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BOSTON MARATHON 2023

Katherine Leibel

Bib: 13666•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #11775
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
47:33
Rank: #11369 (+406)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:11:00
Rank: #11085 (+284)
10K → 15K
23:27 | 7:33/mi
20K· 12.43 mi
1:34:34
Rank: #10786 (+299)
15K → 20K
23:34 | 7:35/mi
Half· 13.11 mi
1:39:43
Rank: #10774 (+12)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:58:13
Rank: #10567 (+207)
Half → 25K
18:30 | 7:38/mi
30K· 18.64 mi
2:21:46
Rank: #10011 (+556)
25K → 30K
23:33 | 7:35/mi
20M
2:32:02
Rank: #9754 (+257)
30K → 20M
10:16 | 7:34/mi
21M
2:39:36
Rank: #9430 (+324)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:44:59
Rank: #9290 (+140)
21M → 35K
5:23 | 7:12/mi
23M
2:54:22
Rank: #9089 (+201)
35K → 23M
9:23 | 7:30/mi
24M
3:01:42
Rank: #8950 (+139)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
3:08:05
Rank: #8843 (+107)
24M → 40K
6:23 | 7:28/mi
25.2M
3:10:45
Rank: #8749 (+94)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:18:00
Rank: #8614 (+135)
25.2M → Finish
7:15 | 7:07/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:43
Pace7:36 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:38:17
Pace7:30 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5624:027:4424:02
7:44
-
10K
6.21 mi11:16:2747:337:3923:31
7:34
-0:10
15K
9.32 mi11:39:541:11:007:3723:27
7:33
-0:01
20K
12.43 mi12:03:281:34:347:3723:34
7:35
+0:02
Half
13.11 mi12:08:371:39:437:365:09
7:33
-0:02
25K
15.53 mi12:27:071:58:137:3718:30
7:38
+0:05
30K
18.64 mi12:50:402:21:467:3623:33
7:35
-0:03
20M
20.00 mi13:00:562:32:027:3610:16
7:34
-0:01
21M
21.00 mi13:08:302:39:367:367:34
7:34
0:00
35K
21.75 mi13:13:532:44:597:355:23
7:12
-0:22
23M
23.00 mi13:23:162:54:227:359:23
7:30
+0:18
24M
24.00 mi13:30:363:01:427:347:20
7:20
-0:10
40K
24.85 mi13:36:593:08:057:346:23
7:28
+0:08
25.2M
25.20 mi13:39:393:10:457:342:40
7:44
+0:16
Finish
26.22 mi13:46:543:18:007:337:15
7:07
-0:37

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

7:07 /mi

Average Pace

7:33 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:21

13% of race

Time at Steady Pace

2:51:39

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:52:5624:027:4424:02
7:44
#11775
10K
6.21 mi11:16:2747:337:3923:31
7:34
#11369
15K
9.32 mi11:39:541:11:007:3723:27
7:33
#11085
20K
12.43 mi12:03:281:34:347:3723:34
7:35
#10786
Half
13.11 mi12:08:371:39:437:365:09
7:33
#10774
25K
15.53 mi12:27:071:58:137:3718:30
7:38
#10567
30K
18.64 mi12:50:402:21:467:3623:33
7:35
#10011
20M
20.00 mi13:00:562:32:027:3610:16
7:34
#9754
21M
21.00 mi13:08:302:39:367:367:34
7:34
#9430
35K
21.75 mi13:13:532:44:597:355:23
7:12
#9290
23M
23.00 mi13:23:162:54:227:359:23
7:30
#9089
24M
24.00 mi13:30:363:01:427:347:20
7:20
#8950
40K
24.85 mi13:36:593:08:057:346:23
7:28
#8843
25.2M
25.20 mi13:39:393:10:457:342:40
7:44
#8749
Finish
26.22 mi13:46:543:18:007:337:15
7:07
#8614
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117752731273110565(Top 40%)2116(Top 19%)2116(Top 43%)
10K6.21 mi3.10 mi11369+4062528+2032528+20311044(Top 41%)2331(Top 20%)2331(Top 48%)
15K9.32 mi3.11 mi11085+2842378+1502378+15010565(Top 40%)2116(Top 19%)2116(Top 43%)
20K12.43 mi3.11 mi10786+2992241+1372241+1379982(Top 37%)1900(Top 17%)1900(Top 39%)
Half13.11 mi0.68 mi10774+122232+92232+910630(Top 40%)2168(Top 19%)2168(Top 44%)
25K15.53 mi2.42 mi10567+2072127+1052127+1059783(Top 37%)1902(Top 17%)1902(Top 39%)
30K18.64 mi3.11 mi10011+5561894+2331894+2337815(Top 29%)1230(Top 11%)1230(Top 25%)
20M20.00 mi1.36 mi9754+2571812+821812+827240(Top 27%)1129(Top 10%)1129(Top 23%)
21M21.00 mi1.00 mi9430+3241704+1081704+1084869(Top 18%)493(Top 4%)493(Top 10%)
35K21.75 mi0.75 mi9290+1401666+381666+386555(Top 25%)948(Top 8%)948(Top 19%)
23M23.00 mi1.25 mi9089+2011608+581608+586411(Top 24%)961(Top 8%)961(Top 20%)
24M24.00 mi1.00 mi8950+1391576+321576+326657(Top 25%)1139(Top 10%)1139(Top 23%)
40K24.85 mi0.85 mi8843+1071557+191557+196544(Top 25%)1180(Top 10%)1180(Top 24%)
25.2M25.20 mi0.35 mi8749+941529+281529+285147(Top 19%)792(Top 7%)792(Top 16%)
Finish26.22 mi1.02 mi8614+1351487+421487+425925(Top 22%)1044(Top 9%)1044(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10565

Females

2116

F18-39

2116

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11044

Females

2331

F18-39

2331

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10565

Females

2116

F18-39

2116

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9982

Females

1900

F18-39

1900

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10630

Females

2168

F18-39

2168

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9783

Females

1902

F18-39

1902

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7815

Females

1230

F18-39

1230

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7240

Females

1129

F18-39

1129

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4869

Females

493

F18-39

493

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6555

Females

948

F18-39

948

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6411

Females

961

F18-39

961

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6657

Females

1139

F18-39

1139

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6544

Females

1180

F18-39

1180

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5147

Females

792

F18-39

792

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5925

Females

1044

F18-39

1044

Passing Analysis

Category:
Athletes Passed
3510*
Passed By
349
Net Change
+3161
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11775
5K → 10K545139+406#11775#11369
10K → 15K35369+284#11369#11085
15K → 20K33839+299#11085#10786
20K → Half3220+12#10786#10774
Half → 25K23932+207#10774#10567
25K → 30K563*7+556#10567#10011
30K → 20M258*1+257#10011#9754
20M → 21M3240+324#9754#9430
21M → 35K1422+140#9430#9290
35K → 23M2109+201#9290#9089
23M → 24M15314+139#9089#8950
24M → 40K1125+107#8950#8843
40K → 25.2M962+94#8843#8749
25.2M → Finish14510+135#8749#8614
TOTALS3510*349+3161

* 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