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BOSTON MARATHON 2023

Caroline Muir

Bib: 17411•F

CA

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
25:24
Rank: #15295
Start → 5K
8:11/mi
25:24 split
10K· 6.21 mi
50:21
Rank: #15152 (+143)
5K → 10K
8:02/mi
24:57 split
15K· 9.32 mi
1:15:12
Rank: #14891 (+261)
10K → 15K
8:00/mi
24:51 split
20K· 12.43 mi
1:40:58
Rank: #15054 (-163)
15K → 20K
8:18/mi
25:46 split
Half· 13.11 mi
1:46:47
Rank: #15220 (-166)
20K → Half
8:32/mi
5:49 split
25K· 15.53 mi
2:08:56
Rank: #16033 (-813)
Half → 25K
9:08/mi
22:09 split
30K· 18.64 mi
2:41:01
Rank: #17589 (-1556)
25K → 30K
10:20/mi
32:05 split
20M
2:52:55
Rank: #17392 (+197)
30K → 20M
8:45/mi
11:54 split
21M
3:03:16
Rank: #17554 (-162)
20M → 21M
10:21/mi
10:21 split
35K· 21.75 mi
3:09:12
Rank: #17337 (+217)
21M → 35K
7:56/mi
5:56 split
23M
3:20:08
Rank: #17181 (+156)
35K → 23M
8:44/mi
10:56 split
24M
3:28:08
Rank: #16935 (+246)
23M → 24M
8:00/mi
8:00 split
40K· 24.85 mi
3:35:44
Rank: #16882 (+53)
24M → 40K
8:53/mi
7:36 split
25.2M
3:39:10
Rank: #16893 (-11)
40K → 25.2M
9:57/mi
3:26 split
Finish· 26.22 mi
3:47:23
Rank: #16720 (+173)
25.2M → Finish
8:04/mi
8:13 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:47
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time2:00:36
Pace9:12 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1225:248:1125:24
8:11
-
10K
6.21 mi11:41:0950:218:0624:57
8:02
-0:09
15K
9.32 mi12:06:001:15:128:0424:51
8:00
-0:02
20K
12.43 mi12:31:461:40:588:0725:46
8:18
+0:18
Half
13.11 mi12:37:351:46:478:095:49
8:32
+0:14
25K
15.53 mi12:59:442:08:568:1822:09
9:08
+0:36
30K
18.64 mi13:31:492:41:018:3832:05
10:20
+1:12
20M
20.00 mi13:43:432:52:558:3911:54
8:45
-1:35
21M
21.00 mi13:54:043:03:168:4410:21
10:21
+1:36
35K
21.75 mi14:00:003:09:128:425:56
7:56
-2:25
23M
23.00 mi14:10:563:20:088:4210:56
8:44
+0:48
24M
24.00 mi14:18:563:28:088:408:00
8:00
-0:44
40K
24.85 mi14:26:323:35:448:417:36
8:53
+0:53
25.2M
25.20 mi14:29:583:39:108:423:26
9:57
+1:04
Finish
26.22 mi14:38:113:47:238:418:13
8:04
-1:53

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

7:56 /mi

Average Pace

8:41 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:11:57

32% of race

Time at Steady Pace

1:27:25

38% of race

Time at Slower Pace

1:08:01

30% of race

Average Pace: 8:40 /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 mi11:16:1225:248:1125:24
8:11
#15295
10K
6.21 mi11:41:0950:218:0624:57
8:02
#15152
15K
9.32 mi12:06:001:15:128:0424:51
8:00
#14891
20K
12.43 mi12:31:461:40:588:0725:46
8:18
#15054
Half
13.11 mi12:37:351:46:478:095:49
8:32
#15220
25K
15.53 mi12:59:442:08:568:1822:09
9:08
#16033
30K
18.64 mi13:31:492:41:018:3832:05
10:20
#17589
20M
20.00 mi13:43:432:52:558:3911:54
8:45
#17392
21M
21.00 mi13:54:043:03:168:4410:21
10:21
#17554
35K
21.75 mi14:00:003:09:128:425:56
7:56
#17337
23M
23.00 mi14:10:563:20:088:4210:56
8:44
#17181
24M
24.00 mi14:18:563:28:088:408:00
8:00
#16935
40K
24.85 mi14:26:323:35:448:417:36
8:53
#16882
25.2M
25.20 mi14:29:583:39:108:423:26
9:57
#16893
Finish
26.22 mi14:38:113:47:238:418:13
8:04
#16720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152954832483214393(Top 54%)4324(Top 38%)4324(Top 89%)
10K6.21 mi3.10 mi15152+1434745+874745+8715035(Top 56%)4704(Top 41%)4704(Top 96%)
15K9.32 mi3.11 mi14891+2614595+1504595+15014393(Top 54%)4324(Top 38%)4324(Top 89%)
20K12.43 mi3.11 mi15054-1634717-1224717-12215583(Top 59%)5086(Top 45%)5086(Top 104%)
Half13.11 mi0.68 mi15220-1664824-1074824-10717858(Top 67%)6387(Top 56%)6387(Top 131%)
25K15.53 mi2.42 mi16033-8135356-5325356-53219568(Top 74%)7459(Top 65%)7459(Top 153%)
30K18.64 mi3.11 mi17589-15566313-9576313-95721836(Top 82%)8809(Top 77%)8809(Top 180%)
20M20.00 mi1.36 mi17392+1976212+1016212+10115219(Top 57%)5128(Top 45%)5128(Top 105%)
21M21.00 mi1.00 mi17554-1626329-1176329-11719150(Top 72%)7430(Top 65%)7430(Top 152%)
35K21.75 mi0.75 mi17337+2176208+1216208+12111698(Top 44%)3277(Top 29%)3277(Top 67%)
23M23.00 mi1.25 mi17181+1566122+866122+8614617(Top 55%)4970(Top 44%)4970(Top 102%)
24M24.00 mi1.00 mi16935+2466000+1226000+12211288(Top 42%)3250(Top 28%)3250(Top 67%)
40K24.85 mi0.85 mi16882+535990+105990+1015586(Top 59%)5631(Top 49%)5631(Top 115%)
25.2M25.20 mi0.35 mi16893-116010-206010-2017227(Top 65%)6553(Top 57%)6553(Top 134%)
Finish26.22 mi1.02 mi16720+1735913+975913+9712605(Top 47%)4022(Top 35%)4022(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14393

Females

4324

F18-39

4324

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

15035

Females

4704

F18-39

4704

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14393

Females

4324

F18-39

4324

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15583

Females

5086

F18-39

5086

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

17858

Females

6387

F18-39

6387

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

19568

Females

7459

F18-39

7459

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21836

Females

8809

F18-39

8809

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

15219

Females

5128

F18-39

5128

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

19150

Females

7430

F18-39

7430

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11698

Females

3277

F18-39

3277

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

14617

Females

4970

F18-39

4970

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11288

Females

3250

F18-39

3250

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15586

Females

5631

F18-39

5631

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17227

Females

6553

F18-39

6553

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12605

Females

4022

F18-39

4022

Passing Analysis

Category:
Athletes Passed
2081
Passed By
3506
Net Change
-1425
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15295
5K → 10K391248+143#15295#15152
10K → 15K33271+261#15152#14891
15K → 20K140303-163#14891#15054
20K → Half10176-166#15054#15220
Half → 25K20833-813#15220#16033
25K → 30K181574-1556#16033#17589
30K → 20M2036+197#17589#17392
20M → 21M43205-162#17392#17554
21M → 35K2181+217#17554#17337
35K → 23M17216+156#17337#17181
23M → 24M2460+246#17181#16935
24M → 40K8128+53#16935#16882
40K → 25.2M2536-11#16882#16893
25.2M → Finish1829+173#16893#16720
TOTALS20813506-1425
📊

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