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BOSTON MARATHON 2023

Jocelyn Williams

Bib: 12052•F

KY

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
25:53
Rank: #16373
Start → 5K
8:20/mi
25:53 split
10K· 6.21 mi
52:09
Rank: #17169 (-796)
5K → 10K
8:27/mi
26:16 split
15K· 9.32 mi
1:18:29
Rank: #17331 (-162)
10K → 15K
8:29/mi
26:20 split
20K· 12.43 mi
1:44:08
Rank: #16794 (+537)
15K → 20K
8:15/mi
25:39 split
Half· 13.11 mi
1:49:47
Rank: #16792 (+2)
20K → Half
8:17/mi
5:39 split
25K· 15.53 mi
2:10:27
Rank: #16722 (+70)
Half → 25K
8:31/mi
20:40 split
30K· 18.64 mi
2:38:21
Rank: #16745 (-23)
25K → 30K
8:59/mi
27:54 split
20M
2:50:45
Rank: #16762 (-17)
30K → 20M
9:07/mi
12:24 split
21M
3:00:27
Rank: #16758 (+4)
20M → 21M
9:42/mi
9:42 split
35K· 21.75 mi
3:07:02
Rank: #16747 (+11)
21M → 35K
8:48/mi
6:35 split
23M
3:18:31
Rank: #16779 (-32)
35K → 23M
9:10/mi
11:29 split
24M
3:27:36
Rank: #16824 (-45)
23M → 24M
9:05/mi
9:05 split
40K· 24.85 mi
3:35:34
Rank: #16836 (-12)
24M → 40K
9:19/mi
7:58 split
25.2M
3:38:57
Rank: #16835 (+1)
40K → 25.2M
9:49/mi
3:23 split
Finish· 26.22 mi
3:48:07
Rank: #16881 (-46)
25.2M → Finish
9:00/mi
9:10 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:47
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time1:58:20
Pace9:02 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2725:538:2025:53
8:20
-
10K
6.21 mi11:19:4352:098:2426:16
8:27
+0:07
15K
9.32 mi11:46:031:18:298:2526:20
8:29
+0:02
20K
12.43 mi12:11:421:44:088:2325:39
8:15
-0:14
Half
13.11 mi12:17:211:49:478:225:39
8:17
+0:02
25K
15.53 mi12:38:012:10:278:2420:40
8:31
+0:14
30K
18.64 mi13:05:552:38:218:3027:54
8:59
+0:28
20M
20.00 mi13:18:192:50:458:3212:24
9:07
+0:08
21M
21.00 mi13:28:013:00:278:369:42
9:42
+0:35
35K
21.75 mi13:34:363:07:028:366:35
8:48
-0:54
23M
23.00 mi13:46:053:18:318:3811:29
9:10
+0:22
24M
24.00 mi13:55:103:27:368:399:05
9:05
-0:05
40K
24.85 mi14:03:083:35:348:407:58
9:19
+0:14
25.2M
25.20 mi14:06:313:38:578:413:23
9:49
+0:30
Finish
26.22 mi14:15:413:48:078:429:10
9:00
-0:49

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

8:15 /mi

Average Pace

8:42 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:06

76% of race

Time at Steady Pace

50:38

22% of race

Time at Slower Pace

3:23

1% of race

Average Pace: 8:42 /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 mi10:53:2725:538:2025:53
8:20
#16373
10K
6.21 mi11:19:4352:098:2426:16
8:27
#17169
15K
9.32 mi11:46:031:18:298:2526:20
8:29
#17331
20K
12.43 mi12:11:421:44:088:2325:39
8:15
#16794
Half
13.11 mi12:17:211:49:478:225:39
8:17
#16792
25K
15.53 mi12:38:012:10:278:2420:40
8:31
#16722
30K
18.64 mi13:05:552:38:218:3027:54
8:59
#16745
20M
20.00 mi13:18:192:50:458:3212:24
9:07
#16762
21M
21.00 mi13:28:013:00:278:369:42
9:42
#16758
35K
21.75 mi13:34:363:07:028:366:35
8:48
#16747
23M
23.00 mi13:46:053:18:318:3811:29
9:10
#16779
24M
24.00 mi13:55:103:27:368:399:05
9:05
#16824
40K
24.85 mi14:03:083:35:348:407:58
9:19
#16836
25.2M
25.20 mi14:06:313:38:578:413:23
9:49
#16835
Finish
26.22 mi14:15:413:48:078:429:10
9:00
#16881
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi163735516551617643(Top 66%)6298(Top 55%)6298(Top 129%)
10K6.21 mi3.10 mi17169-7966033-5176033-51717965(Top 67%)6454(Top 57%)6454(Top 132%)
15K9.32 mi3.11 mi17331-1626115-826115-8217643(Top 66%)6298(Top 55%)6298(Top 129%)
20K12.43 mi3.11 mi16794+5375800+3155800+31515339(Top 58%)4930(Top 43%)4930(Top 101%)
Half13.11 mi0.68 mi16792+25794+65794+616433(Top 62%)5565(Top 49%)5565(Top 114%)
25K15.53 mi2.42 mi16722+705784+105784+1016365(Top 61%)5653(Top 49%)5653(Top 116%)
30K18.64 mi3.11 mi16745-235824-405824-4017067(Top 64%)6103(Top 53%)6103(Top 125%)
20M20.00 mi1.36 mi16762-175845-215845-2117200(Top 65%)6281(Top 55%)6281(Top 129%)
21M21.00 mi1.00 mi16758+45844+15844+116862(Top 63%)6109(Top 53%)6109(Top 125%)
35K21.75 mi0.75 mi16747+115848-45848-416963(Top 64%)6257(Top 55%)6257(Top 128%)
23M23.00 mi1.25 mi16779-325891-435891-4316922(Top 64%)6248(Top 55%)6248(Top 128%)
24M24.00 mi1.00 mi16824-455940-495940-4917607(Top 66%)6691(Top 59%)6691(Top 137%)
40K24.85 mi0.85 mi16836-125968-285968-2817610(Top 66%)6740(Top 59%)6740(Top 138%)
25.2M25.20 mi0.35 mi16835+15965+35965+316631(Top 62%)6220(Top 54%)6220(Top 127%)
Finish26.22 mi1.02 mi16881-466009-446009-4417966(Top 67%)6892(Top 60%)6892(Top 141%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

17643

Females

6298

F18-39

6298

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17965

Females

6454

F18-39

6454

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

17643

Females

6298

F18-39

6298

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15339

Females

4930

F18-39

4930

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16433

Females

5565

F18-39

5565

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16365

Females

5653

F18-39

5653

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17067

Females

6103

F18-39

6103

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17200

Females

6281

F18-39

6281

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16862

Females

6109

F18-39

6109

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

16963

Females

6257

F18-39

6257

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

16922

Females

6248

F18-39

6248

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

17607

Females

6691

F18-39

6691

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17610

Females

6740

F18-39

6740

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16631

Females

6220

F18-39

6220

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17966

Females

6892

F18-39

6892

Passing Analysis

Category:
Athletes Passed
1578
Passed By
2086
Net Change
-508
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16373
5K → 10K79875-796#16373#17169
10K → 15K130292-162#17169#17331
15K → 20K55720+537#17331#16794
20K → Half2321+2#16794#16792
Half → 25K15686+70#16792#16722
25K → 30K168191-23#16722#16745
30K → 20M7895-17#16745#16762
20M → 21M8177+4#16762#16758
21M → 35K5039+11#16758#16747
35K → 23M75107-32#16747#16779
23M → 24M4590-45#16779#16824
24M → 40K5062-12#16824#16836
40K → 25.2M3231+1#16836#16835
25.2M → Finish54100-46#16835#16881
TOTALS15782086-508
📊

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