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BOSTON MARATHON 2023

Laura Dombroski

MA

Bib: 22910 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Mile 2
Mile 4
Mile 8
Mile 10
Mile 14
Start
0:00
Race begins
5K· 3.11 mi
8:26/mi
26:12
↑ 97↓ 345
10K· 6.21 mi
7:56/mi
50:50
↑ 79↓ 138
15K· 9.32 mi
7:54/mi
1:15:23
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:40:58
↑ 106↓ 86
Half· 13.11 mi
8:23/mi
1:46:41
↑ 19↓ 37
25K· 15.53 mi
8:52/mi
2:08:12
↑ 66↓ 88
30K· 18.64 mi
10:05/mi
2:39:31
↑ 181↓ 148
20M
10:42/mi
2:54:04
↑ 64↓ 50
21M
13:42/mi
3:07:46
↑ 106↓ 24
35K· 21.75 mi
38:47/mi
3:36:47
↑ 17↓ 86
23M
10:24/mi
3:49:48
↑ 23↓ 63
24M
11:50/mi
4:01:38
↓ 82
40K· 24.85 mi
10:57/mi
4:11:00
↓ 20
25.2M
12:48/mi
4:15:25
↑ 13↓ 16
Finish· 26.22 mi
10:59/mi
4:26:37
↑ 22↓ 21
Course Elevation
890ft
Total climb
462ft
Range
7 to 469 ft
1,342ft
Total descent
About the height of two redwood trees

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The Course

Half Splits

1st Half· via Half
1:46:418:08 /mi⚡ faster
2nd Half
2:39:5612:12 /mi+49.9%
Positive split — 49.9% slower in the second half
AI Race Performance Report

Laura's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

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Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
26:128:263.11 mi26:12
8:26
-
10K
50:508:113.10 mi24:38
7:56
-0:30
15K
1:15:238:053.11 mi24:33
7:54
-0:02
20K
1:40:588:073.11 mi25:35
8:14
+0:20
Half(13.11 mi)
1:46:418:080.68 mi5:43
8:23
+0:09
25K
2:08:128:152.42 mi21:31
8:52
+0:29
30K
2:39:318:333.11 mi31:19
10:05
+1:13
20M
2:54:048:421.36 mi14:33
10:42
+0:37
21M
3:07:468:561.00 mi13:42
13:42
+3:00
35K
3:36:479:580.75 mi29:01
38:47
+25:05
23M
3:49:489:591.25 mi13:01
10:24
-28:23
24M
4:01:3810:041.00 mi11:50
11:50
+1:26
40K
4:11:0010:060.85 mi9:22
10:57
-0:53
25.2M
4:15:2510:080.35 mi4:25
12:48
+1:51
Finish(26.22 mi)
4:26:3710:111.02 mi11:12
10:59
-1:49
Trend:
Faster pace
Steady pace
Slower pace
More below

See the rest of Laura's race

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Checkpoints & Pacing

Pace Line

Fastest Pace

7:54 /mi

Average Pace

10:11 /mi

Slowest Pace

38:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:57:36

89% of race

Time at Slower Pace

29:01

11% of race

Average Pace: 10:10 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi17128601760171359138383838
10K3.10 mi15696+14325093+9245093+9241425342144214
15K3.11 mi15040+6564691+4024691+4021359138383838
20K3.11 mi15055-154718-274718-271519448354835
Half(13.11 mi)0.68 mi15166-1114785-674785-671709059695969
25K2.42 mi15711-5455157-3725157-3721834667556755
30K3.11 mi17104-13936028-8716028-8712124684918491
20M1.36 mi17746-6426427-3996427-3992217990829082
21M1.00 mi18750-10047020-5937020-593247761048910489
35K0.75 mi22296-35469032-20129032-2012266191142311423
23M1.25 mi22226+709003+299003+292107285678567
24M1.00 mi22366-1409084-819084-81243181033510335
40K0.85 mi22351+159085-19085-12226792769276
25.2M0.35 mi22379-289107-229107-22237301004510045
Finish(26.22 mi)1.02 mi22438-599148-419148-41239551014010140

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
469 ft222 ft
↑ 97ft↓ 345ft
248 ft

Overall

13591

Females

3838

F55-59

3838

5K→10K

3.1 - 6.2 mi

Top 54%
216 ft157 ft
↑ 79ft↓ 138ft
59 ft

Overall

14253

Females

4214

F55-59

4214

10K→15K

6.2 - 9.3 mi

Top 51%
157 ft146 ft
↑ 67ft↓ 78ft
34 ft

Overall

13591

Females

3838

F55-59

3838

15K→20K

9.3 - 12.4 mi

Top 57%
147 ft167 ft
↑ 106ft↓ 86ft
63 ft

Overall

15194

Females

4835

F55-59

4835

20K→Half

12.4 - 13.1 mi

Top 64%
165 ft147 ft
↑ 19ft↓ 37ft
30 ft

Overall

17090

Females

5969

F55-59

5969

Half→25K

13.1 - 15.5 mi

Top 69%
148 ft126 ft
↑ 66ft↓ 88ft
44 ft

Overall

18346

Females

6755

F55-59

6755

25K→30K

15.5 - 18.6 mi

Top 80%
106 ft139 ft
↑ 181ft↓ 148ft
109 ft

Overall

21246

Females

8491

F55-59

8491

30K→20M

18.6 - 20.0 mi

Top 83%
134 ft148 ft
↑ 64ft↓ 50ft
56 ft

Overall

22179

Females

9082

F55-59

9082

20M→21M

20.0 - 21.0 mi

Top 93%
147 ft230 ft
↑ 106ft↓ 24ft
97 ft

Overall

24776

Females

10489

F55-59

10489

21M→35K

21.0 - 21.8 mi

Top 100%
223 ft154 ft
↑ 17ft↓ 86ft
78 ft

Overall

26619

Females

11423

F55-59

11423

35K→23M

21.8 - 23.0 mi

Top 79%
158 ft119 ft
↑ 23ft↓ 63ft
63 ft

Overall

21072

Females

8567

F55-59

8567

23M→24M

23.0 - 24.0 mi

Top 91%
115 ft45 ft
↑ 12ft↓ 82ft
70 ft

Overall

24318

Females

10335

F55-59

10335

24M→40K

24.0 - 24.9 mi

Top 84%
31 ft17 ft
↑ 6ft↓ 20ft
15 ft

Overall

22267

Females

9276

F55-59

9276

40K→25.2M

24.9 - 25.2 mi

Top 89%
22 ft19 ft
↑ 13ft↓ 16ft
16 ft

Overall

23730

Females

10045

F55-59

10045

25.2M→Finish

25.2 - 26.2 mi

Top 90%
16 ft17 ft
↑ 22ft↓ 21ft
19 ft

Overall

23955

Females

10140

F55-59

10140

Passing Analysis

No position changes recorded for this athlete.

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing