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BOSTON MARATHON 2023

Jessica Klain

Bib: 18934•F

CO

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
26:35
Rank: #17960
Start → 5K
26:35 | 8:33/mi
10K· 6.21 mi
53:13
Rank: #18301 (-341)
5K → 10K
26:38 | 8:34/mi
15K· 9.32 mi
1:18:39
Rank: #17455 (+846)
10K → 15K
25:26 | 8:11/mi
20K· 12.43 mi
1:44:50
Rank: #17172 (+283)
15K → 20K
26:11 | 8:26/mi
Half· 13.11 mi
1:50:35
Rank: #17173 (-1)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:11:19
Rank: #17060 (+113)
Half → 25K
20:44 | 8:33/mi
30K· 18.64 mi
2:39:12
Rank: #17000 (+60)
25K → 30K
27:53 | 8:58/mi
20M
2:52:15
Rank: #17219 (-219)
30K → 20M
13:03 | 9:36/mi
21M
3:01:58
Rank: #17185 (+34)
20M → 21M
9:43 | 9:43/mi
35K· 21.75 mi
3:08:44
Rank: #17219 (-34)
21M → 35K
6:46 | 9:03/mi
23M
3:20:17
Rank: #17227 (-8)
35K → 23M
11:33 | 9:13/mi
24M
3:29:13
Rank: #17206 (+21)
23M → 24M
8:56 | 8:56/mi
40K· 24.85 mi
3:37:10
Rank: #17215 (-9)
24M → 40K
7:57 | 9:18/mi
25.2M
3:40:32
Rank: #17217 (-2)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:49:31
Rank: #17238 (-21)
25.2M → Finish
8:59 | 8:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:35
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time1:58:56
Pace9:04 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:1526:358:3326:35
8:33
-
10K
6.21 mi11:45:5353:138:3426:38
8:34
+0:01
15K
9.32 mi12:11:191:18:398:2625:26
8:11
-0:23
20K
12.43 mi12:37:301:44:508:2626:11
8:26
+0:15
Half
13.11 mi12:43:151:50:358:265:45
8:26
0:00
25K
15.53 mi13:03:592:11:198:2720:44
8:33
+0:07
30K
18.64 mi13:31:522:39:128:3227:53
8:58
+0:25
20M
20.00 mi13:44:552:52:158:3713:03
9:36
+0:38
21M
21.00 mi13:54:383:01:588:409:43
9:43
+0:07
35K
21.75 mi14:01:243:08:448:416:46
9:03
-0:40
23M
23.00 mi14:12:573:20:178:4211:33
9:13
+0:10
24M
24.00 mi14:21:533:29:138:438:56
8:56
-0:17
40K
24.85 mi14:29:503:37:108:447:57
9:18
+0:22
25.2M
25.20 mi14:33:123:40:328:453:22
9:46
+0:28
Finish
26.22 mi14:42:113:49:318:468:59
8:49
-0:57

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

8:11 /mi

Average Pace

8:46 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:07

77% of race

Time at Steady Pace

39:19

17% of race

Time at Slower Pace

13:05

6% of race

Average Pace: 8:45 /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 mi11:19:1526:358:3326:35
8:33
#17960
10K
6.21 mi11:45:5353:138:3426:38
8:34
#18301
15K
9.32 mi12:11:191:18:398:2625:26
8:11
#17455
20K
12.43 mi12:37:301:44:508:2626:11
8:26
#17172
Half
13.11 mi12:43:151:50:358:265:45
8:26
#17173
25K
15.53 mi13:03:592:11:198:2720:44
8:33
#17060
30K
18.64 mi13:31:522:39:128:3227:53
8:58
#17000
20M
20.00 mi13:44:552:52:158:3713:03
9:36
#17219
21M
21.00 mi13:54:383:01:588:409:43
9:43
#17185
35K
21.75 mi14:01:243:08:448:416:46
9:03
#17219
23M
23.00 mi14:12:573:20:178:4211:33
9:13
#17227
24M
24.00 mi14:21:533:29:138:438:56
8:56
#17206
40K
24.85 mi14:29:503:37:108:447:57
9:18
#17215
25.2M
25.20 mi14:33:123:40:328:453:22
9:46
#17217
Finish
26.22 mi14:42:113:49:318:468:59
8:49
#17238
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi179606534653415784(Top 59%)5162(Top 45%)5162(Top 106%)
10K6.21 mi3.10 mi18301-3416699-1656699-16518698(Top 70%)6903(Top 60%)6903(Top 141%)
15K9.32 mi3.11 mi17455+8466194+5056194+50515784(Top 59%)5162(Top 45%)5162(Top 106%)
20K12.43 mi3.11 mi17172+2836029+1656029+16516431(Top 62%)5609(Top 49%)5609(Top 115%)
Half13.11 mi0.68 mi17173-16030-16030-117398(Top 65%)6144(Top 54%)6144(Top 126%)
25K15.53 mi2.42 mi17060+1135981+495981+4916521(Top 62%)5740(Top 50%)5740(Top 118%)
30K18.64 mi3.11 mi17000+605964+175964+1717050(Top 64%)6095(Top 53%)6095(Top 125%)
20M20.00 mi1.36 mi17219-2196112-1486112-14819265(Top 72%)7443(Top 65%)7443(Top 152%)
21M21.00 mi1.00 mi17185+346103+96103+916951(Top 64%)6167(Top 54%)6167(Top 126%)
35K21.75 mi0.75 mi17219-346135-326135-3218124(Top 68%)6916(Top 61%)6916(Top 142%)
23M23.00 mi1.25 mi17227-86156-216156-2117216(Top 65%)6415(Top 56%)6415(Top 131%)
24M24.00 mi1.00 mi17206+216158-26158-216965(Top 64%)6344(Top 56%)6344(Top 130%)
40K24.85 mi0.85 mi17215-96180-226180-2217558(Top 66%)6723(Top 59%)6723(Top 138%)
25.2M25.20 mi0.35 mi17217-26189-96189-916471(Top 62%)6164(Top 54%)6164(Top 126%)
Finish26.22 mi1.02 mi17238-216206-176206-1717162(Top 64%)6476(Top 57%)6476(Top 133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15784

Females

5162

F18-39

5162

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18698

Females

6903

F18-39

6903

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15784

Females

5162

F18-39

5162

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16431

Females

5609

F18-39

5609

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

17398

Females

6144

F18-39

6144

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16521

Females

5740

F18-39

5740

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17050

Females

6095

F18-39

6095

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

19265

Females

7443

F18-39

7443

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

16951

Females

6167

F18-39

6167

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

18124

Females

6916

F18-39

6916

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

17216

Females

6415

F18-39

6415

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

16965

Females

6344

F18-39

6344

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17558

Females

6723

F18-39

6723

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16471

Females

6164

F18-39

6164

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

17162

Females

6476

F18-39

6476

Passing Analysis

Category:
Athletes Passed
2234
Passed By
1512
Net Change
+722
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17960
5K → 10K172513-341#17960#18301
10K → 15K86620+846#18301#17455
15K → 20K33047+283#17455#17172
20K → Half2526-1#17172#17173
Half → 25K17966+113#17173#17060
25K → 30K200140+60#17060#17000
30K → 20M30249-219#17000#17219
20M → 21M10975+34#17219#17185
21M → 35K3165-34#17185#17219
35K → 23M8088-8#17219#17227
23M → 24M7857+21#17227#17206
24M → 40K6473-9#17206#17215
40K → 25.2M1820-2#17215#17217
25.2M → Finish5273-21#17217#17238
TOTALS22341512+722
📊

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