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BOSTON MARATHON 2023

Margaret Leibovic

Bib: 17857•F

ON

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0:00
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:52
Rank: #11291
Start → 5K
23:52 | 7:41/mi
10K· 6.21 mi
47:08
Rank: #10785 (+506)
5K → 10K
23:16 | 7:29/mi
15K· 9.32 mi
1:10:05
Rank: #10232 (+553)
10K → 15K
22:57 | 7:23/mi
20K· 12.43 mi
1:33:24
Rank: #9973 (+259)
15K → 20K
23:19 | 7:30/mi
Half· 13.11 mi
1:38:26
Rank: #9924 (+49)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:44
Rank: #9776 (+148)
Half → 25K
18:18 | 7:33/mi
30K· 18.64 mi
2:20:05
Rank: #9267 (+509)
25K → 30K
23:21 | 7:31/mi
20M
2:30:20
Rank: #9074 (+193)
30K → 20M
10:15 | 7:33/mi
21M
2:38:12
Rank: #8915 (+159)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:43:43
Rank: #8847 (+68)
21M → 35K
5:31 | 7:22/mi
23M
2:53:06
Rank: #8674 (+173)
35K → 23M
9:23 | 7:30/mi
24M
3:00:25
Rank: #8537 (+137)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
3:06:42
Rank: #8397 (+140)
24M → 40K
6:17 | 7:21/mi
25.2M
3:09:21
Rank: #8310 (+87)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:16:37
Rank: #8190 (+120)
25.2M → Finish
7:16 | 7:08/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:38:26
Pace7:31 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:11
Pace7:29 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2723:527:4123:52
7:41
-
10K
6.21 mi11:37:4347:087:3523:16
7:29
-0:12
15K
9.32 mi12:00:401:10:057:3122:57
7:23
-0:06
20K
12.43 mi12:23:591:33:247:3123:19
7:30
+0:07
Half
13.11 mi12:29:011:38:267:315:02
7:23
-0:07
25K
15.53 mi12:47:191:56:447:3118:18
7:33
+0:10
30K
18.64 mi13:10:402:20:057:3123:21
7:31
-0:02
20M
20.00 mi13:20:552:30:207:3110:15
7:33
+0:02
21M
21.00 mi13:28:472:38:127:327:52
7:52
+0:19
35K
21.75 mi13:34:182:43:437:325:31
7:22
-0:30
23M
23.00 mi13:43:412:53:067:329:23
7:30
+0:08
24M
24.00 mi13:51:003:00:257:317:19
7:19
-0:11
40K
24.85 mi13:57:173:06:427:316:17
7:21
+0:02
25.2M
25.20 mi13:59:563:09:217:312:39
7:41
+0:20
Finish
26.22 mi14:07:123:16:377:307:16
7:08
-0:33

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

7:30 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:45

96% of race

Time at Steady Pace

7:52

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /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 mi11:14:2723:527:4123:52
7:41
#11291
10K
6.21 mi11:37:4347:087:3523:16
7:29
#10785
15K
9.32 mi12:00:401:10:057:3122:57
7:23
#10232
20K
12.43 mi12:23:591:33:247:3123:19
7:30
#9973
Half
13.11 mi12:29:011:38:267:315:02
7:23
#9924
25K
15.53 mi12:47:191:56:447:3118:18
7:33
#9776
30K
18.64 mi13:10:402:20:057:3123:21
7:31
#9267
20M
20.00 mi13:20:552:30:207:3110:15
7:33
#9074
21M
21.00 mi13:28:472:38:127:327:52
7:52
#8915
35K
21.75 mi13:34:182:43:437:325:31
7:22
#8847
23M
23.00 mi13:43:412:53:067:329:23
7:30
#8674
24M
24.00 mi13:51:003:00:257:317:19
7:19
#8537
40K
24.85 mi13:57:173:06:427:316:17
7:21
#8397
25.2M
25.20 mi13:59:563:09:217:312:39
7:41
#8310
Finish
26.22 mi14:07:123:16:377:307:16
7:08
#8190
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11291248024809239(Top 35%)1534(Top 13%)1534(Top 31%)
10K6.21 mi3.10 mi10785+5062216+2642216+26410367(Top 39%)1983(Top 17%)1983(Top 41%)
15K9.32 mi3.11 mi10232+5531926+2901926+2909239(Top 35%)1534(Top 13%)1534(Top 31%)
20K12.43 mi3.11 mi9973+2591823+1031823+1039352(Top 35%)1619(Top 14%)1619(Top 33%)
Half13.11 mi0.68 mi9924+491806+171806+179279(Top 35%)1571(Top 14%)1571(Top 32%)
25K15.53 mi2.42 mi9776+1481752+541752+549141(Top 34%)1606(Top 14%)1606(Top 33%)
30K18.64 mi3.11 mi9267+5091592+1601592+1607338(Top 28%)1050(Top 9%)1050(Top 21%)
20M20.00 mi1.36 mi9074+1931537+551537+557115(Top 27%)1065(Top 9%)1065(Top 22%)
21M21.00 mi1.00 mi8915+1591492+451492+456578(Top 25%)975(Top 9%)975(Top 20%)
35K21.75 mi0.75 mi8847+681476+161476+167676(Top 29%)1370(Top 12%)1370(Top 28%)
23M23.00 mi1.25 mi8674+1731437+391437+396409(Top 24%)959(Top 8%)959(Top 20%)
24M24.00 mi1.00 mi8537+1371403+341403+346520(Top 24%)1081(Top 9%)1081(Top 22%)
40K24.85 mi0.85 mi8397+1401373+301373+305795(Top 22%)912(Top 8%)912(Top 19%)
25.2M25.20 mi0.35 mi8310+871348+251348+254891(Top 18%)698(Top 6%)698(Top 14%)
Finish26.22 mi1.02 mi8190+1201327+211327+216023(Top 23%)1070(Top 9%)1070(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9239

Females

1534

F18-39

1534

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10367

Females

1983

F18-39

1983

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9239

Females

1534

F18-39

1534

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9352

Females

1619

F18-39

1619

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9279

Females

1571

F18-39

1571

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9141

Females

1606

F18-39

1606

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7338

Females

1050

F18-39

1050

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7115

Females

1065

F18-39

1065

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6578

Females

975

F18-39

975

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7676

Females

1370

F18-39

1370

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6409

Females

959

F18-39

959

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6520

Females

1081

F18-39

1081

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5795

Females

912

F18-39

912

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4891

Females

698

F18-39

698

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6023

Females

1070

F18-39

1070

Passing Analysis

Category:
Athletes Passed
3424*
Passed By
323
Net Change
+3101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11291
5K → 10K625119+506#11291#10785
10K → 15K58128+553#10785#10232
15K → 20K311*52+259#10232#9973
20K → Half523+49#9973#9924
Half → 25K19244+148#9924#9776
25K → 30K519*10+509#9776#9267
30K → 20M1985+193#9267#9074
20M → 21M16910+159#9074#8915
21M → 35K8113+68#8915#8847
35K → 23M1796+173#8847#8674
23M → 24M15013+137#8674#8537
24M → 40K1488+140#8537#8397
40K → 25.2M870+87#8397#8310
25.2M → Finish13212+120#8310#8190
TOTALS3424*323+3101

* 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