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BOSTON MARATHON 2023

Leah Krause

Bib: 17110•F

MO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:29
Rank: #13081
Start → 5K
24:29 | 7:53/mi
10K· 6.21 mi
47:46
Rank: #11691 (+1390)
5K → 10K
23:17 | 7:30/mi
15K· 9.32 mi
1:10:51
Rank: #10944 (+747)
10K → 15K
23:05 | 7:26/mi
20K· 12.43 mi
1:34:31
Rank: #10761 (+183)
15K → 20K
23:40 | 7:37/mi
Half· 13.11 mi
1:39:33
Rank: #10680 (+81)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:58:06
Rank: #10498 (+182)
Half → 25K
18:33 | 7:39/mi
30K· 18.64 mi
2:21:59
Rank: #10106 (+392)
25K → 30K
23:53 | 7:41/mi
20M
2:32:48
Rank: #10076 (+30)
30K → 20M
10:49 | 7:58/mi
21M
2:40:42
Rank: #9829 (+247)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:46:05
Rank: #9700 (+129)
21M → 35K
5:23 | 7:12/mi
23M
2:56:00
Rank: #9629 (+71)
35K → 23M
9:55 | 7:55/mi
24M
3:03:53
Rank: #9628 (+1)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:10:54
Rank: #9672 (-44)
24M → 40K
7:01 | 8:12/mi
25.2M
3:13:55
Rank: #9684 (-12)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:21:36
Rank: #9619 (+65)
25.2M → Finish
7:41 | 7:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:33
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:42:03
Pace7:47 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5624:297:5324:29
7:53
-
10K
6.21 mi11:38:1347:467:4123:17
7:30
-0:23
15K
9.32 mi12:01:181:10:517:3623:05
7:26
-0:04
20K
12.43 mi12:24:581:34:317:3623:40
7:37
+0:11
Half
13.11 mi12:30:001:39:337:365:02
7:23
-0:14
25K
15.53 mi12:48:331:58:067:3618:33
7:39
+0:16
30K
18.64 mi13:12:262:21:597:3723:53
7:41
+0:02
20M
20.00 mi13:23:152:32:487:3810:49
7:58
+0:17
21M
21.00 mi13:31:092:40:427:397:54
7:54
-0:04
35K
21.75 mi13:36:322:46:057:385:23
7:12
-0:42
23M
23.00 mi13:46:272:56:007:399:55
7:55
+0:43
24M
24.00 mi13:54:203:03:537:407:53
7:53
-0:02
40K
24.85 mi14:01:213:10:547:417:01
8:12
+0:19
25.2M
25.20 mi14:04:223:13:557:423:01
8:45
+0:33
Finish
26.22 mi14:12:033:21:367:427:41
7:32
-1:13

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

7:12 /mi

Average Pace

7:42 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

56:47

28% of race

Time at Steady Pace

1:13:47

37% of race

Time at Slower Pace

1:11:02

35% of race

Average Pace: 7:41 /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 mi11:14:5624:297:5324:29
7:53
#13081
10K
6.21 mi11:38:1347:467:4123:17
7:30
#11691
15K
9.32 mi12:01:181:10:517:3623:05
7:26
#10944
20K
12.43 mi12:24:581:34:317:3623:40
7:37
#10761
Half
13.11 mi12:30:001:39:337:365:02
7:23
#10680
25K
15.53 mi12:48:331:58:067:3618:33
7:39
#10498
30K
18.64 mi13:12:262:21:597:3723:53
7:41
#10106
20M
20.00 mi13:23:152:32:487:3810:49
7:58
#10076
21M
21.00 mi13:31:092:40:427:397:54
7:54
#9829
35K
21.75 mi13:36:322:46:057:385:23
7:12
#9700
23M
23.00 mi13:46:272:56:007:399:55
7:55
#9629
24M
24.00 mi13:54:203:03:537:407:53
7:53
#9628
40K
24.85 mi14:01:213:10:547:417:01
8:12
#9672
25.2M
25.20 mi14:04:223:13:557:423:01
8:45
#9684
Finish
26.22 mi14:12:033:21:367:427:41
7:32
#9619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi13081348434849616(Top 36%)1672(Top 15%)1672(Top 34%)
10K6.21 mi3.10 mi11691+13902701+7832701+78310402(Top 39%)2005(Top 18%)2005(Top 41%)
15K9.32 mi3.11 mi10944+7472305+3962305+3969616(Top 36%)1672(Top 15%)1672(Top 34%)
20K12.43 mi3.11 mi10761+1832224+812224+8110225(Top 38%)2010(Top 18%)2010(Top 41%)
Half13.11 mi0.68 mi10680+812172+522172+529324(Top 35%)1616(Top 14%)1616(Top 33%)
25K15.53 mi2.42 mi10498+1822092+802092+809924(Top 37%)1970(Top 17%)1970(Top 40%)
30K18.64 mi3.11 mi10106+3921941+1511941+1518568(Top 32%)1543(Top 14%)1543(Top 32%)
20M20.00 mi1.36 mi10076+301961-201961-209977(Top 37%)2208(Top 19%)2208(Top 45%)
21M21.00 mi1.00 mi9829+2471867+941867+946771(Top 25%)1052(Top 9%)1052(Top 22%)
35K21.75 mi0.75 mi9700+1291822+451822+456560(Top 25%)953(Top 8%)953(Top 20%)
23M23.00 mi1.25 mi9629+711832-101832-109231(Top 35%)2134(Top 19%)2134(Top 44%)
24M24.00 mi1.00 mi9628+11855-231855-2310420(Top 39%)2786(Top 24%)2786(Top 57%)
40K24.85 mi0.85 mi9672-441900-451900-4511412(Top 43%)3360(Top 29%)3360(Top 69%)
25.2M25.20 mi0.35 mi9684-121920-201920-2011034(Top 41%)3192(Top 28%)3192(Top 65%)
Finish26.22 mi1.02 mi9619+651923-31923-38869(Top 33%)2182(Top 19%)2182(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9616

Females

1672

F18-39

1672

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10402

Females

2005

F18-39

2005

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9616

Females

1672

F18-39

1672

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10225

Females

2010

F18-39

2010

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9324

Females

1616

F18-39

1616

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9924

Females

1970

F18-39

1970

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8568

Females

1543

F18-39

1543

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9977

Females

2208

F18-39

2208

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6771

Females

1052

F18-39

1052

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

6560

Females

953

F18-39

953

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9231

Females

2134

F18-39

2134

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10420

Females

2786

F18-39

2786

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11412

Females

3360

F18-39

3360

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11034

Females

3192

F18-39

3192

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8869

Females

2182

F18-39

2182

Passing Analysis

Category:
Athletes Passed
4005*
Passed By
543
Net Change
+3462
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13081
5K → 10K142333+1390#13081#11691
10K → 15K76215+747#11691#10944
15K → 20K25471+183#10944#10761
20K → Half865+81#10761#10680
Half → 25K21634+182#10680#10498
25K → 30K413*21+392#10498#10106
30K → 20M10474+30#10106#10076
20M → 21M250*3+247#10076#9829
21M → 35K1312+129#9829#9700
35K → 23M12958+71#9700#9629
23M → 24M6160+1#9629#9628
24M → 40K44*88-44#9628#9672
40K → 25.2M3042-12#9672#9684
25.2M → Finish102*37+65#9684#9619
TOTALS4005*543+3462

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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