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BOSTON MARATHON 2023

Michelle Cooper- Klaassen

Bib: 30707•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
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
30:12
Rank: #22721
Start → 5K
30:12 | 9:43/mi
10K· 6.21 mi
59:06
Rank: #22360 (+361)
5K → 10K
28:54 | 9:18/mi
15K· 9.32 mi
1:28:10
Rank: #22177 (+183)
10K → 15K
29:04 | 9:21/mi
20K· 12.43 mi
1:57:11
Rank: #21896 (+281)
15K → 20K
29:01 | 9:20/mi
Half· 13.11 mi
2:03:29
Rank: #21859 (+37)
20K → Half
6:18 | 9:14/mi
25K· 15.53 mi
2:26:27
Rank: #21662 (+197)
Half → 25K
22:58 | 9:28/mi
30K· 18.64 mi
2:57:04
Rank: #21483 (+179)
25K → 30K
30:37 | 9:51/mi
20M
3:11:07
Rank: #21477 (+6)
30K → 20M
14:03 | 10:20/mi
21M
3:22:16
Rank: #21442 (+35)
20M → 21M
11:09 | 11:09/mi
35K· 21.75 mi
3:29:44
Rank: #21438 (+4)
21M → 35K
7:28 | 9:59/mi
23M
3:43:08
Rank: #21448 (-10)
35K → 23M
13:24 | 10:42/mi
24M
3:53:12
Rank: #21426 (+22)
23M → 24M
10:04 | 10:04/mi
40K· 24.85 mi
4:02:27
Rank: #21466 (-40)
24M → 40K
9:15 | 10:49/mi
25.2M
4:06:16
Rank: #21451 (+15)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:15:52
Rank: #21366 (+85)
25.2M → Finish
9:36 | 9:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:29
Pace9:25 /mi
2nd Half
Distance13.11 mi
Time2:12:23
Pace10:06 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1830:129:4330:12
9:43
-
10K
6.21 mi12:18:1259:069:3128:54
9:18
-0:25
15K
9.32 mi12:47:161:28:109:2829:04
9:21
+0:03
20K
12.43 mi13:16:171:57:119:2629:01
9:20
-0:01
Half
13.11 mi13:22:352:03:299:256:18
9:14
-0:06
25K
15.53 mi13:45:332:26:279:2622:58
9:28
+0:14
30K
18.64 mi14:16:102:57:049:3030:37
9:51
+0:23
20M
20.00 mi14:30:133:11:079:3314:03
10:20
+0:29
21M
21.00 mi14:41:223:22:169:3811:09
11:09
+0:49
35K
21.75 mi14:48:503:29:449:397:28
9:59
-1:10
23M
23.00 mi15:02:143:43:089:4213:24
10:42
+0:43
24M
24.00 mi15:12:183:53:129:4310:04
10:04
-0:38
40K
24.85 mi15:21:334:02:279:459:15
10:49
+0:45
25.2M
25.20 mi15:25:224:06:169:463:49
11:04
+0:15
Finish
26.22 mi15:34:584:15:529:469:36
9:25
-1:39

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

9:14 /mi

Average Pace

9:46 /mi

Slowest Pace

11:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:51

49% of race

Time at Steady Pace

1:18:21

31% of race

Time at Slower Pace

51:40

20% of race

Average Pace: 9:46 /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 mi11:49:1830:129:4330:12
9:43
#22721
10K
6.21 mi12:18:1259:069:3128:54
9:18
#22360
15K
9.32 mi12:47:161:28:109:2829:04
9:21
#22177
20K
12.43 mi13:16:171:57:119:2629:01
9:20
#21896
Half
13.11 mi13:22:352:03:299:256:18
9:14
#21859
25K
15.53 mi13:45:332:26:279:2622:58
9:28
#21662
30K
18.64 mi14:16:102:57:049:3030:37
9:51
#21483
20M
20.00 mi14:30:133:11:079:3314:03
10:20
#21477
21M
21.00 mi14:41:223:22:169:3811:09
11:09
#21442
35K
21.75 mi14:48:503:29:449:397:28
9:59
#21438
23M
23.00 mi15:02:143:43:089:4213:24
10:42
#21448
24M
24.00 mi15:12:183:53:129:4310:04
10:04
#21426
40K
24.85 mi15:21:334:02:279:459:15
10:49
#21466
25.2M
25.20 mi15:25:224:06:169:463:49
11:04
#21451
Finish
26.22 mi15:34:584:15:529:469:36
9:25
#21366
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi227219246924621836(Top 82%)8698(Top 76%)8698(Top 463%)
10K6.21 mi3.10 mi22360+3619028+2189028+21821954(Top 82%)8799(Top 77%)8799(Top 469%)
15K9.32 mi3.11 mi22177+1838925+1038925+10321836(Top 82%)8698(Top 76%)8698(Top 463%)
20K12.43 mi3.11 mi21896+2818776+1498776+14921077(Top 79%)8281(Top 72%)8281(Top 441%)
Half13.11 mi0.68 mi21859+378750+268750+2621316(Top 80%)8427(Top 74%)8427(Top 449%)
25K15.53 mi2.42 mi21662+1978632+1188632+11820762(Top 78%)8145(Top 71%)8145(Top 434%)
30K18.64 mi3.11 mi21483+1798546+868546+8620633(Top 78%)8129(Top 71%)8129(Top 433%)
20M20.00 mi1.36 mi21477+68554-88554-821387(Top 80%)8637(Top 76%)8637(Top 460%)
21M21.00 mi1.00 mi21442+358546+88546+821174(Top 80%)8559(Top 75%)8559(Top 456%)
35K21.75 mi0.75 mi21438+48555-98555-921247(Top 80%)8635(Top 76%)8635(Top 460%)
23M23.00 mi1.25 mi21448-108574-198574-1921781(Top 82%)8958(Top 78%)8958(Top 477%)
24M24.00 mi1.00 mi21426+228572+28572+221005(Top 79%)8556(Top 75%)8556(Top 456%)
40K24.85 mi0.85 mi21466-408607-358607-3521994(Top 83%)9154(Top 80%)9154(Top 487%)
25.2M25.20 mi0.35 mi21451+158604+38604+320666(Top 78%)8427(Top 74%)8427(Top 449%)
Finish26.22 mi1.02 mi21366+858566+388566+3819877(Top 75%)7934(Top 69%)7934(Top 422%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21836

Females

8698

F40-44

8698

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

21954

Females

8799

F40-44

8799

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21836

Females

8698

F40-44

8698

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

21077

Females

8281

F40-44

8281

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

21316

Females

8427

F40-44

8427

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

20762

Females

8145

F40-44

8145

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20633

Females

8129

F40-44

8129

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21387

Females

8637

F40-44

8637

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

21174

Females

8559

F40-44

8559

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21247

Females

8635

F40-44

8635

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21781

Females

8958

F40-44

8958

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

21005

Females

8556

F40-44

8556

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

21994

Females

9154

F40-44

9154

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20666

Females

8427

F40-44

8427

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

19877

Females

7934

F40-44

7934

Passing Analysis

Category:
Athletes Passed
1976
Passed By
621
Net Change
+1355
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22721
5K → 10K463102+361#22721#22360
10K → 15K26178+183#22360#22177
15K → 20K31332+281#22177#21896
20K → Half469+37#21896#21859
Half → 25K21518+197#21859#21662
25K → 30K22243+179#21662#21483
30K → 20M7165+6#21483#21477
20M → 21M7944+35#21477#21442
21M → 35K3733+4#21442#21438
35K → 23M5969-10#21438#21448
23M → 24M5331+22#21448#21426
24M → 40K3171-40#21426#21466
40K → 25.2M2712+15#21466#21451
25.2M → Finish9914+85#21451#21366
TOTALS1976621+1355
📊

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