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BOSTON MARATHON 2023

Moira Cassidy

Bib: 23988•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:37
Rank: #21247
Start → 5K
28:37 | 9:13/mi
10K· 6.21 mi
57:14
Rank: #21440 (-193)
5K → 10K
28:37 | 9:13/mi
15K· 9.32 mi
1:27:51
Rank: #22067 (-627)
10K → 15K
30:37 | 9:51/mi
20K· 12.43 mi
1:56:59
Rank: #21844 (+223)
15K → 20K
29:08 | 9:23/mi
Half· 13.11 mi
2:03:13
Rank: #21794 (+50)
20K → Half
6:14 | 9:08/mi
25K· 15.53 mi
2:26:27
Rank: #21661 (+133)
Half → 25K
23:14 | 9:35/mi
30K· 18.64 mi
2:56:44
Rank: #21419 (+242)
25K → 30K
30:17 | 9:45/mi
20M
3:09:48
Rank: #21245 (+174)
30K → 20M
13:04 | 9:37/mi
21M
3:19:47
Rank: #21070 (+175)
20M → 21M
9:59 | 9:59/mi
35K· 21.75 mi
3:26:43
Rank: #20986 (+84)
21M → 35K
6:56 | 9:16/mi
23M
3:38:23
Rank: #20783 (+203)
35K → 23M
11:40 | 9:19/mi
24M
3:47:31
Rank: #20666 (+117)
23M → 24M
9:08 | 9:08/mi
40K· 24.85 mi
3:55:27
Rank: #20555 (+111)
24M → 40K
7:56 | 9:17/mi
25.2M
3:58:52
Rank: #20480 (+75)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
4:07:58
Rank: #20388 (+92)
25.2M → Finish
9:06 | 8:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:13
Pace9:24 /mi
2nd Half
Distance13.11 mi
Time2:04:45
Pace9:31 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:5728:379:1328:37
9:13
-
10K
6.21 mi11:52:3457:149:1328:37
9:13
0:00
15K
9.32 mi12:23:111:27:519:2630:37
9:51
+0:38
20K
12.43 mi12:52:191:56:599:2529:08
9:23
-0:28
Half
13.11 mi12:58:332:03:139:246:14
9:08
-0:15
25K
15.53 mi13:21:472:26:279:2623:14
9:35
+0:27
30K
18.64 mi13:52:042:56:449:2930:17
9:45
+0:10
20M
20.00 mi14:05:083:09:489:2913:04
9:37
-0:08
21M
21.00 mi14:15:073:19:479:319:59
9:59
+0:22
35K
21.75 mi14:22:033:26:439:306:56
9:16
-0:43
23M
23.00 mi14:33:433:38:239:3011:40
9:19
+0:03
24M
24.00 mi14:42:513:47:319:299:08
9:08
-0:11
40K
24.85 mi14:50:473:55:279:287:56
9:17
+0:09
25.2M
25.20 mi14:54:123:58:529:293:25
9:54
+0:37
Finish
26.22 mi15:03:184:07:589:289:06
8:56
-0:58

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

8:56 /mi

Average Pace

9:28 /mi

Slowest Pace

9:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:23:57

82% of race

Time at Steady Pace

44:01

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:27 /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 mi11:23:5728:379:1328:37
9:13
#21247
10K
6.21 mi11:52:3457:149:1328:37
9:13
#21440
15K
9.32 mi12:23:111:27:519:2630:37
9:51
#22067
20K
12.43 mi12:52:191:56:599:2529:08
9:23
#21844
Half
13.11 mi12:58:332:03:139:246:14
9:08
#21794
25K
15.53 mi13:21:472:26:279:2623:14
9:35
#21661
30K
18.64 mi13:52:042:56:449:2930:17
9:45
#21419
20M
20.00 mi14:05:083:09:489:2913:04
9:37
#21245
21M
21.00 mi14:15:073:19:479:319:59
9:59
#21070
35K
21.75 mi14:22:033:26:439:306:56
9:16
#20986
23M
23.00 mi14:33:433:38:239:3011:40
9:19
#20783
24M
24.00 mi14:42:513:47:319:299:08
9:08
#20666
40K
24.85 mi14:50:473:55:279:287:56
9:17
#20555
25.2M
25.20 mi14:54:123:58:529:293:25
9:54
#20480
Finish
26.22 mi15:03:184:07:589:289:06
8:56
#20388
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi212478500850023194(Top 87%)9444(Top 83%)9444(Top 1792%)
10K6.21 mi3.10 mi21440-1938552-528552-5221653(Top 81%)8631(Top 76%)8631(Top 1638%)
15K9.32 mi3.11 mi22067-6278873-3218873-32123194(Top 87%)9444(Top 83%)9444(Top 1792%)
20K12.43 mi3.11 mi21844+2238734+1398734+13921187(Top 80%)8336(Top 73%)8336(Top 1582%)
Half13.11 mi0.68 mi21794+508705+298705+2920977(Top 79%)8233(Top 72%)8233(Top 1562%)
25K15.53 mi2.42 mi21661+1338631+748631+7421098(Top 79%)8320(Top 73%)8320(Top 1579%)
30K18.64 mi3.11 mi21419+2428513+1188513+11820290(Top 76%)7933(Top 69%)7933(Top 1505%)
20M20.00 mi1.36 mi21245+1748442+718442+7119298(Top 72%)7459(Top 65%)7459(Top 1415%)
21M21.00 mi1.00 mi21070+1758362+808362+8018003(Top 68%)6768(Top 59%)6768(Top 1284%)
35K21.75 mi0.75 mi20986+848317+458317+4519055(Top 72%)7425(Top 65%)7425(Top 1409%)
23M23.00 mi1.25 mi20783+2038207+1108207+11017636(Top 66%)6660(Top 58%)6660(Top 1264%)
24M24.00 mi1.00 mi20666+1178157+508157+5017829(Top 67%)6822(Top 60%)6822(Top 1294%)
40K24.85 mi0.85 mi20555+1118107+508107+5017465(Top 66%)6674(Top 58%)6674(Top 1266%)
25.2M25.20 mi0.35 mi20480+758064+438064+4317110(Top 64%)6502(Top 57%)6502(Top 1234%)
Finish26.22 mi1.02 mi20388+928019+458019+4517656(Top 66%)6741(Top 59%)6741(Top 1279%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23194

Females

9444

F60-64

9444

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

21653

Females

8631

F60-64

8631

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23194

Females

9444

F60-64

9444

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21187

Females

8336

F60-64

8336

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

20977

Females

8233

F60-64

8233

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

21098

Females

8320

F60-64

8320

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20290

Females

7933

F60-64

7933

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

19298

Females

7459

F60-64

7459

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

18003

Females

6768

F60-64

6768

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

19055

Females

7425

F60-64

7425

35K→23M

21.8 - 23.0 mi

Top 66%
×5stories
+23ft-63ft

Overall

17636

Females

6660

F60-64

6660

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

17829

Females

6822

F60-64

6822

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17465

Females

6674

F60-64

6674

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17110

Females

6502

F60-64

6502

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

17656

Females

6741

F60-64

6741

Passing Analysis

Category:
Athletes Passed
2045
Passed By
1186
Net Change
+859
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21247
5K → 10K183376-193#21247#21440
10K → 15K28655-627#21440#22067
15K → 20K27653+223#22067#21844
20K → Half577+50#21844#21794
Half → 25K16734+133#21794#21661
25K → 30K26725+242#21661#21419
30K → 20M1828+174#21419#21245
20M → 21M1805+175#21245#21070
21M → 35K873+84#21070#20986
35K → 23M2085+203#20986#20783
23M → 24M1214+117#20783#20666
24M → 40K1143+111#20666#20555
40K → 25.2M750+75#20555#20480
25.2M → Finish1008+92#20480#20388
TOTALS20451186+859
📊

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