Boston Marathon logo
BOSTON MARATHON 2023

Laura Bult

Bib: 32051•F

NY

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:12
Rank: #22711
Start → 5K
30:12 | 9:43/mi
10K· 6.21 mi
58:12
Rank: #21937 (+774)
5K → 10K
28:00 | 9:01/mi
15K· 9.32 mi
1:25:51
Rank: #21401 (+536)
10K → 15K
27:39 | 8:54/mi
20K· 12.43 mi
1:54:23
Rank: #21199 (+202)
15K → 20K
28:32 | 9:11/mi
Half· 13.11 mi
2:00:39
Rank: #21189 (+10)
20K → Half
6:16 | 9:11/mi
25K· 15.53 mi
2:23:04
Rank: #20966 (+223)
Half → 25K
22:25 | 9:15/mi
30K· 18.64 mi
2:51:37
Rank: #20484 (+482)
25K → 30K
28:33 | 9:11/mi
20M
3:04:06
Rank: #20267 (+217)
30K → 20M
12:29 | 9:11/mi
21M
3:13:30
Rank: #20011 (+256)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:19:58
Rank: #19881 (+130)
21M → 35K
6:28 | 8:39/mi
23M
3:31:07
Rank: #19652 (+229)
35K → 23M
11:09 | 8:54/mi
24M
3:39:54
Rank: #19517 (+135)
23M → 24M
8:47 | 8:47/mi
40K· 24.85 mi
3:47:29
Rank: #19386 (+131)
24M → 40K
7:35 | 8:52/mi
25.2M
3:50:43
Rank: #19324 (+62)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:59:18
Rank: #19188 (+136)
25.2M → Finish
8:35 | 8:25/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half
Distance13.11 mi
Time2:00:39
Pace9:12 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:58:39
Pace9:03 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0530:129:4330:12
9:43
-
10K
6.21 mi12:19:0558:129:2228:00
9:01
-0:42
15K
9.32 mi12:46:441:25:519:1327:39
8:54
-0:07
20K
12.43 mi13:15:161:54:239:1228:32
9:11
+0:17
Half
13.11 mi13:21:322:00:399:126:16
9:11
0:00
25K
15.53 mi13:43:572:23:049:1322:25
9:15
+0:04
30K
18.64 mi14:12:302:51:379:1228:33
9:11
-0:04
20M
20.00 mi14:24:593:04:069:1212:29
9:11
0:00
21M
21.00 mi14:34:233:13:309:139:24
9:24
+0:13
35K
21.75 mi14:40:513:19:589:126:28
8:39
-0:45
23M
23.00 mi14:52:003:31:079:1111:09
8:54
+0:15
24M
24.00 mi15:00:473:39:549:108:47
8:47
-0:07
40K
24.85 mi15:08:223:47:299:097:35
8:52
+0:05
25.2M
25.20 mi15:11:363:50:439:093:14
9:23
+0:31
Finish
26.22 mi15:20:113:59:189:088:35
8:25
-0:58

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

8:25 /mi

Average Pace

9:08 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:28

82% of race

Time at Steady Pace

42:50

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:08 /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 mi11:51:0530:129:4330:12
9:43
#22711
10K
6.21 mi12:19:0558:129:2228:00
9:01
#21937
15K
9.32 mi12:46:441:25:519:1327:39
8:54
#21401
20K
12.43 mi13:15:161:54:239:1228:32
9:11
#21199
Half
13.11 mi13:21:322:00:399:126:16
9:11
#21189
25K
15.53 mi13:43:572:23:049:1322:25
9:15
#20966
30K
18.64 mi14:12:302:51:379:1228:33
9:11
#20484
20M
20.00 mi14:24:593:04:069:1212:29
9:11
#20267
21M
21.00 mi14:34:233:13:309:139:24
9:24
#20011
35K
21.75 mi14:40:513:19:589:126:28
8:39
#19881
23M
23.00 mi14:52:003:31:079:1111:09
8:54
#19652
24M
24.00 mi15:00:473:39:549:108:47
8:47
#19517
40K
24.85 mi15:08:223:47:299:097:35
8:52
#19386
25.2M
25.20 mi15:11:363:50:439:093:14
9:23
#19324
Finish
26.22 mi15:20:113:59:189:088:35
8:25
#19188
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi227119236923620047(Top 75%)7708(Top 67%)7708(Top 158%)
10K6.21 mi3.10 mi21937+7748816+4208816+42020931(Top 79%)8218(Top 72%)8218(Top 168%)
15K9.32 mi3.11 mi21401+5368500+3168500+31620047(Top 75%)7708(Top 67%)7708(Top 158%)
20K12.43 mi3.11 mi21199+2028380+1208380+12020507(Top 77%)7961(Top 70%)7961(Top 163%)
Half13.11 mi0.68 mi21189+108367+138367+1321107(Top 79%)8301(Top 73%)8301(Top 170%)
25K15.53 mi2.42 mi20966+2238244+1238244+12320011(Top 75%)7696(Top 67%)7696(Top 158%)
30K18.64 mi3.11 mi20484+4827998+2467998+24618127(Top 68%)6725(Top 59%)6725(Top 138%)
20M20.00 mi1.36 mi20267+2177896+1027896+10217508(Top 66%)6461(Top 57%)6461(Top 132%)
21M21.00 mi1.00 mi20011+2567758+1387758+13815513(Top 58%)5368(Top 47%)5368(Top 110%)
35K21.75 mi0.75 mi19881+1307685+737685+7316175(Top 61%)5814(Top 51%)5814(Top 119%)
23M23.00 mi1.25 mi19652+2297554+1317554+13115603(Top 59%)5522(Top 48%)5522(Top 113%)
24M24.00 mi1.00 mi19517+1357494+607494+6016147(Top 61%)5897(Top 52%)5897(Top 121%)
40K24.85 mi0.85 mi19386+1317422+727422+7215501(Top 58%)5595(Top 49%)5595(Top 115%)
25.2M25.20 mi0.35 mi19324+627387+357387+3514694(Top 55%)5160(Top 45%)5160(Top 106%)
Finish26.22 mi1.02 mi19188+1367317+707317+7014932(Top 56%)5233(Top 46%)5233(Top 107%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

20047

Females

7708

F18-39

7708

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

20931

Females

8218

F18-39

8218

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

20047

Females

7708

F18-39

7708

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20507

Females

7961

F18-39

7961

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

21107

Females

8301

F18-39

8301

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

20011

Females

7696

F18-39

7696

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

18127

Females

6725

F18-39

6725

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

17508

Females

6461

F18-39

6461

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15513

Females

5368

F18-39

5368

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

16175

Females

5814

F18-39

5814

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15603

Females

5522

F18-39

5522

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

16147

Females

5897

F18-39

5897

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15501

Females

5595

F18-39

5595

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14694

Females

5160

F18-39

5160

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

14932

Females

5233

F18-39

5233

Passing Analysis

Category:
Athletes Passed
3707
Passed By
184
Net Change
+3523
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22711
5K → 10K80733+774#22711#21937
10K → 15K55418+536#21937#21401
15K → 20K25755+202#21401#21199
20K → Half2919+10#21199#21189
Half → 25K24522+223#21189#20966
25K → 30K4875+482#20966#20484
30K → 20M2269+217#20484#20267
20M → 21M2582+256#20267#20011
21M → 35K1311+130#20011#19881
35K → 23M2323+229#19881#19652
23M → 24M1427+135#19652#19517
24M → 40K1354+131#19517#19386
40K → 25.2M642+62#19386#19324
25.2M → Finish1404+136#19324#19188
TOTALS3707184+3523
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing