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BOSTON MARATHON 2023

Melissa Lahey

Bib: 20633•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:02
Rank: #18908
Start → 5K
8:42/mi
27:02 split
10K· 6.21 mi
53:45
Rank: #18806 (+102)
5K → 10K
8:36/mi
26:43 split
15K· 9.32 mi
1:20:47
Rank: #18857 (-51)
10K → 15K
8:42/mi
27:02 split
20K· 12.43 mi
1:48:18
Rank: #18874 (-17)
15K → 20K
8:51/mi
27:31 split
Half· 13.11 mi
1:54:20
Rank: #18926 (-52)
20K → Half
8:51/mi
6:02 split
25K· 15.53 mi
2:16:12
Rank: #18936 (-10)
Half → 25K
9:01/mi
21:52 split
30K· 18.64 mi
2:45:17
Rank: #18930 (+6)
25K → 30K
9:22/mi
29:05 split
20M
2:58:11
Rank: #18926 (+4)
30K → 20M
9:30/mi
12:54 split
21M
3:07:59
Rank: #18819 (+107)
20M → 21M
9:48/mi
9:48 split
35K· 21.75 mi
3:14:52
Rank: #18811 (+8)
21M → 35K
9:12/mi
6:53 split
23M
3:26:51
Rank: #18789 (+22)
35K → 23M
9:34/mi
11:59 split
24M
3:36:27
Rank: #18835 (-46)
23M → 24M
9:36/mi
9:36 split
40K· 24.85 mi
3:44:46
Rank: #18869 (-34)
24M → 40K
9:44/mi
8:19 split
25.2M
3:48:13
Rank: #18842 (+27)
40K → 25.2M
10:00/mi
3:27 split
Finish· 26.22 mi
3:57:41
Rank: #18886 (-44)
25.2M → Finish
9:17/mi
9:28 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:20
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:03:21
Pace9:25 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3527:028:4227:02
8:42
-
10K
6.21 mi11:46:1853:458:3926:43
8:36
-0:06
15K
9.32 mi12:13:201:20:478:4027:02
8:42
+0:06
20K
12.43 mi12:40:511:48:188:4327:31
8:51
+0:09
Half
13.11 mi12:46:531:54:208:436:02
8:51
0:00
25K
15.53 mi13:08:452:16:128:4621:52
9:01
+0:10
30K
18.64 mi13:37:502:45:178:5229:05
9:22
+0:21
20M
20.00 mi13:50:442:58:118:5512:54
9:30
+0:08
21M
21.00 mi14:00:323:07:598:579:48
9:48
+0:18
35K
21.75 mi14:07:253:14:528:586:53
9:12
-0:36
23M
23.00 mi14:19:243:26:519:0011:59
9:34
+0:22
24M
24.00 mi14:29:003:36:279:019:36
9:36
+0:02
40K
24.85 mi14:37:193:44:469:038:19
9:44
+0:08
25.2M
25.20 mi14:40:463:48:139:033:27
10:00
+0:16
Finish
26.22 mi14:50:143:57:419:049:28
9:17
-0:43

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

8:36 /mi

Average Pace

9:04 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:38

76% of race

Time at Steady Pace

56:03

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:04 /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 mi11:19:3527:028:4227:02
8:42
#18908
10K
6.21 mi11:46:1853:458:3926:43
8:36
#18806
15K
9.32 mi12:13:201:20:478:4027:02
8:42
#18857
20K
12.43 mi12:40:511:48:188:4327:31
8:51
#18874
Half
13.11 mi12:46:531:54:208:436:02
8:51
#18926
25K
15.53 mi13:08:452:16:128:4621:52
9:01
#18936
30K
18.64 mi13:37:502:45:178:5229:05
9:22
#18930
20M
20.00 mi13:50:442:58:118:5512:54
9:30
#18926
21M
21.00 mi14:00:323:07:598:579:48
9:48
#18819
35K
21.75 mi14:07:253:14:528:586:53
9:12
#18811
23M
23.00 mi14:19:243:26:519:0011:59
9:34
#18789
24M
24.00 mi14:29:003:36:279:019:36
9:36
#18835
40K
24.85 mi14:37:193:44:469:038:19
9:44
#18869
25.2M
25.20 mi14:40:463:48:139:033:27
10:00
#18842
Finish
26.22 mi14:50:143:57:419:049:28
9:17
#18886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi189087145714518994(Top 71%)7097(Top 62%)7097(Top 391%)
10K6.21 mi3.10 mi18806+1027017+1287017+12818854(Top 71%)6995(Top 61%)6995(Top 385%)
15K9.32 mi3.11 mi18857-517042-257042-2518994(Top 71%)7097(Top 62%)7097(Top 391%)
20K12.43 mi3.11 mi18874-177043-17043-118989(Top 71%)7081(Top 62%)7081(Top 390%)
Half13.11 mi0.68 mi18926-527078-357078-3519742(Top 74%)7513(Top 66%)7513(Top 413%)
25K15.53 mi2.42 mi18936-107085-77085-719062(Top 72%)7166(Top 63%)7166(Top 394%)
30K18.64 mi3.11 mi18930+67098-137098-1318875(Top 71%)7130(Top 62%)7130(Top 392%)
20M20.00 mi1.36 mi18926+47118-207118-2018840(Top 71%)7211(Top 63%)7211(Top 397%)
21M21.00 mi1.00 mi18819+1077066+527066+5217281(Top 65%)6358(Top 56%)6358(Top 350%)
35K21.75 mi0.75 mi18811+87063+37063+318762(Top 70%)7252(Top 63%)7252(Top 399%)
23M23.00 mi1.25 mi18789+227066-37066-318621(Top 70%)7198(Top 63%)7198(Top 396%)
24M24.00 mi1.00 mi18835-467109-437109-4319577(Top 74%)7747(Top 68%)7747(Top 426%)
40K24.85 mi0.85 mi18869-347129-207129-2019125(Top 72%)7552(Top 66%)7552(Top 416%)
25.2M25.20 mi0.35 mi18842+277124+57124+517460(Top 66%)6693(Top 59%)6693(Top 368%)
Finish26.22 mi1.02 mi18886-447144-207144-2019328(Top 73%)7628(Top 67%)7628(Top 420%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

18994

Females

7097

F45-49

7097

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

18854

Females

6995

F45-49

6995

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

18994

Females

7097

F45-49

7097

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18989

Females

7081

F45-49

7081

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19742

Females

7513

F45-49

7513

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19062

Females

7166

F45-49

7166

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

18875

Females

7130

F45-49

7130

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

18840

Females

7211

F45-49

7211

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17281

Females

6358

F45-49

6358

21M→35K

21.0 - 21.8 mi

Top 70%
×7stories
+17ft-86ft

Overall

18762

Females

7252

F45-49

7252

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

18621

Females

7198

F45-49

7198

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19577

Females

7747

F45-49

7747

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19125

Females

7552

F45-49

7552

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17460

Females

6693

F45-49

6693

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19328

Females

7628

F45-49

7628

Passing Analysis

Category:
Athletes Passed
1548
Passed By
1526
Net Change
+22
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18908
5K → 10K415313+102#18908#18806
10K → 15K160211-51#18806#18857
15K → 20K159176-17#18857#18874
20K → Half1264-52#18874#18926
Half → 25K123133-10#18926#18936
25K → 30K170164+6#18936#18930
30K → 20M8783+4#18930#18926
20M → 21M13629+107#18926#18819
21M → 35K5042+8#18819#18811
35K → 23M8765+22#18811#18789
23M → 24M4793-46#18789#18835
24M → 40K3670-34#18835#18869
40K → 25.2M4114+27#18869#18842
25.2M → Finish2569-44#18842#18886
TOTALS15481526+22
📊

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