20K
7:52/mi
24:27 split
Half· 13.11 mi
1:40:56
Rank: #11531 (-13)
20K → Half
7:43/mi
5:16 split
25K· 15.53 mi
2:00:29
Rank: #11779 (-248)
Half → 25K
8:04/mi
19:33 split
30K· 18.64 mi
2:26:06
Rank: #11914 (-135)
25K → 30K
8:15/mi
25:37 split
20M
2:37:11
Rank: #11855 (+59)
30K → 20M
8:09/mi
11:05 split
21M
2:45:43
Rank: #11793 (+62)
20M → 21M
8:32/mi
8:32 split
35K· 21.75 mi
2:51:42
Rank: #11811 (-18)
21M → 35K
8:00/mi
5:59 split
23M
3:02:09
Rank: #11811
35K → 23M
8:21/mi
10:27 split
24M
3:10:19
Rank: #11834 (-23)
23M → 24M
8:10/mi
8:10 split
40K· 24.85 mi
3:17:34
Rank: #11875 (-41)
24M → 40K
8:29/mi
7:15 split
25.2M
3:20:47
Rank: #11931 (-56)
40K → 25.2M
9:20/mi
3:13 split
Finish· 26.22 mi
3:29:13
Rank: #12018 (-87)
25.2M → Finish
8:17/mi
8:26 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:56
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:48:17
Pace8:16 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1223:497:4023:49
7:40
-
10K
6.21 mi11:15:5047:277:3823:38
7:36
-0:04
15K
9.32 mi11:39:361:11:137:3823:46
7:39
+0:03
20K
12.43 mi12:04:031:35:407:4224:27
7:52
+0:13
Half
13.11 mi12:09:191:40:567:425:16
7:43
-0:09
25K
15.53 mi12:28:522:00:297:4519:33
8:04
+0:21
30K
18.64 mi12:54:292:26:067:5025:37
8:15
+0:11
20M
20.00 mi13:05:342:37:117:5211:05
8:09
-0:06
21M
21.00 mi13:14:062:45:437:538:32
8:32
+0:23
35K
21.75 mi13:20:052:51:427:545:59
8:00
-0:32
23M
23.00 mi13:30:323:02:097:5510:27
8:21
+0:21
24M
24.00 mi13:38:423:10:197:568:10
8:10
-0:11
40K
24.85 mi13:45:573:17:347:577:15
8:29
+0:19
25.2M
25.20 mi13:49:103:20:477:583:13
9:20
+0:51
Finish
26.22 mi13:57:363:29:137:598:26
8:17
-1:03

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

7:36 /mi

Average Pace

7:59 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:56

48% of race

Time at Steady Pace

1:29:17

43% of race

Time at Slower Pace

19:00

9% of race

Average Pace: 7:59 /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 mi10:52:1223:497:4023:49
7:40
#11174
10K
6.21 mi11:15:5047:277:3823:38
7:36
#11240
15K
9.32 mi11:39:361:11:137:3823:46
7:39
#11298
20K
12.43 mi12:04:031:35:407:4224:27
7:52
#11518
Half
13.11 mi12:09:191:40:567:425:16
7:43
#11531
25K
15.53 mi12:28:522:00:297:4519:33
8:04
#11779
30K
18.64 mi12:54:292:26:067:5025:37
8:15
#11914
20M
20.00 mi13:05:342:37:117:5211:05
8:09
#11855
21M
21.00 mi13:14:062:45:437:538:32
8:32
#11793
35K
21.75 mi13:20:052:51:427:545:59
8:00
#11811
23M
23.00 mi13:30:323:02:097:5510:27
8:21
#11811
24M
24.00 mi13:38:423:10:197:568:10
8:10
#11834
40K
24.85 mi13:45:573:17:347:577:15
8:29
#11875
25.2M
25.20 mi13:49:103:20:477:583:13
9:20
#11931
Finish
26.22 mi13:57:363:29:137:598:26
8:17
#12018
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111742421242111435(Top 43%)2592(Top 23%)2592(Top 53%)
10K6.21 mi3.10 mi11240-662462-412462-4111405(Top 43%)2558(Top 22%)2558(Top 52%)
15K9.32 mi3.11 mi11298-582490-282490-2811435(Top 43%)2592(Top 23%)2592(Top 53%)
20K12.43 mi3.11 mi11518-2202632-1422632-14212352(Top 46%)3168(Top 28%)3168(Top 65%)
Half13.11 mi0.68 mi11531-132644-122644-1212105(Top 45%)2983(Top 26%)2983(Top 61%)
25K15.53 mi2.42 mi11779-2482801-1572801-15713249(Top 50%)3770(Top 33%)3770(Top 77%)
30K18.64 mi3.11 mi11914-1352934-1332934-13312648(Top 48%)3552(Top 31%)3552(Top 73%)
20M20.00 mi1.36 mi11855+592915+192915+1911412(Top 43%)2947(Top 26%)2947(Top 60%)
21M21.00 mi1.00 mi11793+622899+162899+1610701(Top 40%)2727(Top 24%)2727(Top 56%)
35K21.75 mi0.75 mi11811-182920-212920-2112134(Top 46%)3497(Top 31%)3497(Top 72%)
23M23.00 mi1.25 mi118112941-212941-2112229(Top 46%)3640(Top 32%)3640(Top 75%)
24M24.00 mi1.00 mi11834-232973-322973-3212397(Top 47%)3794(Top 33%)3794(Top 78%)
40K24.85 mi0.85 mi11875-413024-513024-5113212(Top 50%)4310(Top 38%)4310(Top 88%)
25.2M25.20 mi0.35 mi11931-563065-413065-4114333(Top 54%)4903(Top 43%)4903(Top 100%)
Finish26.22 mi1.02 mi12018-873136-713136-7113951(Top 52%)4702(Top 41%)4702(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

11435

Females

2592

F18-39

2592

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11405

Females

2558

F18-39

2558

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

11435

Females

2592

F18-39

2592

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12352

Females

3168

F18-39

3168

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12105

Females

2983

F18-39

2983

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13249

Females

3770

F18-39

3770

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12648

Females

3552

F18-39

3552

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11412

Females

2947

F18-39

2947

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10701

Females

2727

F18-39

2727

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12134

Females

3497

F18-39

3497

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12229

Females

3640

F18-39

3640

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12397

Females

3794

F18-39

3794

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13212

Females

4310

F18-39

4310

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14333

Females

4903

F18-39

4903

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13951

Females

4702

F18-39

4702

Passing Analysis

Category:
Athletes Passed
1328
Passed By
2172
Net Change
-844
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11174
5K → 10K270336-66#11174#11240
10K → 15K162220-58#11240#11298
15K → 20K100320-220#11298#11518
20K → Half3245-13#11518#11531
Half → 25K69317-248#11531#11779
25K → 30K151286-135#11779#11914
30K → 20M12061+59#11914#11855
20M → 21M12361+62#11855#11793
21M → 35K3654-18#11793#11811
35K → 23M97970#11811#11811
23M → 24M5982-23#11811#11834
24M → 40K5091-41#11834#11875
40K → 25.2M1470-56#11875#11931
25.2M → Finish45132-87#11931#12018
TOTALS13282172-844
📊

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