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BOSTON MARATHON 2023

Caroline Cassidy

Bib: 29424•F

MA

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
27:45
Rank: #20125
Start → 5K
27:45 | 8:56/mi
10K· 6.21 mi
53:40
Rank: #18731 (+1394)
5K → 10K
25:55 | 8:21/mi
15K· 9.32 mi
1:20:22
Rank: #18606 (+125)
10K → 15K
26:42 | 8:36/mi
20K· 12.43 mi
1:46:59
Rank: #18259 (+347)
15K → 20K
26:37 | 8:34/mi
Half· 13.11 mi
1:52:39
Rank: #18166 (+93)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:13:26
Rank: #17891 (+275)
Half → 25K
20:47 | 8:34/mi
30K· 18.64 mi
2:41:15
Rank: #17664 (+227)
25K → 30K
27:49 | 8:57/mi
20M
2:53:45
Rank: #17648 (+16)
30K → 20M
12:30 | 9:12/mi
21M
3:03:33
Rank: #17635 (+13)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
3:10:27
Rank: #17685 (-50)
21M → 35K
6:54 | 9:13/mi
23M
3:22:31
Rank: #17810 (-125)
35K → 23M
12:04 | 9:38/mi
24M
3:32:01
Rank: #17908 (-98)
23M → 24M
9:30 | 9:30/mi
40K· 24.85 mi
3:40:11
Rank: #17943 (-35)
24M → 40K
8:10 | 9:33/mi
25.2M
3:43:40
Rank: #17941 (+2)
40K → 25.2M
3:29 | 10:06/mi
Finish· 26.22 mi
3:52:57
Rank: #17967 (-26)
25.2M → Finish
9:17 | 9:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:39
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time2:00:18
Pace9:11 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:2227:458:5627:45
8:56
-
10K
6.21 mi12:16:1753:408:3825:55
8:21
-0:35
15K
9.32 mi12:42:591:20:228:3726:42
8:36
+0:15
20K
12.43 mi13:09:361:46:598:3726:37
8:34
-0:02
Half
13.11 mi13:15:161:52:398:365:40
8:18
-0:16
25K
15.53 mi13:36:032:13:268:3520:47
8:34
+0:16
30K
18.64 mi14:03:522:41:158:3927:49
8:57
+0:23
20M
20.00 mi14:16:222:53:458:4112:30
9:12
+0:15
21M
21.00 mi14:26:103:03:338:449:48
9:48
+0:36
35K
21.75 mi14:33:043:10:278:456:54
9:13
-0:35
23M
23.00 mi14:45:083:22:318:4812:04
9:38
+0:25
24M
24.00 mi14:54:383:32:018:509:30
9:30
-0:08
40K
24.85 mi15:02:483:40:118:528:10
9:33
+0:03
25.2M
25.20 mi15:06:173:43:408:533:29
10:06
+0:33
Finish
26.22 mi15:15:343:52:578:539:17
9:07
-0:59

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

8:18 /mi

Average Pace

8:53 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:41

45% of race

Time at Steady Pace

1:24:15

36% of race

Time at Slower Pace

43:01

18% of race

Average Pace: 8:53 /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 mi11:50:2227:458:5627:45
8:56
#20125
10K
6.21 mi12:16:1753:408:3825:55
8:21
#18731
15K
9.32 mi12:42:591:20:228:3726:42
8:36
#18606
20K
12.43 mi13:09:361:46:598:3726:37
8:34
#18259
Half
13.11 mi13:15:161:52:398:365:40
8:18
#18166
25K
15.53 mi13:36:032:13:268:3520:47
8:34
#17891
30K
18.64 mi14:03:522:41:158:3927:49
8:57
#17664
20M
20.00 mi14:16:222:53:458:4112:30
9:12
#17648
21M
21.00 mi14:26:103:03:338:449:48
9:48
#17635
35K
21.75 mi14:33:043:10:278:456:54
9:13
#17685
23M
23.00 mi14:45:083:22:318:4812:04
9:38
#17810
24M
24.00 mi14:54:383:32:018:509:30
9:30
#17908
40K
24.85 mi15:02:483:40:118:528:10
9:33
#17943
25.2M
25.20 mi15:06:173:43:408:533:29
10:06
#17941
Finish
26.22 mi15:15:343:52:578:539:17
9:07
#17967
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi201257890789018411(Top 69%)6743(Top 59%)6743(Top 138%)
10K6.21 mi3.10 mi18731+13946967+9236967+92317211(Top 65%)6009(Top 53%)6009(Top 123%)
15K9.32 mi3.11 mi18606+1256885+826885+8218411(Top 69%)6743(Top 59%)6743(Top 138%)
20K12.43 mi3.11 mi18259+3476665+2206665+22017295(Top 65%)6106(Top 53%)6106(Top 125%)
Half13.11 mi0.68 mi18166+936611+546611+5416585(Top 62%)5668(Top 50%)5668(Top 116%)
25K15.53 mi2.42 mi17891+2756474+1376474+13716658(Top 63%)5814(Top 51%)5814(Top 119%)
30K18.64 mi3.11 mi17664+2276356+1186356+11816940(Top 64%)6031(Top 53%)6031(Top 123%)
20M20.00 mi1.36 mi17648+166356635617559(Top 66%)6487(Top 57%)6487(Top 133%)
21M21.00 mi1.00 mi17635+136371-156371-1517277(Top 65%)6354(Top 56%)6354(Top 130%)
35K21.75 mi0.75 mi17685-506416-456416-4518846(Top 71%)7300(Top 64%)7300(Top 149%)
23M23.00 mi1.25 mi17810-1256506-906506-9018867(Top 71%)7330(Top 64%)7330(Top 150%)
24M24.00 mi1.00 mi17908-986570-646570-6419215(Top 72%)7564(Top 66%)7564(Top 155%)
40K24.85 mi0.85 mi17943-356602-326602-3218522(Top 70%)7226(Top 63%)7226(Top 148%)
25.2M25.20 mi0.35 mi17941+26604-26604-217812(Top 67%)6862(Top 60%)6862(Top 140%)
Finish26.22 mi1.02 mi17967-266638-346638-3418526(Top 70%)7184(Top 63%)7184(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18411

Females

6743

F18-39

6743

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17211

Females

6009

F18-39

6009

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18411

Females

6743

F18-39

6743

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

17295

Females

6106

F18-39

6106

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16585

Females

5668

F18-39

5668

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16658

Females

5814

F18-39

5814

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

16940

Females

6031

F18-39

6031

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

17559

Females

6487

F18-39

6487

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17277

Females

6354

F18-39

6354

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

18846

Females

7300

F18-39

7300

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

18867

Females

7330

F18-39

7330

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19215

Females

7564

F18-39

7564

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18522

Females

7226

F18-39

7226

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17812

Females

6862

F18-39

6862

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18526

Females

7184

F18-39

7184

Passing Analysis

Category:
Athletes Passed
3162
Passed By
1004
Net Change
+2158
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20125
5K → 10K143844+1394#20125#18731
10K → 15K245120+125#18731#18606
15K → 20K37730+347#18606#18259
20K → Half963+93#18259#18166
Half → 25K30025+275#18166#17891
25K → 30K29265+227#17891#17664
30K → 20M9074+16#17664#17648
20M → 21M9279+13#17648#17635
21M → 35K3888-50#17635#17685
35K → 23M50175-125#17685#17810
23M → 24M33131-98#17810#17908
24M → 40K3974-35#17908#17943
40K → 25.2M2624+2#17943#17941
25.2M → Finish4672-26#17941#17967
TOTALS31621004+2158
📊

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