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BOSTON MARATHON 2023

Molly Casey

Bib: 15268•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:18/mi
22:42
↑ 97↓ 3451.5%
10K· 6.21 mi
7:17/mi
45:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:16/mi
1:07:55
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:31:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:11/mi
1:36:12
↑ 19↓ 370.5%
25K· 15.53 mi
7:17/mi
1:53:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:18:49
↑ 181↓ 1480.2%
20M
7:41/mi
2:29:16
↑ 64↓ 500.2%
21M
8:12/mi
2:37:28
↑ 106↓ 241.6%
35K· 21.75 mi
7:24/mi
2:43:00
↑ 17↓ 861.7%
23M
7:38/mi
2:52:34
↑ 23↓ 630.6%
24M
8:20/mi
3:00:54
↓ 821.3%
40K· 24.85 mi
8:57/mi
3:08:33
↓ 200.3%
25.2M
8:54/mi
3:11:37
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:19:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:12
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:43:11
Pace7:52 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2922:427:1822:42
7:18
-
10K
6.21 mi11:15:0645:197:1822:37
7:17
-0:01
15K
9.32 mi11:37:421:07:557:1722:36
7:16
-0:01
20K
12.43 mi12:01:051:31:187:2123:23
7:32
+0:16
Half
13.11 mi12:05:591:36:127:204:54
7:11
-0:21
25K
15.53 mi12:23:381:53:517:2017:39
7:17
+0:06
30K
18.64 mi12:48:362:18:497:2724:58
8:02
+0:45
20M
20.00 mi12:59:032:29:167:2810:27
7:41
-0:21
21M
21.00 mi13:07:152:37:287:308:12
8:12
+0:31
35K
21.75 mi13:12:472:43:007:305:32
7:24
-0:48
23M
23.00 mi13:22:212:52:347:309:34
7:38
+0:14
24M
24.00 mi13:30:413:00:547:328:20
8:20
+0:42
40K
24.85 mi13:38:203:08:337:357:39
8:57
+0:37
25.2M
25.20 mi13:41:243:11:377:363:04
8:54
-0:03
Finish
26.22 mi13:49:103:19:237:377:46
7:37
-1:17

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

7:11 /mi

Average Pace

7:37 /mi

Slowest Pace

8:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:28

45% of race

Time at Steady Pace

56:42

28% of race

Time at Slower Pace

52:13

26% of race

Average Pace: 7:36 /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 mi10:52:2922:427:1822:42
7:18
#8152
10K
6.21 mi11:15:0645:197:1822:37
7:17
#8405
15K
9.32 mi11:37:421:07:557:1722:36
7:16
#8357
20K
12.43 mi12:01:051:31:187:2123:23
7:32
#8612
Half
13.11 mi12:05:591:36:127:204:54
7:11
#8562
25K
15.53 mi12:23:381:53:517:2017:39
7:17
#8301
30K
18.64 mi12:48:362:18:497:2724:58
8:02
#8732
20M
20.00 mi12:59:032:29:167:2810:27
7:41
#8664
21M
21.00 mi13:07:152:37:287:308:12
8:12
#8633
35K
21.75 mi13:12:472:43:007:305:32
7:24
#8604
23M
23.00 mi13:22:212:52:347:309:34
7:38
#8498
24M
24.00 mi13:30:413:00:547:328:20
8:20
#8701
40K
24.85 mi13:38:203:08:337:357:39
8:57
#8975
25.2M
25.20 mi13:41:243:11:377:363:04
8:54
#9012
Finish
26.22 mi13:49:103:19:237:377:46
7:37
#9008
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8152106810688369(Top 31%)1207(Top 11%)1207(Top 25%)
10K6.21 mi3.10 mi8405-2531181-1131181-1138732(Top 33%)1317(Top 12%)1317(Top 27%)
15K9.32 mi3.11 mi8357+481166+151166+158369(Top 31%)1207(Top 11%)1207(Top 25%)
20K12.43 mi3.11 mi8612-2551282-1161282-1169521(Top 36%)1695(Top 15%)1695(Top 35%)
Half13.11 mi0.68 mi8562+501260+221260+227815(Top 29%)1035(Top 9%)1035(Top 21%)
25K15.53 mi2.42 mi8301+2611189+711189+717179(Top 27%)903(Top 8%)903(Top 18%)
30K18.64 mi3.11 mi8732-4311383-1941383-19411188(Top 42%)2728(Top 24%)2728(Top 56%)
20M20.00 mi1.36 mi8664+681379+41379+48135(Top 31%)1456(Top 13%)1456(Top 30%)
21M21.00 mi1.00 mi8633+311386-71386-78641(Top 32%)1770(Top 15%)1770(Top 36%)
35K21.75 mi0.75 mi8604+291389-31389-37819(Top 29%)1427(Top 12%)1427(Top 29%)
23M23.00 mi1.25 mi8498+1061370+191370+197396(Top 28%)1338(Top 12%)1338(Top 27%)
24M24.00 mi1.00 mi8701-2031471-1011471-10113432(Top 50%)4342(Top 38%)4342(Top 89%)
40K24.85 mi0.85 mi8975-2741603-1321603-13215863(Top 60%)5761(Top 50%)5761(Top 118%)
25.2M25.20 mi0.35 mi9012-371622-191622-1911912(Top 45%)3650(Top 32%)3650(Top 75%)
Finish26.22 mi1.02 mi9008+41651-291651-299431(Top 35%)2436(Top 21%)2436(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8369

Females

1207

F18-39

1207

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

8732

Females

1317

F18-39

1317

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8369

Females

1207

F18-39

1207

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9521

Females

1695

F18-39

1695

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

7815

Females

1035

F18-39

1035

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7179

Females

903

F18-39

903

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11188

Females

2728

F18-39

2728

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8135

Females

1456

F18-39

1456

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

8641

Females

1770

F18-39

1770

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7819

Females

1427

F18-39

1427

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7396

Females

1338

F18-39

1338

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

13432

Females

4342

F18-39

4342

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15863

Females

5761

F18-39

5761

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11912

Females

3650

F18-39

3650

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9431

Females

2436

F18-39

2436

Passing Analysis

Category:
Athletes Passed
1242
Passed By
2098
Net Change
-856
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8152
5K → 10K118371-253#8152#8405
10K → 15K164116+48#8405#8357
15K → 20K65320-255#8357#8612
20K → Half566+50#8612#8562
Half → 25K2665+261#8562#8301
25K → 30K59490-431#8301#8732
30K → 20M10941+68#8732#8664
20M → 21M8554+31#8664#8633
21M → 35K5526+29#8633#8604
35K → 23M13832+106#8604#8498
23M → 24M28231-203#8498#8701
24M → 40K12286-274#8701#8975
40K → 25.2M1552-37#8975#9012
25.2M → Finish7268+4#9012#9008
TOTALS12422098-856
📊

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