Boston Marathon logo
BOSTON MARATHON 2023

Jane Van Leeuwen

Bib: 23037•F

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:00
Rank: #18814
Start → 5K
27:00 | 8:41/mi
10K· 6.21 mi
53:44
Rank: #18787 (+27)
5K → 10K
26:44 | 8:36/mi
15K· 9.32 mi
1:20:22
Rank: #18605 (+182)
10K → 15K
26:38 | 8:34/mi
20K· 12.43 mi
1:47:29
Rank: #18505 (+100)
15K → 20K
27:07 | 8:44/mi
Half· 13.11 mi
1:53:19
Rank: #18472 (+33)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:14:50
Rank: #18456 (+16)
Half → 25K
21:31 | 8:52/mi
30K· 18.64 mi
2:43:10
Rank: #18296 (+160)
25K → 30K
28:20 | 9:07/mi
20M
2:55:35
Rank: #18201 (+95)
30K → 20M
12:25 | 9:08/mi
21M
3:05:29
Rank: #18174 (+27)
20M → 21M
9:54 | 9:54/mi
35K· 21.75 mi
3:11:59
Rank: #18097 (+77)
21M → 35K
6:30 | 8:41/mi
23M
3:23:29
Rank: #18036 (+61)
35K → 23M
11:30 | 9:11/mi
24M
3:32:20
Rank: #17967 (+69)
23M → 24M
8:51 | 8:51/mi
40K· 24.85 mi
3:40:05
Rank: #17921 (+46)
24M → 40K
7:45 | 9:04/mi
25.2M
3:43:36
Rank: #17922 (-1)
40K → 25.2M
3:31 | 10:12/mi
Finish· 26.22 mi
3:52:40
Rank: #17920 (+2)
25.2M → Finish
9:04 | 8:54/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 HalfFaster
Distance13.11 mi
Time1:53:19
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:59:21
Pace9:06 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0127:008:4127:00
8:41
-
10K
6.21 mi11:48:4553:448:3926:44
8:36
-0:05
15K
9.32 mi12:15:231:20:228:3726:38
8:34
-0:02
20K
12.43 mi12:42:301:47:298:3927:07
8:44
+0:10
Half
13.11 mi12:48:201:53:198:395:50
8:33
-0:11
25K
15.53 mi13:09:512:14:508:4121:31
8:52
+0:19
30K
18.64 mi13:38:112:43:108:4528:20
9:07
+0:15
20M
20.00 mi13:50:362:55:358:4712:25
9:08
+0:01
21M
21.00 mi14:00:303:05:298:509:54
9:54
+0:46
35K
21.75 mi14:07:003:11:598:506:30
8:41
-1:13
23M
23.00 mi14:18:303:23:298:5111:30
9:11
+0:30
24M
24.00 mi14:27:213:32:208:518:51
8:51
-0:20
40K
24.85 mi14:35:063:40:058:517:45
9:04
+0:13
25.2M
25.20 mi14:38:373:43:368:523:31
10:12
+1:08
Finish
26.22 mi14:47:413:52:408:539:04
8:54
-1:18

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

8:33 /mi

Average Pace

8:53 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:15

94% of race

Time at Steady Pace

9:54

4% of race

Time at Slower Pace

3:31

2% of race

Average Pace: 8:52 /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 mi11:22:0127:008:4127:00
8:41
#18814
10K
6.21 mi11:48:4553:448:3926:44
8:36
#18787
15K
9.32 mi12:15:231:20:228:3726:38
8:34
#18605
20K
12.43 mi12:42:301:47:298:3927:07
8:44
#18505
Half
13.11 mi12:48:201:53:198:395:50
8:33
#18472
25K
15.53 mi13:09:512:14:508:4121:31
8:52
#18456
30K
18.64 mi13:38:112:43:108:4528:20
9:07
#18296
20M
20.00 mi13:50:362:55:358:4712:25
9:08
#18201
21M
21.00 mi14:00:303:05:298:509:54
9:54
#18174
35K
21.75 mi14:07:003:11:598:506:30
8:41
#18097
23M
23.00 mi14:18:303:23:298:5111:30
9:11
#18036
24M
24.00 mi14:27:213:32:208:518:51
8:51
#17967
40K
24.85 mi14:35:063:40:058:517:45
9:04
#17921
25.2M
25.20 mi14:38:373:43:368:523:31
10:12
#17922
Finish
26.22 mi14:47:413:52:408:539:04
8:54
#17920
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi188147082708218284(Top 69%)6666(Top 58%)6666(Top 818%)
10K6.21 mi3.10 mi18787+277003+797003+7918874(Top 71%)7007(Top 61%)7007(Top 860%)
15K9.32 mi3.11 mi18605+1826884+1196884+11918284(Top 69%)6666(Top 58%)6666(Top 818%)
20K12.43 mi3.11 mi18505+1006805+796805+7918300(Top 69%)6673(Top 58%)6673(Top 819%)
Half13.11 mi0.68 mi18472+336788+176788+1718052(Top 68%)6516(Top 57%)6516(Top 800%)
25K15.53 mi2.42 mi18456+166803-156803-1518341(Top 69%)6750(Top 59%)6750(Top 828%)
30K18.64 mi3.11 mi18296+1606738+656738+6517802(Top 67%)6526(Top 57%)6526(Top 801%)
20M20.00 mi1.36 mi18201+956698+406698+4017268(Top 65%)6319(Top 55%)6319(Top 775%)
21M21.00 mi1.00 mi18174+276705-76705-717666(Top 66%)6565(Top 57%)6565(Top 806%)
35K21.75 mi0.75 mi18097+776655+506655+5016388(Top 62%)5937(Top 52%)5937(Top 728%)
23M23.00 mi1.25 mi18036+616628+276628+2717000(Top 64%)6292(Top 55%)6292(Top 772%)
24M24.00 mi1.00 mi17967+696605+236605+2316516(Top 62%)6092(Top 53%)6092(Top 747%)
40K24.85 mi0.85 mi17921+466589+166589+1616513(Top 62%)6143(Top 54%)6143(Top 754%)
25.2M25.20 mi0.35 mi17922-16592-36592-318146(Top 68%)7026(Top 62%)7026(Top 862%)
Finish26.22 mi1.02 mi17920+26606-146606-1417502(Top 66%)6653(Top 58%)6653(Top 816%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18284

Females

6666

F55-59

6666

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

18874

Females

7007

F55-59

7007

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18284

Females

6666

F55-59

6666

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18300

Females

6673

F55-59

6673

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18052

Females

6516

F55-59

6516

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

18341

Females

6750

F55-59

6750

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

17802

Females

6526

F55-59

6526

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17268

Females

6319

F55-59

6319

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

17666

Females

6565

F55-59

6565

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16388

Females

5937

F55-59

5937

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

17000

Females

6292

F55-59

6292

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16516

Females

6092

F55-59

6092

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16513

Females

6143

F55-59

6143

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18146

Females

7026

F55-59

7026

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

17502

Females

6653

F55-59

6653

Passing Analysis

Category:
Athletes Passed
1986
Passed By
1092
Net Change
+894
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18814
5K → 10K369342+27#18814#18787
10K → 15K285103+182#18787#18605
15K → 20K206106+100#18605#18505
20K → Half4714+33#18505#18472
Half → 25K142126+16#18472#18456
25K → 30K25292+160#18456#18296
30K → 20M13338+95#18296#18201
20M → 21M11588+27#18201#18174
21M → 35K9114+77#18174#18097
35K → 23M9938+61#18097#18036
23M → 24M9021+69#18036#17967
24M → 40K7529+46#17967#17921
40K → 25.2M2627-1#17921#17922
25.2M → Finish5654+2#17922#17920
TOTALS19861092+894
📊

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