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BOSTON MARATHON 2023

Laura Kaiser

Bib: 19756•F

IN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Masters (Masters Women)
#0 / 6539
Top 29%
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
25:41
Rank: #15939
Start → 5K
25:41 | 8:16/mi
10K· 6.21 mi
50:55
Rank: #15784 (+155)
5K → 10K
25:14 | 8:07/mi
15K· 9.32 mi
1:15:50
Rank: #15398 (+386)
10K → 15K
24:55 | 8:01/mi
20K· 12.43 mi
1:41:17
Rank: #15256 (+142)
15K → 20K
25:27 | 8:11/mi
Half· 13.11 mi
1:46:48
Rank: #15230 (+26)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:06:40
Rank: #15023 (+207)
Half → 25K
19:52 | 8:12/mi
30K· 18.64 mi
2:32:58
Rank: #14867 (+156)
25K → 30K
26:18 | 8:28/mi
20M
2:44:33
Rank: #14758 (+109)
30K → 20M
11:35 | 8:31/mi
21M
2:53:28
Rank: #14629 (+129)
20M → 21M
8:55 | 8:55/mi
35K· 21.75 mi
2:59:51
Rank: #14642 (-13)
21M → 35K
6:23 | 8:32/mi
23M
3:11:06
Rank: #14729 (-87)
35K → 23M
11:15 | 8:59/mi
24M
3:19:59
Rank: #14789 (-60)
23M → 24M
8:53 | 8:53/mi
40K· 24.85 mi
3:27:38
Rank: #14809 (-20)
24M → 40K
7:39 | 8:57/mi
25.2M
3:30:55
Rank: #14801 (+8)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:39:25
Rank: #14789 (+12)
25.2M → Finish
8:30 | 8:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:48
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:52:37
Pace8:35 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5125:418:1625:41
8:16
-
10K
6.21 mi11:45:0550:558:1225:14
8:07
-0:09
15K
9.32 mi12:10:001:15:508:0824:55
8:01
-0:06
20K
12.43 mi12:35:271:41:178:0925:27
8:11
+0:10
Half
13.11 mi12:40:581:46:488:095:31
8:05
-0:06
25K
15.53 mi13:00:502:06:408:0919:52
8:12
+0:07
30K
18.64 mi13:27:082:32:588:1226:18
8:28
+0:16
20M
20.00 mi13:38:432:44:338:1411:35
8:31
+0:03
21M
21.00 mi13:47:382:53:288:168:55
8:55
+0:24
35K
21.75 mi13:54:012:59:518:166:23
8:32
-0:23
23M
23.00 mi14:05:163:11:068:1911:15
8:59
+0:27
24M
24.00 mi14:14:093:19:598:208:53
8:53
-0:06
40K
24.85 mi14:21:483:27:388:217:39
8:57
+0:04
25.2M
25.20 mi14:25:053:30:558:223:17
9:31
+0:34
Finish
26.22 mi14:33:353:39:258:228:30
8:20
-1:11

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

8:01 /mi

Average Pace

8:22 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:26

82% of race

Time at Steady Pace

36:42

17% of race

Time at Slower Pace

3:17

1% of race

Average Pace: 8:22 /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 mi11:19:5125:418:1625:41
8:16
#15939
10K
6.21 mi11:45:0550:558:1225:14
8:07
#15784
15K
9.32 mi12:10:001:15:508:0824:55
8:01
#15398
20K
12.43 mi12:35:271:41:178:0925:27
8:11
#15256
Half
13.11 mi12:40:581:46:488:095:31
8:05
#15230
25K
15.53 mi13:00:502:06:408:0919:52
8:12
#15023
30K
18.64 mi13:27:082:32:588:1226:18
8:28
#14867
20M
20.00 mi13:38:432:44:338:1411:35
8:31
#14758
21M
21.00 mi13:47:382:53:288:168:55
8:55
#14629
35K
21.75 mi13:54:012:59:518:166:23
8:32
#14642
23M
23.00 mi14:05:163:11:068:1911:15
8:59
#14729
24M
24.00 mi14:14:093:19:598:208:53
8:53
#14789
40K
24.85 mi14:21:483:27:388:217:39
8:57
#14809
25.2M
25.20 mi14:25:053:30:558:223:17
9:31
#14801
Finish
26.22 mi14:33:353:39:258:228:30
8:20
#14789
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi159395235523514557(Top 55%)4421(Top 39%)4421(Top 235%)
10K6.21 mi3.10 mi15784+1555147+885147+8815690(Top 59%)5073(Top 44%)5073(Top 270%)
15K9.32 mi3.11 mi15398+3864914+2334914+23314557(Top 55%)4421(Top 39%)4421(Top 235%)
20K12.43 mi3.11 mi15256+1424844+704844+7014923(Top 56%)4666(Top 41%)4666(Top 248%)
Half13.11 mi0.68 mi15230+264830+144830+1415099(Top 57%)4744(Top 42%)4744(Top 253%)
25K15.53 mi2.42 mi15023+2074726+1044726+10414202(Top 53%)4342(Top 38%)4342(Top 231%)
30K18.64 mi3.11 mi14867+1564657+694657+6914095(Top 53%)4392(Top 38%)4392(Top 234%)
20M20.00 mi1.36 mi14758+1094611+464611+4613795(Top 52%)4294(Top 38%)4294(Top 229%)
21M21.00 mi1.00 mi14629+1294564+474564+4712969(Top 49%)3933(Top 34%)3933(Top 209%)
35K21.75 mi0.75 mi14642-134590-264590-2615492(Top 58%)5398(Top 47%)5398(Top 287%)
23M23.00 mi1.25 mi14729-874673-834673-8315997(Top 60%)5736(Top 50%)5736(Top 305%)
24M24.00 mi1.00 mi14789-604728-554728-5516692(Top 63%)6186(Top 54%)6186(Top 329%)
40K24.85 mi0.85 mi14809-204767-394767-3915880(Top 60%)5778(Top 51%)5778(Top 308%)
25.2M25.20 mi0.35 mi14801+84775-84775-815317(Top 58%)5478(Top 48%)5478(Top 292%)
Finish26.22 mi1.02 mi14789+124783-84783-814373(Top 54%)4935(Top 43%)4935(Top 263%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14557

Females

4421

F40-44

4421

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15690

Females

5073

F40-44

5073

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14557

Females

4421

F40-44

4421

15K→20K

9.3 - 12.4 mi

Top 56%
×5stories
+106ft-86ft

Overall

14923

Females

4666

F40-44

4666

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15099

Females

4744

F40-44

4744

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14202

Females

4342

F40-44

4342

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14095

Females

4392

F40-44

4392

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

13795

Females

4294

F40-44

4294

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

12969

Females

3933

F40-44

3933

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

15492

Females

5398

F40-44

5398

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

15997

Females

5736

F40-44

5736

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16692

Females

6186

F40-44

6186

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15880

Females

5778

F40-44

5778

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15317

Females

5478

F40-44

5478

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

14373

Females

4935

F40-44

4935

Passing Analysis

Category:
Athletes Passed
2186
Passed By
1036
Net Change
+1150
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15939
5K → 10K375220+155#15939#15784
10K → 15K43852+386#15784#15398
15K → 20K23795+142#15398#15256
20K → Half4923+26#15256#15230
Half → 25K24841+207#15230#15023
25K → 30K25498+156#15023#14867
30K → 20M14031+109#14867#14758
20M → 21M15526+129#14758#14629
21M → 35K4154-13#14629#14642
35K → 23M50137-87#14642#14729
23M → 24M51111-60#14729#14789
24M → 40K5474-20#14789#14809
40K → 25.2M3022+8#14809#14801
25.2M → Finish6452+12#14801#14789
TOTALS21861036+1150
📊

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