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BOSTON MARATHON 2023

Shelby Henry

Bib: 22312•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 46%
Division (F50-54)
#0 / 1207
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:33
Rank: #17888
Start → 5K
26:33 | 8:33/mi
10K· 6.21 mi
52:55
Rank: #17998 (-110)
5K → 10K
26:22 | 8:29/mi
15K· 9.32 mi
1:19:10
Rank: #17820 (+178)
10K → 15K
26:15 | 8:27/mi
20K· 12.43 mi
1:46:09
Rank: #17844 (-24)
15K → 20K
26:59 | 8:41/mi
Half· 13.11 mi
1:51:58
Rank: #17836 (+8)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:13:04
Rank: #17728 (+108)
Half → 25K
21:06 | 8:42/mi
30K· 18.64 mi
2:40:56
Rank: #17566 (+162)
25K → 30K
27:52 | 8:58/mi
20M
2:53:04
Rank: #17441 (+125)
30K → 20M
12:08 | 8:56/mi
21M
3:02:38
Rank: #17362 (+79)
20M → 21M
9:34 | 9:34/mi
35K· 21.75 mi
3:09:15
Rank: #17354 (+8)
21M → 35K
6:37 | 8:51/mi
23M
3:20:38
Rank: #17310 (+44)
35K → 23M
11:23 | 9:05/mi
24M
3:29:12
Rank: #17199 (+111)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:37:50
Rank: #17385 (-186)
24M → 40K
8:38 | 10:06/mi
25.2M
3:41:20
Rank: #17411 (-26)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:49:54
Rank: #17327 (+84)
25.2M → Finish
8:34 | 8:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:58
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:57:56
Pace9:00 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5926:338:3326:33
8:33
-
10K
6.21 mi11:47:2152:558:3126:22
8:29
-0:04
15K
9.32 mi12:13:361:19:108:3026:15
8:27
-0:02
20K
12.43 mi12:40:351:46:098:3226:59
8:41
+0:14
Half
13.11 mi12:46:241:51:588:325:49
8:32
-0:09
25K
15.53 mi13:07:302:13:048:3421:06
8:42
+0:10
30K
18.64 mi13:35:222:40:568:3827:52
8:58
+0:16
20M
20.00 mi13:47:302:53:048:3912:08
8:56
-0:02
21M
21.00 mi13:57:043:02:388:429:34
9:34
+0:38
35K
21.75 mi14:03:413:09:158:426:37
8:51
-0:43
23M
23.00 mi14:15:043:20:388:4311:23
9:05
+0:14
24M
24.00 mi14:23:383:29:128:438:34
8:34
-0:31
40K
24.85 mi14:32:163:37:508:468:38
10:06
+1:32
25.2M
25.20 mi14:35:463:41:208:473:30
10:09
+0:03
Finish
26.22 mi14:44:203:49:548:468:34
8:24
-1:45

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

8:24 /mi

Average Pace

8:46 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:34

4% of race

Time at Steady Pace

3:08:15

82% of race

Time at Slower Pace

33:05

14% of race

Average Pace: 8:46 /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 mi11:20:5926:338:3326:33
8:33
#17888
10K
6.21 mi11:47:2152:558:3126:22
8:29
#17998
15K
9.32 mi12:13:361:19:108:3026:15
8:27
#17820
20K
12.43 mi12:40:351:46:098:3226:59
8:41
#17844
Half
13.11 mi12:46:241:51:588:325:49
8:32
#17836
25K
15.53 mi13:07:302:13:048:3421:06
8:42
#17728
30K
18.64 mi13:35:222:40:568:3827:52
8:58
#17566
20M
20.00 mi13:47:302:53:048:3912:08
8:56
#17441
21M
21.00 mi13:57:043:02:388:429:34
9:34
#17362
35K
21.75 mi14:03:413:09:158:426:37
8:51
#17354
23M
23.00 mi14:15:043:20:388:4311:23
9:05
#17310
24M
24.00 mi14:23:383:29:128:438:34
8:34
#17199
40K
24.85 mi14:32:163:37:508:468:38
10:06
#17385
25.2M
25.20 mi14:35:463:41:208:473:30
10:09
#17411
Finish
26.22 mi14:44:203:49:548:468:34
8:24
#17327
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi178886479647917470(Top 66%)6194(Top 54%)6194(Top 513%)
10K6.21 mi3.10 mi17998-1106534-556534-5518178(Top 68%)6582(Top 58%)6582(Top 545%)
15K9.32 mi3.11 mi17820+1786415+1196415+11917470(Top 66%)6194(Top 54%)6194(Top 513%)
20K12.43 mi3.11 mi17844-246431-166431-1618028(Top 68%)6524(Top 57%)6524(Top 541%)
Half13.11 mi0.68 mi17836+86423+86423+817880(Top 67%)6409(Top 56%)6409(Top 531%)
25K15.53 mi2.42 mi17728+1086370+536370+5317396(Top 65%)6222(Top 54%)6222(Top 515%)
30K18.64 mi3.11 mi17566+1626299+716299+7117012(Top 64%)6070(Top 53%)6070(Top 503%)
20M20.00 mi1.36 mi17441+1256239+606239+6016186(Top 61%)5683(Top 50%)5683(Top 471%)
21M21.00 mi1.00 mi17362+796211+286211+2816302(Top 61%)5804(Top 51%)5804(Top 481%)
35K21.75 mi0.75 mi17354+86215-46215-417204(Top 65%)6389(Top 56%)6389(Top 529%)
23M23.00 mi1.25 mi17310+446201+146201+1416513(Top 62%)6031(Top 53%)6031(Top 500%)
24M24.00 mi1.00 mi17199+1116154+476154+4714914(Top 56%)5191(Top 45%)5191(Top 430%)
40K24.85 mi0.85 mi17385-1866273-1196273-11920237(Top 76%)8181(Top 72%)8181(Top 678%)
25.2M25.20 mi0.35 mi17411-266296-236296-2317974(Top 68%)6945(Top 61%)6945(Top 575%)
Finish26.22 mi1.02 mi17327+846257+396257+3914824(Top 56%)5173(Top 45%)5173(Top 429%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

17470

Females

6194

F50-54

6194

5K→10K

3.1 - 6.2 mi

Top 68%
×5stories
+79ft-138ft

Overall

18178

Females

6582

F50-54

6582

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

17470

Females

6194

F50-54

6194

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18028

Females

6524

F50-54

6524

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

17880

Females

6409

F50-54

6409

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17396

Females

6222

F50-54

6222

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17012

Females

6070

F50-54

6070

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16186

Females

5683

F50-54

5683

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

16302

Females

5804

F50-54

5804

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

17204

Females

6389

F50-54

6389

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16513

Females

6031

F50-54

6031

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14914

Females

5191

F50-54

5191

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20237

Females

8181

F50-54

8181

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

17974

Females

6945

F50-54

6945

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

14824

Females

5173

F50-54

5173

Passing Analysis

Category:
Athletes Passed
1899
Passed By
1338
Net Change
+561
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17888
5K → 10K264374-110#17888#17998
10K → 15K289111+178#17998#17820
15K → 20K157181-24#17820#17844
20K → Half3426+8#17844#17836
Half → 25K18274+108#17836#17728
25K → 30K26098+162#17728#17566
30K → 20M14924+125#17566#17441
20M → 21M12748+79#17441#17362
21M → 35K5749+8#17362#17354
35K → 23M10359+44#17354#17310
23M → 24M13019+111#17310#17199
24M → 40K22208-186#17199#17385
40K → 25.2M2450-26#17385#17411
25.2M → Finish10117+84#17411#17327
TOTALS18991338+561
📊

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