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BOSTON MARATHON 2023

Katherine Defreitas

Bib: 30356•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
34:22
Rank: #25777
Start → 5K
34:22 | 11:04/mi
10K· 6.21 mi
1:07:31
Rank: #25389 (+388)
5K → 10K
33:09 | 10:40/mi
15K· 9.32 mi
1:40:35
Rank: #25124 (+265)
10K → 15K
33:04 | 10:39/mi
20K· 12.43 mi
2:15:10
Rank: #25035 (+89)
15K → 20K
34:35 | 11:08/mi
Half· 13.11 mi
2:22:49
Rank: #25045 (-10)
20K → Half
7:39 | 11:13/mi
25K· 15.53 mi
2:50:38
Rank: #24993 (+52)
Half → 25K
27:49 | 11:28/mi
30K· 18.64 mi
3:29:22
Rank: #25011 (-18)
25K → 30K
38:44 | 12:28/mi
20M
3:45:12
Rank: #24929 (+82)
30K → 20M
15:50 | 11:39/mi
21M
3:58:24
Rank: #24889 (+40)
20M → 21M
13:12 | 13:12/mi
35K· 21.75 mi
4:06:54
Rank: #24869 (+20)
21M → 35K
8:30 | 11:22/mi
23M
4:21:56
Rank: #24835 (+34)
35K → 23M
15:02 | 12:00/mi
24M
4:33:09
Rank: #24789 (+46)
23M → 24M
11:13 | 11:13/mi
40K· 24.85 mi
4:42:44
Rank: #24729 (+60)
24M → 40K
9:35 | 11:13/mi
25.2M
4:46:45
Rank: #24700 (+29)
40K → 25.2M
4:01 | 11:39/mi
Finish· 26.22 mi
4:56:14
Rank: #24586 (+114)
25.2M → Finish
9:29 | 9:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:22:49
Pace10:54 /mi
2nd Half
Distance13.11 mi
Time2:33:25
Pace11:42 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0934:2211:0434:22
11:04
-
10K
6.21 mi12:24:181:07:3110:5233:09
10:40
-0:24
15K
9.32 mi12:57:221:40:3510:4733:04
10:39
-0:01
20K
12.43 mi13:31:572:15:1010:5334:35
11:08
+0:29
Half
13.11 mi13:39:362:22:4910:547:39
11:13
+0:05
25K
15.53 mi14:07:252:50:3810:5927:49
11:28
+0:15
30K
18.64 mi14:46:093:29:2211:1438:44
12:28
+1:00
20M
20.00 mi15:01:593:45:1211:1615:50
11:39
-0:49
21M
21.00 mi15:15:113:58:2411:2113:12
13:12
+1:33
35K
21.75 mi15:23:414:06:5411:218:30
11:22
-1:50
23M
23.00 mi15:38:434:21:5611:2315:02
12:00
+0:38
24M
24.00 mi15:49:564:33:0911:2311:13
11:13
-0:47
40K
24.85 mi15:59:314:42:4411:239:35
11:13
0:00
25.2M
25.20 mi16:03:324:46:4511:234:01
11:39
+0:26
Finish
26.22 mi16:13:014:56:1411:189:29
9:18
-2:21

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

9:18 /mi

Average Pace

11:18 /mi

Slowest Pace

13:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:42

26% of race

Time at Steady Pace

2:13:43

45% of race

Time at Slower Pace

1:26:49

29% of race

Average Pace: 11:18 /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 mi11:51:0934:2211:0434:22
11:04
#25777
10K
6.21 mi12:24:181:07:3110:5233:09
10:40
#25389
15K
9.32 mi12:57:221:40:3510:4733:04
10:39
#25124
20K
12.43 mi13:31:572:15:1010:5334:35
11:08
#25035
Half
13.11 mi13:39:362:22:4910:547:39
11:13
#25045
25K
15.53 mi14:07:252:50:3810:5927:49
11:28
#24993
30K
18.64 mi14:46:093:29:2211:1438:44
12:28
#25011
20M
20.00 mi15:01:593:45:1211:1615:50
11:39
#24929
21M
21.00 mi15:15:113:58:2411:2113:12
13:12
#24889
35K
21.75 mi15:23:414:06:5411:218:30
11:22
#24869
23M
23.00 mi15:38:434:21:5611:2315:02
12:00
#24835
24M
24.00 mi15:49:564:33:0911:2311:13
11:13
#24789
40K
24.85 mi15:59:314:42:4411:239:35
11:13
#24729
25.2M
25.20 mi16:03:324:46:4511:234:01
11:39
#24700
Finish
26.22 mi16:13:014:56:1411:189:29
9:18
#24586
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25777109061090624711(Top 93%)10302(Top 90%)10302(Top 211%)
10K6.21 mi3.10 mi25389+38810659+24710659+24724970(Top 94%)10423(Top 91%)10423(Top 213%)
15K9.32 mi3.11 mi25124+26510509+15010509+15024711(Top 93%)10302(Top 90%)10302(Top 211%)
20K12.43 mi3.11 mi25035+8910475+3410475+3424786(Top 93%)10357(Top 91%)10357(Top 212%)
Half13.11 mi0.68 mi25045-1010479-410479-425219(Top 95%)10625(Top 93%)10625(Top 218%)
25K15.53 mi2.42 mi24993+5210460+1910460+1924628(Top 93%)10298(Top 90%)10298(Top 211%)
30K18.64 mi3.11 mi25011-1810493-3310493-3324965(Top 94%)10549(Top 92%)10549(Top 216%)
20M20.00 mi1.36 mi24929+8210453+4010453+4023766(Top 89%)9941(Top 87%)9941(Top 204%)
21M21.00 mi1.00 mi24889+4010443+1010443+1024304(Top 91%)10249(Top 90%)10249(Top 210%)
35K21.75 mi0.75 mi24869+2010441+210441+223916(Top 90%)10090(Top 88%)10090(Top 207%)
23M23.00 mi1.25 mi24835+3410425+1610425+1624023(Top 90%)10142(Top 89%)10142(Top 208%)
24M24.00 mi1.00 mi24789+4610411+1410411+1423444(Top 88%)9872(Top 86%)9872(Top 202%)
40K24.85 mi0.85 mi24729+6010382+2910382+2922765(Top 86%)9534(Top 83%)9534(Top 195%)
25.2M25.20 mi0.35 mi24700+2910367+1510367+1521906(Top 82%)9090(Top 80%)9090(Top 186%)
Finish26.22 mi1.02 mi24586+11410309+5810309+5819433(Top 73%)7702(Top 67%)7702(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

24711

Females

10302

F18-39

10302

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

24970

Females

10423

F18-39

10423

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

24711

Females

10302

F18-39

10302

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

24786

Females

10357

F18-39

10357

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25219

Females

10625

F18-39

10625

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

24628

Females

10298

F18-39

10298

25K→30K

15.5 - 18.6 mi

Top 94%
×9stories
+181ft-148ft

Overall

24965

Females

10549

F18-39

10549

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23766

Females

9941

F18-39

9941

20M→21M

20.0 - 21.0 mi

Top 91%
×8stories
+106ft-24ft

Overall

24304

Females

10249

F18-39

10249

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

23916

Females

10090

F18-39

10090

35K→23M

21.8 - 23.0 mi

Top 90%
×5stories
+23ft-63ft

Overall

24023

Females

10142

F18-39

10142

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23444

Females

9872

F18-39

9872

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22765

Females

9534

F18-39

9534

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21906

Females

9090

F18-39

9090

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19433

Females

7702

F18-39

7702

Passing Analysis

Category:
Athletes Passed
1529
Passed By
338
Net Change
+1191
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25777
5K → 10K41123+388#25777#25389
10K → 15K27611+265#25389#25124
15K → 20K14657+89#25124#25035
20K → Half1727-10#25035#25045
Half → 25K9644+52#25045#24993
25K → 30K83101-18#24993#25011
30K → 20M908+82#25011#24929
20M → 21M6020+40#24929#24889
21M → 35K3616+20#24889#24869
35K → 23M5218+34#24869#24835
23M → 24M526+46#24835#24789
24M → 40K644+60#24789#24729
40K → 25.2M323+29#24729#24700
25.2M → Finish1140+114#24700#24586
TOTALS1529338+1191
📊

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