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BOSTON MARATHON 2023

Katherine Mcclain

Bib: 8938•F

KY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:18
Rank: #5205
Start → 5K
21:18 | 6:51/mi
10K· 6.21 mi
42:33
Rank: #5409 (-204)
5K → 10K
21:15 | 6:50/mi
15K· 9.32 mi
1:03:46
Rank: #5390 (+19)
10K → 15K
21:13 | 6:50/mi
20K· 12.43 mi
1:25:15
Rank: #5416 (-26)
15K → 20K
21:29 | 6:55/mi
Half· 13.11 mi
1:29:55
Rank: #5425 (-9)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:35
Rank: #5291 (+134)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:08:40
Rank: #5204 (+87)
25K → 30K
22:05 | 7:06/mi
20M
2:18:31
Rank: #5197 (+7)
30K → 20M
9:51 | 7:15/mi
21M
2:26:34
Rank: #5280 (-83)
20M → 21M
8:03 | 8:03/mi
35K· 21.75 mi
2:31:56
Rank: #5298 (-18)
21M → 35K
5:22 | 7:10/mi
23M
2:42:03
Rank: #5506 (-208)
35K → 23M
10:07 | 8:05/mi
24M
2:49:45
Rank: #5584 (-78)
23M → 24M
7:42 | 7:42/mi
40K· 24.85 mi
2:56:27
Rank: #5634 (-50)
24M → 40K
6:42 | 7:50/mi
25.2M
2:59:22
Rank: #5663 (-29)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:07:09
Rank: #5739 (-76)
25.2M → Finish
7:47 | 7:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:55
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:37:14
Pace7:25 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2121:186:5121:18
6:51
-
10K
6.21 mi11:07:3642:336:5121:15
6:50
-0:01
15K
9.32 mi11:28:491:03:466:5021:13
6:50
0:00
20K
12.43 mi11:50:181:25:156:5221:29
6:55
+0:05
Half
13.11 mi11:54:581:29:556:524:40
6:50
-0:05
25K
15.53 mi12:11:381:46:356:5216:40
6:52
+0:02
30K
18.64 mi12:33:432:08:406:5422:05
7:06
+0:14
20M
20.00 mi12:43:342:18:316:569:51
7:15
+0:09
21M
21.00 mi12:51:372:26:346:598:03
8:03
+0:48
35K
21.75 mi12:56:592:31:566:595:22
7:10
-0:53
23M
23.00 mi13:07:062:42:037:0310:07
8:05
+0:55
24M
24.00 mi13:14:482:49:457:047:42
7:42
-0:23
40K
24.85 mi13:21:302:56:277:066:42
7:50
+0:08
25.2M
25.20 mi13:24:252:59:227:072:55
8:27
+0:37
Finish
26.22 mi13:32:123:07:097:097:47
7:38
-0:49

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

6:50 /mi

Average Pace

7:09 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:06

45% of race

Time at Steady Pace

58:47

31% of race

Time at Slower Pace

43:16

23% of race

Average Pace: 7:08 /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 mi10:46:2121:186:5121:18
6:51
#5205
10K
6.21 mi11:07:3642:336:5121:15
6:50
#5409
15K
9.32 mi11:28:491:03:466:5021:13
6:50
#5390
20K
12.43 mi11:50:181:25:156:5221:29
6:55
#5416
Half
13.11 mi11:54:581:29:556:524:40
6:50
#5425
25K
15.53 mi12:11:381:46:356:5216:40
6:52
#5291
30K
18.64 mi12:33:432:08:406:5422:05
7:06
#5204
20M
20.00 mi12:43:342:18:316:569:51
7:15
#5197
21M
21.00 mi12:51:372:26:346:598:03
8:03
#5280
35K
21.75 mi12:56:592:31:566:595:22
7:10
#5298
23M
23.00 mi13:07:062:42:037:0310:07
8:05
#5506
24M
24.00 mi13:14:482:49:457:047:42
7:42
#5584
40K
24.85 mi13:21:302:56:277:066:42
7:50
#5634
25.2M
25.20 mi13:24:252:59:227:072:55
8:27
#5663
Finish
26.22 mi13:32:123:07:097:097:47
7:38
#5739
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi52053763765403(Top 20%)415(Top 4%)415(Top 8%)
10K6.21 mi3.10 mi5409-204407-31407-315675(Top 21%)468(Top 4%)468(Top 10%)
15K9.32 mi3.11 mi5390+19402+5402+55403(Top 20%)415(Top 4%)415(Top 8%)
20K12.43 mi3.11 mi5416-26407-5407-55460(Top 21%)422(Top 4%)422(Top 9%)
Half13.11 mi0.68 mi5425-9405+2405+25680(Top 21%)455(Top 4%)455(Top 9%)
25K15.53 mi2.42 mi5291+134387+18387+184792(Top 18%)350(Top 3%)350(Top 7%)
30K18.64 mi3.11 mi5204+87384+3384+34993(Top 19%)403(Top 4%)403(Top 8%)
20M20.00 mi1.36 mi5197+7387-3387-35387(Top 20%)544(Top 5%)544(Top 11%)
21M21.00 mi1.00 mi5280-83410-23410-237686(Top 29%)1371(Top 12%)1371(Top 28%)
35K21.75 mi0.75 mi5298-18421-11421-116394(Top 24%)873(Top 8%)873(Top 18%)
23M23.00 mi1.25 mi5506-208459-38459-3810308(Top 39%)2652(Top 23%)2652(Top 54%)
24M24.00 mi1.00 mi5584-78489-30489-309092(Top 34%)2136(Top 19%)2136(Top 44%)
40K24.85 mi0.85 mi5634-50508-19508-198914(Top 33%)2130(Top 19%)2130(Top 44%)
25.2M25.20 mi0.35 mi5663-29524-16524-169274(Top 35%)2333(Top 20%)2333(Top 48%)
Finish26.22 mi1.02 mi5739-76557-33557-339554(Top 36%)2484(Top 22%)2484(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5403

Females

415

F18-39

415

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5675

Females

468

F18-39

468

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5403

Females

415

F18-39

415

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5460

Females

422

F18-39

422

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5680

Females

455

F18-39

455

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4792

Females

350

F18-39

350

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

4993

Females

403

F18-39

403

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5387

Females

544

F18-39

544

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7686

Females

1371

F18-39

1371

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6394

Females

873

F18-39

873

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10308

Females

2652

F18-39

2652

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9092

Females

2136

F18-39

2136

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8914

Females

2130

F18-39

2130

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9274

Females

2333

F18-39

2333

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9554

Females

2484

F18-39

2484

Passing Analysis

Category:
Athletes Passed
949
Passed By
1483
Net Change
-534
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5205
5K → 10K116320-204#5205#5409
10K → 15K132113+19#5409#5390
15K → 20K95121-26#5390#5416
20K → Half1524-9#5416#5425
Half → 25K16329+134#5425#5291
25K → 30K17083+87#5291#5204
30K → 20M6962+7#5204#5197
20M → 21M33116-83#5197#5280
21M → 35K3048-18#5280#5298
35K → 23M25233-208#5298#5506
23M → 24M26104-78#5506#5584
24M → 40K2979-50#5584#5634
40K → 25.2M1039-29#5634#5663
25.2M → Finish36112-76#5663#5739
TOTALS9491483-534
📊

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