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BOSTON MARATHON 2023

Margaret Sullivan

Bib: 16155•F

SC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:10
Rank: #14713
Start → 5K
25:10 | 8:06/mi
10K· 6.21 mi
49:23
Rank: #13970 (+743)
5K → 10K
24:13 | 7:48/mi
15K· 9.32 mi
1:13:16
Rank: #13226 (+744)
10K → 15K
23:53 | 7:41/mi
20K· 12.43 mi
1:37:18
Rank: #12658 (+568)
15K → 20K
24:02 | 7:44/mi
Half· 13.11 mi
1:42:26
Rank: #12526 (+132)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
2:00:56
Rank: #12054 (+472)
Half → 25K
18:30 | 7:38/mi
30K· 18.64 mi
2:24:39
Rank: #11246 (+808)
25K → 30K
23:43 | 7:38/mi
20M
2:34:56
Rank: #10905 (+341)
30K → 20M
10:17 | 7:34/mi
21M
2:42:43
Rank: #10606 (+299)
20M → 21M
7:47 | 7:47/mi
35K· 21.75 mi
2:48:03
Rank: #10402 (+204)
21M → 35K
5:20 | 7:08/mi
23M
2:57:17
Rank: #10069 (+333)
35K → 23M
9:14 | 7:22/mi
24M
3:04:32
Rank: #9843 (+226)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
3:10:50
Rank: #9654 (+189)
24M → 40K
6:18 | 7:22/mi
25.2M
3:13:38
Rank: #9589 (+65)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:20:59
Rank: #9452 (+137)
25.2M → Finish
7:21 | 7:13/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:26
Pace7:49 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:38:33
Pace7:31 /mi
📊Negative Split: 3.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2125:108:0625:10
8:06
-
10K
6.21 mi11:41:3449:237:5724:13
7:48
-0:18
15K
9.32 mi12:05:271:13:167:5223:53
7:41
-0:07
20K
12.43 mi12:29:291:37:187:5024:02
7:44
+0:03
Half
13.11 mi12:34:371:42:267:495:08
7:31
-0:13
25K
15.53 mi12:53:072:00:567:4718:30
7:38
+0:07
30K
18.64 mi13:16:502:24:397:4623:43
7:38
0:00
20M
20.00 mi13:27:072:34:567:4510:17
7:34
-0:04
21M
21.00 mi13:34:542:42:437:457:47
7:47
+0:13
35K
21.75 mi13:40:142:48:037:445:20
7:08
-0:39
23M
23.00 mi13:49:282:57:177:429:14
7:22
+0:14
24M
24.00 mi13:56:433:04:327:417:15
7:15
-0:07
40K
24.85 mi14:03:013:10:507:416:18
7:22
+0:07
25.2M
25.20 mi14:05:493:13:387:412:48
8:07
+0:45
Finish
26.22 mi14:13:103:20:597:407:21
7:13
-0:54

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

7:08 /mi

Average Pace

7:40 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:01

86% of race

Time at Steady Pace

27:58

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi11:17:2125:108:0625:10
8:06
#14713
10K
6.21 mi11:41:3449:237:5724:13
7:48
#13970
15K
9.32 mi12:05:271:13:167:5223:53
7:41
#13226
20K
12.43 mi12:29:291:37:187:5024:02
7:44
#12658
Half
13.11 mi12:34:371:42:267:495:08
7:31
#12526
25K
15.53 mi12:53:072:00:567:4718:30
7:38
#12054
30K
18.64 mi13:16:502:24:397:4623:43
7:38
#11246
20M
20.00 mi13:27:072:34:567:4510:17
7:34
#10905
21M
21.00 mi13:34:542:42:437:457:47
7:47
#10606
35K
21.75 mi13:40:142:48:037:445:20
7:08
#10402
23M
23.00 mi13:49:282:57:177:429:14
7:22
#10069
24M
24.00 mi13:56:433:04:327:417:15
7:15
#9843
40K
24.85 mi14:03:013:10:507:416:18
7:22
#9654
25.2M
25.20 mi14:05:493:13:387:412:48
8:07
#9589
Finish
26.22 mi14:13:103:20:597:407:21
7:13
#9452
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147134458445811754(Top 44%)2757(Top 24%)2757(Top 56%)
10K6.21 mi3.10 mi13970+7434023+4354023+43513066(Top 49%)3465(Top 30%)3465(Top 71%)
15K9.32 mi3.11 mi13226+7443589+4343589+43411754(Top 44%)2757(Top 24%)2757(Top 56%)
20K12.43 mi3.11 mi12658+5683287+3023287+30211194(Top 42%)2505(Top 22%)2505(Top 51%)
Half13.11 mi0.68 mi12526+1323216+713216+7110446(Top 39%)2101(Top 18%)2101(Top 43%)
25K15.53 mi2.42 mi12054+4722973+2432973+2439791(Top 37%)1910(Top 17%)1910(Top 39%)
30K18.64 mi3.11 mi11246+8082557+4162557+4168208(Top 31%)1394(Top 12%)1394(Top 29%)
20M20.00 mi1.36 mi10905+3412383+1742383+1747314(Top 27%)1152(Top 10%)1152(Top 24%)
21M21.00 mi1.00 mi10606+2992252+1312252+1316118(Top 23%)845(Top 7%)845(Top 17%)
35K21.75 mi0.75 mi10402+2042170+822170+826147(Top 23%)818(Top 7%)818(Top 17%)
23M23.00 mi1.25 mi10069+3332029+1412029+1415760(Top 22%)743(Top 7%)743(Top 15%)
24M24.00 mi1.00 mi9843+2261954+751954+756094(Top 23%)942(Top 8%)942(Top 19%)
40K24.85 mi0.85 mi9654+1891887+671887+675936(Top 22%)967(Top 8%)967(Top 20%)
25.2M25.20 mi0.35 mi9589+651878+91878+97304(Top 27%)1548(Top 14%)1548(Top 32%)
Finish26.22 mi1.02 mi9452+1371841+371841+376557(Top 25%)1268(Top 11%)1268(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11754

Females

2757

F18-39

2757

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13066

Females

3465

F18-39

3465

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11754

Females

2757

F18-39

2757

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11194

Females

2505

F18-39

2505

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10446

Females

2101

F18-39

2101

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9791

Females

1910

F18-39

1910

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8208

Females

1394

F18-39

1394

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7314

Females

1152

F18-39

1152

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6118

Females

845

F18-39

845

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6147

Females

818

F18-39

818

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

5760

Females

743

F18-39

743

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6094

Females

942

F18-39

942

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5936

Females

967

F18-39

967

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7304

Females

1548

F18-39

1548

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6557

Females

1268

F18-39

1268

Passing Analysis

Category:
Athletes Passed
5409*
Passed By
148
Net Change
+5261
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14713
5K → 10K82481+743#14713#13970
10K → 15K76117+744#13970#13226
15K → 20K58113+568#13226#12658
20K → Half1331+132#12658#12526
Half → 25K4764+472#12526#12054
25K → 30K8091+808#12054#11246
30K → 20M342*1+341#11246#10905
20M → 21M3001+299#10905#10606
21M → 35K2040+204#10606#10402
35K → 23M3330+333#10402#10069
23M → 24M230*4+226#10069#9843
24M → 40K192*3+189#9843#9654
40K → 25.2M738+65#9654#9589
25.2M → Finish15114+137#9589#9452
TOTALS5409*148+5261

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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