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BOSTON MARATHON 2023

Caroline Defrank

Bib: 8070•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 28%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:40
Rank: #13578
Start → 5K
24:40 | 7:56/mi
10K· 6.21 mi
48:36
Rank: #12895 (+683)
5K → 10K
23:56 | 7:42/mi
15K· 9.32 mi
1:12:39
Rank: #12636 (+259)
10K → 15K
24:03 | 7:44/mi
20K· 12.43 mi
1:36:24
Rank: #12023 (+613)
15K → 20K
23:45 | 7:39/mi
Half· 13.11 mi
1:41:26
Rank: #11871 (+152)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
2:00:03
Rank: #11517 (+354)
Half → 25K
18:37 | 7:41/mi
30K· 18.64 mi
2:23:56
Rank: #10931 (+586)
25K → 30K
23:53 | 7:41/mi
20M
2:34:18
Rank: #10685 (+246)
30K → 20M
10:22 | 7:38/mi
21M
2:42:12
Rank: #10417 (+268)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:47:44
Rank: #10300 (+117)
21M → 35K
5:32 | 7:24/mi
23M
2:57:08
Rank: #10013 (+287)
35K → 23M
9:24 | 7:30/mi
24M
3:04:27
Rank: #9819 (+194)
23M → 24M
7:19 | 7:19/mi
40K· 24.85 mi
3:10:45
Rank: #9624 (+195)
24M → 40K
6:18 | 7:22/mi
25.2M
3:13:25
Rank: #9517 (+107)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:20:31
Rank: #9335 (+182)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:26
Pace7:44 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:05
Pace7:34 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4824:407:5624:40
7:56
-
10K
6.21 mi11:18:4448:367:4923:56
7:42
-0:14
15K
9.32 mi11:42:471:12:397:4824:03
7:44
+0:02
20K
12.43 mi12:06:321:36:247:4523:45
7:39
-0:05
Half
13.11 mi12:11:341:41:267:445:02
7:23
-0:16
25K
15.53 mi12:30:112:00:037:4418:37
7:41
+0:18
30K
18.64 mi12:54:042:23:567:4323:53
7:41
0:00
20M
20.00 mi13:04:262:34:187:4310:22
7:38
-0:03
21M
21.00 mi13:12:202:42:127:437:54
7:54
+0:16
35K
21.75 mi13:17:522:47:447:435:32
7:24
-0:30
23M
23.00 mi13:27:162:57:087:429:24
7:30
+0:06
24M
24.00 mi13:34:353:04:277:417:19
7:19
-0:11
40K
24.85 mi13:40:533:10:457:406:18
7:22
+0:03
25.2M
25.20 mi13:43:333:13:257:412:40
7:44
+0:22
Finish
26.22 mi13:50:393:20:317:397:06
6:58
-0:46

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

6:58 /mi

Average Pace

7:39 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:48

37% of race

Time at Steady Pace

2:05:43

63% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:54:4824:407:5624:40
7:56
#13578
10K
6.21 mi11:18:4448:367:4923:56
7:42
#12895
15K
9.32 mi11:42:471:12:397:4824:03
7:44
#12636
20K
12.43 mi12:06:321:36:247:4523:45
7:39
#12023
Half
13.11 mi12:11:341:41:267:445:02
7:23
#11871
25K
15.53 mi12:30:112:00:037:4418:37
7:41
#11517
30K
18.64 mi12:54:042:23:567:4323:53
7:41
#10931
20M
20.00 mi13:04:262:34:187:4310:22
7:38
#10685
21M
21.00 mi13:12:202:42:127:437:54
7:54
#10417
35K
21.75 mi13:17:522:47:447:435:32
7:24
#10300
23M
23.00 mi13:27:162:57:087:429:24
7:30
#10013
24M
24.00 mi13:34:353:04:277:417:19
7:19
#9819
40K
24.85 mi13:40:533:10:457:406:18
7:22
#9624
25.2M
25.20 mi13:43:333:13:257:412:40
7:44
#9517
Finish
26.22 mi13:50:393:20:317:397:06
6:58
#9335
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135783761376112206(Top 46%)3012(Top 26%)3012(Top 62%)
10K6.21 mi3.10 mi12895+6833376+3853376+38512267(Top 46%)3015(Top 26%)3015(Top 62%)
15K9.32 mi3.11 mi12636+2593251+1253251+12512206(Top 46%)3012(Top 26%)3012(Top 62%)
20K12.43 mi3.11 mi12023+6132924+3272924+32710467(Top 39%)2125(Top 19%)2125(Top 44%)
Half13.11 mi0.68 mi11871+1522838+862838+869318(Top 35%)1610(Top 14%)1610(Top 33%)
25K15.53 mi2.42 mi11517+3542647+1912647+19110143(Top 38%)2055(Top 18%)2055(Top 42%)
30K18.64 mi3.11 mi10931+5862362+2852362+2858564(Top 32%)1539(Top 13%)1539(Top 32%)
20M20.00 mi1.36 mi10685+2462275+872275+877715(Top 29%)1303(Top 11%)1303(Top 27%)
21M21.00 mi1.00 mi10417+2682156+1192156+1196770(Top 25%)1051(Top 9%)1051(Top 22%)
35K21.75 mi0.75 mi10300+1172113+432113+437825(Top 29%)1433(Top 13%)1433(Top 29%)
23M23.00 mi1.25 mi10013+2871997+1161997+1166493(Top 24%)994(Top 9%)994(Top 20%)
24M24.00 mi1.00 mi9819+1941946+511946+516534(Top 25%)1095(Top 10%)1095(Top 22%)
40K24.85 mi0.85 mi9624+1951877+691877+695935(Top 22%)966(Top 8%)966(Top 20%)
25.2M25.20 mi0.35 mi9517+1071845+321845+325157(Top 19%)802(Top 7%)802(Top 16%)
Finish26.22 mi1.02 mi9335+1821793+521793+525060(Top 19%)758(Top 7%)758(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

12206

Females

3012

F18-39

3012

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

12267

Females

3015

F18-39

3015

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

12206

Females

3012

F18-39

3012

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10467

Females

2125

F18-39

2125

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9318

Females

1610

F18-39

1610

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10143

Females

2055

F18-39

2055

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8564

Females

1539

F18-39

1539

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

7715

Females

1303

F18-39

1303

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6770

Females

1051

F18-39

1051

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7825

Females

1433

F18-39

1433

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6493

Females

994

F18-39

994

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6534

Females

1095

F18-39

1095

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5935

Females

966

F18-39

966

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5157

Females

802

F18-39

802

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5060

Females

758

F18-39

758

Passing Analysis

Category:
Athletes Passed
4495*
Passed By
252
Net Change
+4243
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13578
5K → 10K77895+683#13578#12895
10K → 15K362103+259#12895#12636
15K → 20K62310+613#12636#12023
20K → Half1531+152#12023#11871
Half → 25K36410+354#11871#11517
25K → 30K5959+586#11517#10931
30K → 20M247*1+246#10931#10685
20M → 21M2691+268#10685#10417
21M → 35K1225+117#10417#10300
35K → 23M288*1+287#10300#10013
23M → 24M200*6+194#10013#9819
24M → 40K196*1+195#9819#9624
40K → 25.2M1103+107#9624#9517
25.2M → Finish1886+182#9517#9335
TOTALS4495*252+4243

* 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