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BOSTON MARATHON 2023

Margaret Irvin

Bib: 16476•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 37%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:02
Rank: #16738
Start → 5K
26:02 | 8:23/mi
10K· 6.21 mi
52:47
Rank: #17879 (-1141)
5K → 10K
26:45 | 8:37/mi
15K· 9.32 mi
1:18:34
Rank: #17390 (+489)
10K → 15K
25:47 | 8:18/mi
20K· 12.43 mi
1:48:33
Rank: #18992 (-1602)
15K → 20K
29:59 | 9:39/mi
Half· 13.11 mi
1:54:08
Rank: #18828 (+164)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:14:14
Rank: #18212 (+616)
Half → 25K
20:06 | 8:17/mi
30K· 18.64 mi
2:41:25
Rank: #17711 (+501)
25K → 30K
27:11 | 8:45/mi
20M
2:53:10
Rank: #17471 (+240)
30K → 20M
11:45 | 8:39/mi
21M
3:01:49
Rank: #17143 (+328)
20M → 21M
8:39 | 8:39/mi
35K· 21.75 mi
3:07:49
Rank: #16971 (+172)
21M → 35K
6:00 | 8:01/mi
23M
3:18:01
Rank: #16636 (+335)
35K → 23M
10:12 | 8:09/mi
24M
3:26:00
Rank: #16405 (+231)
23M → 24M
7:59 | 7:59/mi
40K· 24.85 mi
3:32:59
Rank: #16197 (+208)
24M → 40K
6:59 | 8:10/mi
25.2M
3:36:44
Rank: #16289 (-92)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
3:44:24
Rank: #16023 (+266)
25.2M → Finish
7:40 | 7:31/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:54:08
Pace8:42 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:16
Pace8:25 /mi
📊Negative Split: 3.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4026:028:2326:02
8:23
-
10K
6.21 mi11:47:2552:478:3026:45
8:37
+0:14
15K
9.32 mi12:13:121:18:348:2625:47
8:18
-0:19
20K
12.43 mi12:43:111:48:338:4429:59
9:39
+1:21
Half
13.11 mi12:48:461:54:088:425:35
8:11
-1:28
25K
15.53 mi13:08:522:14:148:3820:06
8:17
+0:06
30K
18.64 mi13:36:032:41:258:4027:11
8:45
+0:28
20M
20.00 mi13:47:482:53:108:3911:45
8:39
-0:06
21M
21.00 mi13:56:273:01:498:398:39
8:39
0:00
35K
21.75 mi14:02:273:07:498:386:00
8:01
-0:38
23M
23.00 mi14:12:393:18:018:3710:12
8:09
+0:08
24M
24.00 mi14:20:383:26:008:357:59
7:59
-0:10
40K
24.85 mi14:27:373:32:598:346:59
8:10
+0:11
25.2M
25.20 mi14:31:223:36:448:363:45
10:52
+2:42
Finish
26.22 mi14:39:023:44:248:347:40
7:31
-3:21

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

7:31 /mi

Average Pace

8:34 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:40

3% of race

Time at Steady Pace

2:35:49

69% of race

Time at Slower Pace

1:00:55

27% of race

Average Pace: 8:34 /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 mi11:20:4026:028:2326:02
8:23
#16738
10K
6.21 mi11:47:2552:478:3026:45
8:37
#17879
15K
9.32 mi12:13:121:18:348:2625:47
8:18
#17390
20K
12.43 mi12:43:111:48:338:4429:59
9:39
#18992
Half
13.11 mi12:48:461:54:088:425:35
8:11
#18828
25K
15.53 mi13:08:522:14:148:3820:06
8:17
#18212
30K
18.64 mi13:36:032:41:258:4027:11
8:45
#17711
20M
20.00 mi13:47:482:53:108:3911:45
8:39
#17471
21M
21.00 mi13:56:273:01:498:398:39
8:39
#17143
35K
21.75 mi14:02:273:07:498:386:00
8:01
#16971
23M
23.00 mi14:12:393:18:018:3710:12
8:09
#16636
24M
24.00 mi14:20:383:26:008:357:59
7:59
#16405
40K
24.85 mi14:27:373:32:598:346:59
8:10
#16197
25.2M
25.20 mi14:31:223:36:448:363:45
10:52
#16289
Finish
26.22 mi14:39:023:44:248:347:40
7:31
#16023
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi167385753575316536(Top 62%)5615(Top 49%)5615(Top 299%)
10K6.21 mi3.10 mi17879-11416453-7006453-70018893(Top 71%)7020(Top 61%)7020(Top 374%)
15K9.32 mi3.11 mi17390+4896149+3046149+30416536(Top 62%)5615(Top 49%)5615(Top 299%)
20K12.43 mi3.11 mi18992-16027118-9697118-96922007(Top 83%)8800(Top 77%)8800(Top 469%)
Half13.11 mi0.68 mi18828+1647020+987020+9815759(Top 59%)5165(Top 45%)5165(Top 275%)
25K15.53 mi2.42 mi18212+6166654+3666654+36614908(Top 56%)4775(Top 42%)4775(Top 254%)
30K18.64 mi3.11 mi17711+5016383+2716383+27115785(Top 59%)5376(Top 47%)5376(Top 286%)
20M20.00 mi1.36 mi17471+2406258+1256258+12514584(Top 55%)4762(Top 42%)4762(Top 254%)
21M21.00 mi1.00 mi17143+3286075+1836075+18311405(Top 43%)3103(Top 27%)3103(Top 165%)
35K21.75 mi0.75 mi16971+1725973+1025973+10212355(Top 46%)3646(Top 32%)3646(Top 194%)
23M23.00 mi1.25 mi16636+3355811+1625811+16210857(Top 41%)2959(Top 26%)2959(Top 158%)
24M24.00 mi1.00 mi16405+2315692+1195692+11911176(Top 42%)3200(Top 28%)3200(Top 170%)
40K24.85 mi0.85 mi16197+2085593+995593+9911209(Top 42%)3279(Top 29%)3279(Top 175%)
25.2M25.20 mi0.35 mi16289-925652-595652-5920170(Top 76%)8139(Top 71%)8139(Top 433%)
Finish26.22 mi1.02 mi16023+2665504+1485504+1488777(Top 33%)2157(Top 19%)2157(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16536

Females

5615

F40-44

5615

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

18893

Females

7020

F40-44

7020

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16536

Females

5615

F40-44

5615

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

22007

Females

8800

F40-44

8800

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15759

Females

5165

F40-44

5165

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

14908

Females

4775

F40-44

4775

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

15785

Females

5376

F40-44

5376

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14584

Females

4762

F40-44

4762

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11405

Females

3103

F40-44

3103

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12355

Females

3646

F40-44

3646

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10857

Females

2959

F40-44

2959

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11176

Females

3200

F40-44

3200

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11209

Females

3279

F40-44

3279

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20170

Females

8139

F40-44

8139

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8777

Females

2157

F40-44

2157

Passing Analysis

Category:
Athletes Passed
3698
Passed By
2983
Net Change
+715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16738
5K → 10K521193-1141#16738#17879
10K → 15K53950+489#17879#17390
15K → 20K121614-1602#17390#18992
20K → Half1640+164#18992#18828
Half → 25K6171+616#18828#18212
25K → 30K5109+501#18212#17711
30K → 20M2455+240#17711#17471
20M → 21M3291+328#17471#17143
21M → 35K1742+172#17143#16971
35K → 23M3383+335#16971#16636
23M → 24M2343+231#16636#16405
24M → 40K2091+208#16405#16197
40K → 25.2M799-92#16197#16289
25.2M → Finish2682+266#16289#16023
TOTALS36982983+715
📊

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