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BOSTON MARATHON 2023

Stephanie Clark

Bib: 17265•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:28
Rank: #17696
Start → 5K
8:31/mi
26:28 split
10K· 6.21 mi
52:42
Rank: #17799 (-103)
5K → 10K
8:27/mi
26:14 split
15K· 9.32 mi
1:20:49
Rank: #18878 (-1079)
10K → 15K
9:03/mi
28:07 split
20K· 12.43 mi
1:48:34
Rank: #18997 (-119)
15K → 20K
8:56/mi
27:45 split
Half· 13.11 mi
1:54:40
Rank: #19059 (-62)
20K → Half
8:56/mi
6:06 split
25K· 15.53 mi
2:16:45
Rank: #19100 (-41)
Half → 25K
9:06/mi
22:05 split
30K· 18.64 mi
2:45:56
Rank: #19115 (-15)
25K → 30K
9:24/mi
29:11 split
20M
2:58:51
Rank: #19087 (+28)
30K → 20M
9:30/mi
12:55 split
21M
3:08:57
Rank: #19049 (+38)
20M → 21M
10:06/mi
10:06 split
35K· 21.75 mi
3:15:55
Rank: #19050 (-1)
21M → 35K
9:19/mi
6:58 split
23M
3:27:33
Rank: #18951 (+99)
35K → 23M
9:17/mi
11:38 split
24M
3:36:20
Rank: #18812 (+139)
23M → 24M
8:47/mi
8:47 split
40K· 24.85 mi
3:43:55
Rank: #18712 (+100)
24M → 40K
8:52/mi
7:35 split
25.2M
3:47:11
Rank: #18652 (+60)
40K → 25.2M
9:28/mi
3:16 split
Finish· 26.22 mi
3:55:49
Rank: #18522 (+130)
25.2M → Finish
8:28/mi
8:38 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:40
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:01:09
Pace9:15 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0426:288:3126:28
8:31
-
10K
6.21 mi11:45:1852:428:2926:14
8:27
-0:04
15K
9.32 mi12:13:251:20:498:4028:07
9:03
+0:36
20K
12.43 mi12:41:101:48:348:4427:45
8:56
-0:07
Half
13.11 mi12:47:161:54:408:456:06
8:56
0:00
25K
15.53 mi13:09:212:16:458:4822:05
9:06
+0:10
30K
18.64 mi13:38:322:45:568:5429:11
9:24
+0:18
20M
20.00 mi13:51:272:58:518:5712:55
9:30
+0:06
21M
21.00 mi14:01:333:08:579:0010:06
10:06
+0:36
35K
21.75 mi14:08:313:15:559:016:58
9:19
-0:47
23M
23.00 mi14:20:093:27:339:0111:38
9:17
-0:02
24M
24.00 mi14:28:563:36:209:018:47
8:47
-0:30
40K
24.85 mi14:36:313:43:559:017:35
8:52
+0:05
25.2M
25.20 mi14:39:473:47:119:013:16
9:28
+0:36
Finish
26.22 mi14:48:253:55:499:008:38
8:28
-1:00

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

9:00 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:23

74% of race

Time at Steady Pace

52:20

22% of race

Time at Slower Pace

10:06

4% of race

Average Pace: 9:00 /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 mi11:19:0426:288:3126:28
8:31
#17696
10K
6.21 mi11:45:1852:428:2926:14
8:27
#17799
15K
9.32 mi12:13:251:20:498:4028:07
9:03
#18878
20K
12.43 mi12:41:101:48:348:4427:45
8:56
#18997
Half
13.11 mi12:47:161:54:408:456:06
8:56
#19059
25K
15.53 mi13:09:212:16:458:4822:05
9:06
#19100
30K
18.64 mi13:38:322:45:568:5429:11
9:24
#19115
20M
20.00 mi13:51:272:58:518:5712:55
9:30
#19087
21M
21.00 mi14:01:333:08:579:0010:06
10:06
#19049
35K
21.75 mi14:08:313:15:559:016:58
9:19
#19050
23M
23.00 mi14:20:093:27:339:0111:38
9:17
#18951
24M
24.00 mi14:28:563:36:209:018:47
8:47
#18812
40K
24.85 mi14:36:313:43:559:017:35
8:52
#18712
25.2M
25.20 mi14:39:473:47:119:013:16
9:28
#18652
Finish
26.22 mi14:48:253:55:499:008:38
8:28
#18522
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi176966372637220733(Top 78%)8080(Top 71%)8080(Top 430%)
10K6.21 mi3.10 mi17799-1036403-316403-3117907(Top 67%)6428(Top 56%)6428(Top 342%)
15K9.32 mi3.11 mi18878-10797055-6527055-65220733(Top 78%)8080(Top 71%)8080(Top 430%)
20K12.43 mi3.11 mi18997-1197122-677122-6719376(Top 73%)7307(Top 64%)7307(Top 389%)
Half13.11 mi0.68 mi19059-627157-357157-3520190(Top 76%)7761(Top 68%)7761(Top 413%)
25K15.53 mi2.42 mi19100-417175-187175-1819452(Top 73%)7396(Top 65%)7396(Top 394%)
30K18.64 mi3.11 mi19115-157205-307205-3019010(Top 71%)7198(Top 63%)7198(Top 383%)
20M20.00 mi1.36 mi19087+287202+37202+318885(Top 71%)7233(Top 63%)7233(Top 385%)
21M21.00 mi1.00 mi19049+387198+47198+418405(Top 69%)7003(Top 61%)7003(Top 373%)
35K21.75 mi0.75 mi19050-17202-47202-419224(Top 72%)7507(Top 66%)7507(Top 400%)
23M23.00 mi1.25 mi18951+997155+477155+4717502(Top 66%)6574(Top 58%)6574(Top 350%)
24M24.00 mi1.00 mi18812+1397094+617094+6116144(Top 61%)5894(Top 52%)5894(Top 314%)
40K24.85 mi0.85 mi18712+1007042+527042+5215497(Top 58%)5591(Top 49%)5591(Top 298%)
25.2M25.20 mi0.35 mi18652+607021+217021+2115168(Top 57%)5422(Top 47%)5422(Top 289%)
Finish26.22 mi1.02 mi18522+1306949+726949+7215293(Top 57%)5436(Top 48%)5436(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20733

Females

8080

F40-44

8080

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17907

Females

6428

F40-44

6428

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20733

Females

8080

F40-44

8080

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19376

Females

7307

F40-44

7307

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20190

Females

7761

F40-44

7761

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

19452

Females

7396

F40-44

7396

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

19010

Females

7198

F40-44

7198

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18885

Females

7233

F40-44

7233

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18405

Females

7003

F40-44

7003

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19224

Females

7507

F40-44

7507

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17502

Females

6574

F40-44

6574

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16144

Females

5894

F40-44

5894

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15497

Females

5591

F40-44

5591

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15168

Females

5422

F40-44

5422

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15293

Females

5436

F40-44

5436

Passing Analysis

Category:
Athletes Passed
1492
Passed By
2318
Net Change
-826
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17696
5K → 10K257360-103#17696#17799
10K → 15K131092-1079#17799#18878
15K → 20K124243-119#18878#18997
20K → Half668-62#18997#19059
Half → 25K107148-41#19059#19100
25K → 30K168183-15#19100#19115
30K → 20M9870+28#19115#19087
20M → 21M9456+38#19087#19049
21M → 35K4041-1#19049#19050
35K → 23M12526+99#19050#18951
23M → 24M1456+139#18951#18812
24M → 40K11212+100#18812#18712
40K → 25.2M644+60#18712#18652
25.2M → Finish1399+130#18652#18522
TOTALS14922318-826
📊

Passing Visuals

Category:
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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