Boston Marathon logo
BOSTON MARATHON 2025

Laura Lessman

Bib: 20897•F

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:57
Rank: #14030
Start → 5K
7:43/mi
23:57 split
10K· 6.21 mi
49:37
Rank: #16378 (-2348)
5K → 10K
8:16/mi
25:40 split
15K· 9.32 mi
1:19:30
Rank: #19851 (-3473)
10K → 15K
9:37/mi
29:53 split
20K· 12.43 mi
1:49:07
Rank: #20814 (-963)
15K → 20K
9:32/mi
29:37 split
Half· 13.11 mi
1:55:04
Rank: #20808 (+6)
20K → Half
8:43/mi
5:57 split
25K· 15.53 mi
2:19:37
Rank: #21498 (-690)
Half → 25K
10:08/mi
24:33 split
30K· 18.64 mi
2:57:29
Rank: #22856 (-1358)
25K → 30K
12:11/mi
37:52 split
20M
3:11:39
Rank: #22811 (+45)
30K → 20M
10:25/mi
14:10 split
21M
3:22:25
Rank: #22683 (+128)
20M → 21M
10:46/mi
10:46 split
35K· 21.75 mi
3:29:43
Rank: #22604 (+79)
21M → 35K
9:45/mi
7:18 split
23M
3:44:03
Rank: #22728 (-124)
35K → 23M
11:27/mi
14:20 split
24M
3:53:45
Rank: #22602 (+126)
23M → 24M
9:42/mi
9:42 split
40K· 24.85 mi
4:02:28
Rank: #22542 (+60)
24M → 40K
10:12/mi
8:43 split
25.2M
4:06:36
Rank: #22566 (-24)
40K → 25.2M
11:59/mi
4:08 split
Finish· 26.22 mi
4:16:33
Rank: #22536 (+30)
25.2M → Finish
9:46/mi
9:57 split

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
Time1:55:04
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:21:29
Pace10:48 /mi
📊Positive Split: 23.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0923:577:4323:57
7:43
-
10K
6.21 mi11:45:4949:377:5925:40
8:16
+0:33
15K
9.32 mi12:15:421:19:308:3229:53
9:37
+1:21
20K
12.43 mi12:45:191:49:078:4729:37
9:32
-0:05
Half
13.11 mi12:51:161:55:048:475:57
8:43
-0:49
25K
15.53 mi13:15:492:19:378:5924:33
10:08
+1:25
30K
18.64 mi13:53:412:57:299:3137:52
12:11
+2:03
20M
20.00 mi14:07:513:11:399:3514:10
10:25
-1:46
21M
21.00 mi14:18:373:22:259:3810:46
10:46
+0:21
35K
21.75 mi14:25:553:29:439:397:18
9:45
-1:01
23M
23.00 mi14:40:153:44:039:4414:20
11:27
+1:42
24M
24.00 mi14:49:573:53:459:449:42
9:42
-1:45
40K
24.85 mi14:58:404:02:289:458:43
10:12
+0:30
25.2M
25.20 mi15:02:484:06:369:474:08
11:59
+1:47
Finish
26.22 mi15:12:454:16:339:489:57
9:46
-2:13

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

7:43 /mi

Average Pace

9:48 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:34

22% of race

Time at Steady Pace

1:59:43

47% of race

Time at Slower Pace

1:21:16

32% of race

Average Pace: 9:47 /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 mi11:20:0923:577:4323:57
7:43
#14030
10K
6.21 mi11:45:4949:377:5925:40
8:16
#16378
15K
9.32 mi12:15:421:19:308:3229:53
9:37
#19851
20K
12.43 mi12:45:191:49:078:4729:37
9:32
#20814
Half
13.11 mi12:51:161:55:048:475:57
8:43
#20808
25K
15.53 mi13:15:492:19:378:5924:33
10:08
#21498
30K
18.64 mi13:53:412:57:299:3137:52
12:11
#22856
20M
20.00 mi14:07:513:11:399:3514:10
10:25
#22811
21M
21.00 mi14:18:373:22:259:3810:46
10:46
#22683
35K
21.75 mi14:25:553:29:439:397:18
9:45
#22604
23M
23.00 mi14:40:153:44:039:4414:20
11:27
#22728
24M
24.00 mi14:49:573:53:459:449:42
9:42
#22602
40K
24.85 mi14:58:404:02:289:458:43
10:12
#22542
25.2M
25.20 mi15:02:484:06:369:474:08
11:59
#22566
Finish
26.22 mi15:12:454:16:339:489:57
9:46
#22536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi140303933393324064(Top 85%)9710(Top 79%)9710(Top 565%)
10K6.21 mi3.10 mi16378-23485372-14395372-143918284(Top 64%)6480(Top 53%)6480(Top 377%)
15K9.32 mi3.11 mi19851-34737382-20107382-201024064(Top 85%)9710(Top 79%)9710(Top 565%)
20K12.43 mi3.11 mi20814-9637934-5527934-55222997(Top 81%)9147(Top 75%)9147(Top 532%)
Half13.11 mi0.68 mi20808+67927+77927+720427(Top 72%)7727(Top 63%)7727(Top 450%)
25K15.53 mi2.42 mi21498-6908321-3948321-39423549(Top 83%)9510(Top 78%)9510(Top 554%)
30K18.64 mi3.11 mi22856-13589103-7829103-78225818(Top 91%)10849(Top 89%)10849(Top 631%)
20M20.00 mi1.36 mi22811+459109-69109-622205(Top 78%)9019(Top 74%)9019(Top 525%)
21M21.00 mi1.00 mi22683+1289052+579052+5720734(Top 73%)8308(Top 68%)8308(Top 484%)
35K21.75 mi0.75 mi22604+799022+309022+3021159(Top 74%)8601(Top 70%)8601(Top 501%)
23M23.00 mi1.25 mi22728-1249114-929114-9224153(Top 85%)10181(Top 83%)10181(Top 593%)
24M24.00 mi1.00 mi22602+1269074+409074+4020349(Top 72%)8273(Top 68%)8273(Top 482%)
40K24.85 mi0.85 mi22542+609053+219053+2121036(Top 74%)8694(Top 71%)8694(Top 506%)
25.2M25.20 mi0.35 mi22566-249075-229075-2223158(Top 82%)9753(Top 80%)9753(Top 568%)
Finish26.22 mi1.02 mi22536+309081-69081-622122(Top 78%)9230(Top 75%)9230(Top 537%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

24064

Females

9710

F40-44

9710

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18284

Females

6480

F40-44

6480

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

24064

Females

9710

F40-44

9710

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

22997

Females

9147

F40-44

9147

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20427

Females

7727

F40-44

7727

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23549

Females

9510

F40-44

9510

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25818

Females

10849

F40-44

10849

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22205

Females

9019

F40-44

9019

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20734

Females

8308

F40-44

8308

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21159

Females

8601

F40-44

8601

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

24153

Females

10181

F40-44

10181

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20349

Females

8273

F40-44

8273

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21036

Females

8694

F40-44

8694

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23158

Females

9753

F40-44

9753

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22122

Females

9230

F40-44

9230

Passing Analysis

Category:
Athletes Passed
788
Passed By
9294
Net Change
-8506
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14030
5K → 10K162364-2348#14030#16378
10K → 15K53478-3473#16378#19851
15K → 20K401003-963#19851#20814
20K → Half2721+6#20814#20808
Half → 25K33723-690#20808#21498
25K → 30K191377-1358#21498#22856
30K → 20M9954+45#22856#22811
20M → 21M14315+128#22811#22683
21M → 35K889+79#22683#22604
35K → 23M37161-124#22604#22728
23M → 24M1315+126#22728#22602
24M → 40K7616+60#22602#22542
40K → 25.2M1236-24#22542#22566
25.2M → Finish6232+30#22566#22536
TOTALS7889294-8506
📊

Passing Visuals

Category:
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