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BOSTON MARATHON 2023

Jenny Karn

Bib: 19153•F

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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
25:48
Rank: #16202
Start → 5K
25:48 | 8:18/mi
10K· 6.21 mi
50:56
Rank: #15818 (+384)
5K → 10K
25:08 | 8:05/mi
15K· 9.32 mi
1:17:13
Rank: #16403 (-585)
10K → 15K
26:17 | 8:28/mi
20K· 12.43 mi
1:43:49
Rank: #16657 (-254)
15K → 20K
26:36 | 8:34/mi
Half· 13.11 mi
1:49:41
Rank: #16746 (-89)
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:11:36
Rank: #17169 (-423)
Half → 25K
21:55 | 9:02/mi
30K· 18.64 mi
2:42:51
Rank: #18194 (-1025)
25K → 30K
31:15 | 10:04/mi
20M
2:56:23
Rank: #18439 (-245)
30K → 20M
13:32 | 9:58/mi
21M
3:07:51
Rank: #18773 (-334)
20M → 21M
11:28 | 11:28/mi
35K· 21.75 mi
3:15:16
Rank: #18904 (-131)
21M → 35K
7:25 | 9:55/mi
23M
3:28:01
Rank: #19056 (-152)
35K → 23M
12:45 | 10:11/mi
24M
3:37:40
Rank: #19083 (-27)
23M → 24M
9:39 | 9:39/mi
40K· 24.85 mi
3:46:00
Rank: #19109 (-26)
24M → 40K
8:20 | 9:45/mi
25.2M
3:49:48
Rank: #19141 (-32)
40K → 25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
3:59:09
Rank: #19167 (-26)
25.2M → Finish
9:21 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:41
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:09:28
Pace9:53 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:5525:488:1825:48
8:18
-
10K
6.21 mi12:07:0350:568:1225:08
8:05
-0:13
15K
9.32 mi12:33:201:17:138:1726:17
8:28
+0:23
20K
12.43 mi12:59:561:43:498:2126:36
8:34
+0:06
Half
13.11 mi13:05:481:49:418:225:52
8:36
+0:02
25K
15.53 mi13:27:432:11:368:2821:55
9:02
+0:26
30K
18.64 mi13:58:582:42:518:4431:15
10:04
+1:02
20M
20.00 mi14:12:302:56:238:4913:32
9:58
-0:06
21M
21.00 mi14:23:583:07:518:5711:28
11:28
+1:30
35K
21.75 mi14:31:233:15:168:597:25
9:55
-1:33
23M
23.00 mi14:44:083:28:019:0312:45
10:11
+0:16
24M
24.00 mi14:53:473:37:409:049:39
9:39
-0:32
40K
24.85 mi15:02:073:46:009:068:20
9:45
+0:06
25.2M
25.20 mi15:05:553:49:489:073:48
11:01
+1:16
Finish
26.22 mi15:15:163:59:099:089:21
9:11
-1:50

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

8:05 /mi

Average Pace

9:08 /mi

Slowest Pace

11:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:36

55% of race

Time at Steady Pace

1:19:32

33% of race

Time at Slower Pace

28:01

12% of race

Average Pace: 9:07 /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 mi11:41:5525:488:1825:48
8:18
#16202
10K
6.21 mi12:07:0350:568:1225:08
8:05
#15818
15K
9.32 mi12:33:201:17:138:1726:17
8:28
#16403
20K
12.43 mi12:59:561:43:498:2126:36
8:34
#16657
Half
13.11 mi13:05:481:49:418:225:52
8:36
#16746
25K
15.53 mi13:27:432:11:368:2821:55
9:02
#17169
30K
18.64 mi13:58:582:42:518:4431:15
10:04
#18194
20M
20.00 mi14:12:302:56:238:4913:32
9:58
#18439
21M
21.00 mi14:23:583:07:518:5711:28
11:28
#18773
35K
21.75 mi14:31:233:15:168:597:25
9:55
#18904
23M
23.00 mi14:44:083:28:019:0312:45
10:11
#19056
24M
24.00 mi14:53:473:37:409:049:39
9:39
#19083
40K
24.85 mi15:02:073:46:009:068:20
9:45
#19109
25.2M
25.20 mi15:05:553:49:489:073:48
11:01
#19141
Finish
26.22 mi15:15:163:59:099:089:21
9:11
#19167
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi162025412541217557(Top 66%)6249(Top 55%)6249(Top 128%)
10K6.21 mi3.10 mi15818+3845172+2405172+24015460(Top 58%)4946(Top 43%)4946(Top 101%)
15K9.32 mi3.11 mi16403-5855531-3595531-35917557(Top 66%)6249(Top 55%)6249(Top 128%)
20K12.43 mi3.11 mi16657-2545713-1825713-18217264(Top 65%)6087(Top 53%)6087(Top 125%)
Half13.11 mi0.68 mi16746-895773-605773-6018382(Top 69%)6717(Top 59%)6717(Top 138%)
25K15.53 mi2.42 mi17169-4236045-2726045-27219167(Top 72%)7225(Top 63%)7225(Top 148%)
30K18.64 mi3.11 mi18194-10256686-6416686-64121180(Top 80%)8446(Top 74%)8446(Top 173%)
20M20.00 mi1.36 mi18439-2456833-1476833-14720371(Top 77%)8061(Top 71%)8061(Top 165%)
21M21.00 mi1.00 mi18773-3347039-2067039-20621825(Top 82%)8898(Top 78%)8898(Top 182%)
35K21.75 mi0.75 mi18904-1317122-837122-8321047(Top 79%)8509(Top 74%)8509(Top 174%)
23M23.00 mi1.25 mi19056-1527218-967218-9620521(Top 77%)8243(Top 72%)8243(Top 169%)
24M24.00 mi1.00 mi19083-277243-257243-2519734(Top 74%)7825(Top 69%)7825(Top 160%)
40K24.85 mi0.85 mi19109-267264-217264-2119206(Top 72%)7605(Top 67%)7605(Top 156%)
25.2M25.20 mi0.35 mi19141-327285-217285-2120522(Top 77%)8324(Top 73%)8324(Top 170%)
Finish26.22 mi1.02 mi19167-267304-197304-1918824(Top 71%)7346(Top 64%)7346(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

17557

Females

6249

F18-39

6249

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

15460

Females

4946

F18-39

4946

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

17557

Females

6249

F18-39

6249

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

17264

Females

6087

F18-39

6087

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18382

Females

6717

F18-39

6717

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19167

Females

7225

F18-39

7225

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

21180

Females

8446

F18-39

8446

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20371

Females

8061

F18-39

8061

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

21825

Females

8898

F18-39

8898

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

21047

Females

8509

F18-39

8509

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20521

Females

8243

F18-39

8243

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19734

Females

7825

F18-39

7825

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19206

Females

7605

F18-39

7605

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20522

Females

8324

F18-39

8324

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18824

Females

7346

F18-39

7346

Passing Analysis

Category:
Athletes Passed
1009
Passed By
3974
Net Change
-2965
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16202
5K → 10K533149+384#16202#15818
10K → 15K54639-585#15818#16403
15K → 20K99353-254#16403#16657
20K → Half897-89#16657#16746
Half → 25K44467-423#16746#17169
25K → 30K301055-1025#17169#18194
30K → 20M33278-245#18194#18439
20M → 21M13347-334#18439#18773
21M → 35K18149-131#18773#18904
35K → 23M39191-152#18904#19056
23M → 24M4673-27#19056#19083
24M → 40K3763-26#19083#19109
40K → 25.2M2052-32#19109#19141
25.2M → Finish3561-26#19141#19167
TOTALS10093974-2965
📊

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