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BOSTON MARATHON 2023

Claire Shenstone-Harris

Bib: 13193•F

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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 13%
Division (F18-39)
#0 / 4884
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:08
Rank: #9202
Start → 5K
23:08 | 7:27/mi
10K· 6.21 mi
46:26
Rank: #9775 (-573)
5K → 10K
23:18 | 7:30/mi
15K· 9.32 mi
1:09:32
Rank: #9690 (+85)
10K → 15K
23:06 | 7:26/mi
20K· 12.43 mi
1:32:50
Rank: #9572 (+118)
15K → 20K
23:18 | 7:30/mi
Half· 13.11 mi
1:37:52
Rank: #9554 (+18)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:31
Rank: #9659 (-105)
Half → 25K
18:39 | 7:42/mi
30K· 18.64 mi
2:20:44
Rank: #9587 (+72)
25K → 30K
24:13 | 7:48/mi
20M
2:31:13
Rank: #9452 (+135)
30K → 20M
10:29 | 7:43/mi
21M
2:39:21
Rank: #9326 (+126)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:45:04
Rank: #9319 (+7)
21M → 35K
5:43 | 7:38/mi
23M
2:54:37
Rank: #9172 (+147)
35K → 23M
9:33 | 7:38/mi
24M
3:01:57
Rank: #9034 (+138)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
3:08:08
Rank: #8860 (+174)
24M → 40K
6:11 | 7:14/mi
25.2M
3:10:44
Rank: #8744 (+116)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:17:37
Rank: #8506 (+238)
25.2M → Finish
6:53 | 6:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:52
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:39:45
Pace7:37 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5823:087:2723:08
7:27
-
10K
6.21 mi11:17:1646:267:2823:18
7:30
+0:03
15K
9.32 mi11:40:221:09:327:2823:06
7:26
-0:04
20K
12.43 mi12:03:401:32:507:2823:18
7:30
+0:04
Half
13.11 mi12:08:421:37:527:285:02
7:23
-0:07
25K
15.53 mi12:27:211:56:317:3018:39
7:42
+0:19
30K
18.64 mi12:51:342:20:447:3324:13
7:48
+0:06
20M
20.00 mi13:02:032:31:137:3410:29
7:43
-0:05
21M
21.00 mi13:10:112:39:217:358:08
8:08
+0:25
35K
21.75 mi13:15:542:45:047:355:43
7:38
-0:30
23M
23.00 mi13:25:272:54:377:369:33
7:38
0:00
24M
24.00 mi13:32:473:01:577:357:20
7:20
-0:18
40K
24.85 mi13:38:583:08:087:346:11
7:14
-0:06
25.2M
25.20 mi13:41:343:10:447:342:36
7:32
+0:18
Finish
26.22 mi13:48:273:17:377:336:53
6:45
-0:47

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

6:45 /mi

Average Pace

7:33 /mi

Slowest Pace

8:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:24

10% of race

Time at Steady Pace

1:55:44

59% of race

Time at Slower Pace

1:01:29

31% of race

Average Pace: 7:32 /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 mi10:53:5823:087:2723:08
7:27
#9202
10K
6.21 mi11:17:1646:267:2823:18
7:30
#9775
15K
9.32 mi11:40:221:09:327:2823:06
7:26
#9690
20K
12.43 mi12:03:401:32:507:2823:18
7:30
#9572
Half
13.11 mi12:08:421:37:527:285:02
7:23
#9554
25K
15.53 mi12:27:211:56:317:3018:39
7:42
#9659
30K
18.64 mi12:51:342:20:447:3324:13
7:48
#9587
20M
20.00 mi13:02:032:31:137:3410:29
7:43
#9452
21M
21.00 mi13:10:112:39:217:358:08
8:08
#9326
35K
21.75 mi13:15:542:45:047:355:43
7:38
#9319
23M
23.00 mi13:25:272:54:377:369:33
7:38
#9172
24M
24.00 mi13:32:473:01:577:357:20
7:20
#9034
40K
24.85 mi13:38:583:08:087:346:11
7:14
#8860
25.2M
25.20 mi13:41:343:10:447:342:36
7:32
#8744
Finish
26.22 mi13:48:273:17:377:336:53
6:45
#8506
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9202147414749654(Top 36%)1687(Top 15%)1687(Top 35%)
10K6.21 mi3.10 mi9775-5731733-2591733-25910448(Top 39%)2025(Top 18%)2025(Top 41%)
15K9.32 mi3.11 mi9690+851707+261707+269654(Top 36%)1687(Top 15%)1687(Top 35%)
20K12.43 mi3.11 mi9572+1181658+491658+499310(Top 35%)1602(Top 14%)1602(Top 33%)
Half13.11 mi0.68 mi9554+181648+101648+109288(Top 35%)1580(Top 14%)1580(Top 32%)
25K15.53 mi2.42 mi9659-1051707-591707-5910235(Top 38%)2098(Top 18%)2098(Top 43%)
30K18.64 mi3.11 mi9587+721712-51712-59324(Top 35%)1844(Top 16%)1844(Top 38%)
20M20.00 mi1.36 mi9452+1351686+261686+268312(Top 31%)1516(Top 13%)1516(Top 31%)
21M21.00 mi1.00 mi9326+1261664+221664+228220(Top 31%)1616(Top 14%)1616(Top 33%)
35K21.75 mi0.75 mi9319+71682-181682-189577(Top 36%)2162(Top 19%)2162(Top 44%)
23M23.00 mi1.25 mi9172+1471644+381644+387304(Top 27%)1301(Top 11%)1301(Top 27%)
24M24.00 mi1.00 mi9034+1381610+341610+346654(Top 25%)1136(Top 10%)1136(Top 23%)
40K24.85 mi0.85 mi8860+1741564+461564+465102(Top 19%)695(Top 6%)695(Top 14%)
25.2M25.20 mi0.35 mi8744+1161527+371527+374191(Top 16%)517(Top 5%)517(Top 11%)
Finish26.22 mi1.02 mi8506+2381442+851442+853847(Top 14%)438(Top 4%)438(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9654

Females

1687

F18-39

1687

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10448

Females

2025

F18-39

2025

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9654

Females

1687

F18-39

1687

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9310

Females

1602

F18-39

1602

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9288

Females

1580

F18-39

1580

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10235

Females

2098

F18-39

2098

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9324

Females

1844

F18-39

1844

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8312

Females

1516

F18-39

1516

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8220

Females

1616

F18-39

1616

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9577

Females

2162

F18-39

2162

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7304

Females

1301

F18-39

1301

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6654

Females

1136

F18-39

1136

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5102

Females

695

F18-39

695

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4191

Females

517

F18-39

517

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3847

Females

438

F18-39

438

Passing Analysis

Category:
Athletes Passed
2060*
Passed By
1364
Net Change
+696
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9202
5K → 10K112685-573#9202#9775
10K → 15K208123+85#9775#9690
15K → 20K20587+118#9690#9572
20K → Half3719+18#9572#9554
Half → 25K93198-105#9554#9659
25K → 30K201*129+72#9659#9587
30K → 20M16126+135#9587#9452
20M → 21M15125+126#9452#9326
21M → 35K5043+7#9326#9319
35K → 23M16518+147#9319#9172
23M → 24M1468+138#9172#9034
24M → 40K1751+174#9034#8860
40K → 25.2M1171+116#8860#8744
25.2M → Finish2391+238#8744#8506
TOTALS2060*1364+696

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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