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BOSTON MARATHON 2023

Cheryl Shefchik

Bib: 3994•F

VA

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
26:40
Rank: #18145
Start → 5K
26:40 | 8:35/mi
10K· 6.21 mi
54:27
Rank: #19485 (-1340)
5K → 10K
27:47 | 8:57/mi
15K· 9.32 mi
1:23:06
Rank: #20199 (-714)
10K → 15K
28:39 | 9:13/mi
20K· 12.43 mi
1:52:30
Rank: #20593 (-394)
15K → 20K
29:24 | 9:28/mi
Half· 13.11 mi
1:58:40
Rank: #20587 (+6)
20K → Half
6:10 | 9:02/mi
25K· 15.53 mi
2:21:25
Rank: #20588 (-1)
Half → 25K
22:45 | 9:23/mi
30K· 18.64 mi
2:50:29
Rank: #20258 (+330)
25K → 30K
29:04 | 9:21/mi
20M
3:02:59
Rank: #20040 (+218)
30K → 20M
12:30 | 9:12/mi
21M
3:12:43
Rank: #19849 (+191)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:19:25
Rank: #19768 (+81)
21M → 35K
6:42 | 8:57/mi
23M
3:31:02
Rank: #19638 (+130)
35K → 23M
11:37 | 9:17/mi
24M
3:39:54
Rank: #19519 (+119)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:48:06
Rank: #19489 (+30)
24M → 40K
8:12 | 9:35/mi
25.2M
3:51:23
Rank: #19444 (+45)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
4:00:00
Rank: #19315 (+129)
25.2M → Finish
8:37 | 8:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:40
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:01:20
Pace9:15 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1926:408:3526:40
8:35
-
10K
6.21 mi11:21:0654:278:4627:47
8:57
+0:22
15K
9.32 mi11:49:451:23:068:5528:39
9:13
+0:16
20K
12.43 mi12:19:091:52:309:0329:24
9:28
+0:15
Half
13.11 mi12:25:191:58:409:036:10
9:02
-0:26
25K
15.53 mi12:48:042:21:259:0622:45
9:23
+0:21
30K
18.64 mi13:17:082:50:299:0929:04
9:21
-0:02
20M
20.00 mi13:29:383:02:599:0912:30
9:12
-0:09
21M
21.00 mi13:39:223:12:439:119:44
9:44
+0:32
35K
21.75 mi13:46:043:19:259:106:42
8:57
-0:47
23M
23.00 mi13:57:413:31:029:1111:37
9:17
+0:20
24M
24.00 mi14:06:333:39:549:108:52
8:52
-0:25
40K
24.85 mi14:14:453:48:069:118:12
9:35
+0:43
25.2M
25.20 mi14:18:023:51:239:113:17
9:31
-0:04
Finish
26.22 mi14:26:394:00:009:108:37
8:27
-1:04

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

8:27 /mi

Average Pace

9:10 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:34

57% of race

Time at Steady Pace

1:42:26

43% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:09 /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 mi10:53:1926:408:3526:40
8:35
#18145
10K
6.21 mi11:21:0654:278:4627:47
8:57
#19485
15K
9.32 mi11:49:451:23:068:5528:39
9:13
#20199
20K
12.43 mi12:19:091:52:309:0329:24
9:28
#20593
Half
13.11 mi12:25:191:58:409:036:10
9:02
#20587
25K
15.53 mi12:48:042:21:259:0622:45
9:23
#20588
30K
18.64 mi13:17:082:50:299:0929:04
9:21
#20258
20M
20.00 mi13:29:383:02:599:0912:30
9:12
#20040
21M
21.00 mi13:39:223:12:439:119:44
9:44
#19849
35K
21.75 mi13:46:043:19:259:106:42
8:57
#19768
23M
23.00 mi13:57:413:31:029:1111:37
9:17
#19638
24M
24.00 mi14:06:333:39:549:108:52
8:52
#19519
40K
24.85 mi14:14:453:48:069:118:12
9:35
#19489
25.2M
25.20 mi14:18:023:51:239:113:17
9:31
#19444
Finish
26.22 mi14:26:394:00:009:108:37
8:27
#19315
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi181456651665121390(Top 80%)8447(Top 74%)8447(Top 173%)
10K6.21 mi3.10 mi19485-13407456-8057456-80520665(Top 78%)8076(Top 71%)8076(Top 165%)
15K9.32 mi3.11 mi20199-7147846-3907846-39021390(Top 80%)8447(Top 74%)8447(Top 173%)
20K12.43 mi3.11 mi20593-3948051-2058051-20521452(Top 81%)8501(Top 74%)8501(Top 174%)
Half13.11 mi0.68 mi20587+68042+98042+920646(Top 78%)8057(Top 71%)8057(Top 165%)
25K15.53 mi2.42 mi20588-18030+128030+1220471(Top 77%)7973(Top 70%)7973(Top 163%)
30K18.64 mi3.11 mi20258+3307876+1547876+15418863(Top 71%)7122(Top 62%)7122(Top 146%)
20M20.00 mi1.36 mi20040+2187768+1087768+10817576(Top 66%)6503(Top 57%)6503(Top 133%)
21M21.00 mi1.00 mi19849+1917655+1137655+11317018(Top 64%)6211(Top 54%)6211(Top 127%)
35K21.75 mi0.75 mi19768+817612+437612+4317775(Top 67%)6723(Top 59%)6723(Top 138%)
23M23.00 mi1.25 mi19638+1307545+677545+6717451(Top 66%)6546(Top 57%)6546(Top 134%)
24M24.00 mi1.00 mi19519+1197496+497496+4916645(Top 63%)6175(Top 54%)6175(Top 126%)
40K24.85 mi0.85 mi19489+307486+107486+1018691(Top 70%)7331(Top 64%)7331(Top 150%)
25.2M25.20 mi0.35 mi19444+457462+247462+2415401(Top 58%)5559(Top 49%)5559(Top 114%)
Finish26.22 mi1.02 mi19315+1297389+737389+7315190(Top 57%)5378(Top 47%)5378(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21390

Females

8447

F18-39

8447

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20665

Females

8076

F18-39

8076

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21390

Females

8447

F18-39

8447

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21452

Females

8501

F18-39

8501

20K→Half

12.4 - 13.1 mi

Top 78%
×2stories
+19ft-37ft

Overall

20646

Females

8057

F18-39

8057

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

20471

Females

7973

F18-39

7973

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

18863

Females

7122

F18-39

7122

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

17576

Females

6503

F18-39

6503

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17018

Females

6211

F18-39

6211

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

17775

Females

6723

F18-39

6723

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

17451

Females

6546

F18-39

6546

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16645

Females

6175

F18-39

6175

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18691

Females

7331

F18-39

7331

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15401

Females

5559

F18-39

5559

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

15190

Females

5378

F18-39

5378

Passing Analysis

Category:
Athletes Passed
1663
Passed By
2833
Net Change
-1170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18145
5K → 10K441384-1340#18145#19485
10K → 15K32746-714#19485#20199
15K → 20K71465-394#20199#20593
20K → Half2822+6#20593#20587
Half → 25K101102-1#20587#20588
25K → 30K35020+330#20588#20258
30K → 20M2257+218#20258#20040
20M → 21M2009+191#20040#19849
21M → 35K9514+81#19849#19768
35K → 23M14111+130#19768#19638
23M → 24M1278+119#19638#19519
24M → 40K6535+30#19519#19489
40K → 25.2M461+45#19489#19444
25.2M → Finish1389+129#19444#19315
TOTALS16632833-1170
📊

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