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BOSTON MARATHON 2023

Margaret Legro

Bib: 13805•F

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Division (F18-39)
#0 / 4884
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:13
Rank: #4970
Start → 5K
6:50/mi
21:13 split
10K· 6.21 mi
42:20
Rank: #5077 (-107)
5K → 10K
6:48/mi
21:07 split
15K· 9.32 mi
1:03:19
Rank: #4945 (+132)
10K → 15K
6:45/mi
20:59 split
20K· 12.43 mi
1:24:26
Rank: #4791 (+154)
15K → 20K
6:48/mi
21:07 split
Half· 13.11 mi
1:28:58
Rank: #4729 (+62)
20K → Half
6:39/mi
4:32 split
25K· 15.53 mi
1:45:35
Rank: #4669 (+60)
Half → 25K
6:51/mi
16:37 split
30K· 18.64 mi
2:07:09
Rank: #4497 (+172)
25K → 30K
6:56/mi
21:34 split
20M
2:16:46
Rank: #4496 (+1)
30K → 20M
7:05/mi
9:37 split
21M
2:24:19
Rank: #4523 (-27)
20M → 21M
7:33/mi
7:33 split
35K· 21.75 mi
2:29:13
Rank: #4414 (+109)
21M → 35K
6:33/mi
4:54 split
23M
2:38:16
Rank: #4466 (-52)
35K → 23M
7:14/mi
9:03 split
24M
2:45:27
Rank: #4517 (-51)
23M → 24M
7:11/mi
7:11 split
40K· 24.85 mi
2:51:29
Rank: #4474 (+43)
24M → 40K
7:03/mi
6:02 split
25.2M
2:54:09
Rank: #4473 (+1)
40K → 25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
3:01:17
Rank: #4477 (-4)
25.2M → Finish
7:00/mi
7:08 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:58
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:32:19
Pace7:03 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0321:136:5021:13
6:50
-
10K
6.21 mi11:10:1042:206:4921:07
6:48
-0:02
15K
9.32 mi11:31:091:03:196:4820:59
6:45
-0:03
20K
12.43 mi11:52:161:24:266:4821:07
6:48
+0:03
Half
13.11 mi11:56:481:28:586:474:32
6:39
-0:09
25K
15.53 mi12:13:251:45:356:4816:37
6:51
+0:12
30K
18.64 mi12:34:592:07:096:4921:34
6:56
+0:05
20M
20.00 mi12:44:362:16:466:509:37
7:05
+0:09
21M
21.00 mi12:52:092:24:196:527:33
7:33
+0:28
35K
21.75 mi12:57:032:29:136:524:54
6:33
-1:00
23M
23.00 mi13:06:062:38:166:539:03
7:14
+0:41
24M
24.00 mi13:13:172:45:276:547:11
7:11
-0:03
40K
24.85 mi13:19:192:51:296:546:02
7:03
-0:08
25.2M
25.20 mi13:21:592:54:096:552:40
7:44
+0:41
Finish
26.22 mi13:29:073:01:176:557:08
7:00
-0:44

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

6:33 /mi

Average Pace

6:55 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:01

89% of race

Time at Steady Pace

16:36

9% of race

Time at Slower Pace

2:40

1% of race

Average Pace: 6:55 /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 mi10:49:0321:136:5021:13
6:50
#4970
10K
6.21 mi11:10:1042:206:4921:07
6:48
#5077
15K
9.32 mi11:31:091:03:196:4820:59
6:45
#4945
20K
12.43 mi11:52:161:24:266:4821:07
6:48
#4791
Half
13.11 mi11:56:481:28:586:474:32
6:39
#4729
25K
15.53 mi12:13:251:45:356:4816:37
6:51
#4669
30K
18.64 mi12:34:592:07:096:4921:34
6:56
#4497
20M
20.00 mi12:44:362:16:466:509:37
7:05
#4496
21M
21.00 mi12:52:092:24:196:527:33
7:33
#4523
35K
21.75 mi12:57:032:29:136:524:54
6:33
#4414
23M
23.00 mi13:06:062:38:166:539:03
7:14
#4466
24M
24.00 mi13:13:172:45:276:547:11
7:11
#4517
40K
24.85 mi13:19:192:51:296:546:02
7:03
#4474
25.2M
25.20 mi13:21:592:54:096:552:40
7:44
#4473
Finish
26.22 mi13:29:073:01:176:557:08
7:00
#4477
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi49703513514675(Top 18%)306(Top 3%)306(Top 6%)
10K6.21 mi3.10 mi5077-107366-15366-155291(Top 20%)395(Top 3%)395(Top 8%)
15K9.32 mi3.11 mi4945+132345+21345+214675(Top 18%)306(Top 3%)306(Top 6%)
20K12.43 mi3.11 mi4791+154321+24321+244430(Top 17%)293(Top 3%)293(Top 6%)
Half13.11 mi0.68 mi4729+62317+4317+43924(Top 15%)236(Top 2%)236(Top 5%)
25K15.53 mi2.42 mi4669+60316+1316+14632(Top 17%)320(Top 3%)320(Top 7%)
30K18.64 mi3.11 mi4497+172292+24292+243964(Top 15%)256(Top 2%)256(Top 5%)
20M20.00 mi1.36 mi4496+1299-7299-74502(Top 17%)361(Top 3%)361(Top 7%)
21M21.00 mi1.00 mi4523-272992994844(Top 18%)471(Top 4%)471(Top 10%)
35K21.75 mi0.75 mi4414+109294+5294+52761(Top 10%)168(Top 1%)168(Top 3%)
23M23.00 mi1.25 mi4466-52297-3297-34952(Top 19%)516(Top 5%)516(Top 11%)
24M24.00 mi1.00 mi4517-51303-6303-65670(Top 21%)766(Top 7%)766(Top 16%)
40K24.85 mi0.85 mi4474+43302+1302+14175(Top 16%)443(Top 4%)443(Top 9%)
25.2M25.20 mi0.35 mi4473+1304-2304-25084(Top 19%)729(Top 6%)729(Top 15%)
Finish26.22 mi1.02 mi4477-4309-5309-55232(Top 20%)792(Top 7%)792(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

4675

Females

306

F18-39

306

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5291

Females

395

F18-39

395

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

4675

Females

306

F18-39

306

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4430

Females

293

F18-39

293

20K→Half

12.4 - 13.1 mi

Top 15%
×2story building
+19ft-37ft

Overall

3924

Females

236

F18-39

236

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4632

Females

320

F18-39

320

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

3964

Females

256

F18-39

256

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4502

Females

361

F18-39

361

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4844

Females

471

F18-39

471

21M→35K

21.0 - 21.8 mi

Top 10%
×7story building
+17ft-86ft

Overall

2761

Females

168

F18-39

168

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

4952

Females

516

F18-39

516

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

5670

Females

766

F18-39

766

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4175

Females

443

F18-39

443

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5084

Females

729

F18-39

729

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5232

Females

792

F18-39

792

Passing Analysis

Category:
Athletes Passed
1394
Passed By
901
Net Change
+493
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4970
5K → 10K147254-107#4970#5077
10K → 15K19159+132#5077#4945
15K → 20K18834+154#4945#4791
20K → Half708+62#4791#4729
Half → 25K13373+60#4729#4669
25K → 30K21442+172#4669#4497
30K → 20M6463+1#4497#4496
20M → 21M5178-27#4496#4523
21M → 35K1101+109#4523#4414
35K → 23M60112-52#4414#4466
23M → 24M2980-51#4466#4517
24M → 40K6724+43#4517#4474
40K → 25.2M1918+1#4474#4473
25.2M → Finish5155-4#4473#4477
TOTALS1394901+493
📊

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