Boston Marathon logo
BOSTON MARATHON 2025

Kathleen Lambert

Bib: 23596•F

GA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:44
Rank: #20473
Start → 5K
26:44 | 8:36/mi
10K· 6.21 mi
53:40
Rank: #20582 (-109)
5K → 10K
26:56 | 8:40/mi
15K· 9.32 mi
1:20:54
Rank: #20633 (-51)
10K → 15K
27:14 | 8:46/mi
20K· 12.43 mi
1:48:09
Rank: #20436 (+197)
15K → 20K
27:15 | 8:46/mi
Half· 13.11 mi
1:54:07
Rank: #20435 (+1)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:15:21
Rank: #20138 (+297)
Half → 25K
21:14 | 8:45/mi
30K· 18.64 mi
2:43:40
Rank: #19745 (+393)
25K → 30K
28:19 | 9:07/mi
20M
2:56:23
Rank: #19661 (+84)
30K → 20M
12:43 | 9:21/mi
21M
3:06:36
Rank: #19633 (+28)
20M → 21M
10:13 | 10:13/mi
35K· 21.75 mi
3:13:04
Rank: #19510 (+123)
21M → 35K
6:28 | 8:39/mi
23M
3:24:51
Rank: #19443 (+67)
35K → 23M
11:47 | 9:25/mi
24M
3:34:12
Rank: #19426 (+17)
23M → 24M
9:21 | 9:21/mi
40K· 24.85 mi
3:42:44
Rank: #19472 (-46)
24M → 40K
8:32 | 9:59/mi
25.2M
3:46:53
Rank: #19579 (-107)
40K → 25.2M
4:09 | 12:02/mi
Finish· 26.22 mi
3:57:11
Rank: #19780 (-201)
25.2M → Finish
10:18 | 10:06/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
Time1:54:07
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:03:04
Pace9:23 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:0826:448:3626:44
8:36
-
10K
6.21 mi11:52:0453:408:3826:56
8:40
+0:04
15K
9.32 mi12:19:181:20:548:4127:14
8:46
+0:06
20K
12.43 mi12:46:331:48:098:4227:15
8:46
0:00
Half
13.11 mi12:52:311:54:078:425:58
8:45
-0:01
25K
15.53 mi13:13:452:15:218:4321:14
8:45
0:00
30K
18.64 mi13:42:042:43:408:4728:19
9:07
+0:22
20M
20.00 mi13:54:472:56:238:4912:43
9:21
+0:14
21M
21.00 mi14:05:003:06:368:5310:13
10:13
+0:52
35K
21.75 mi14:11:283:13:048:536:28
8:39
-1:34
23M
23.00 mi14:23:153:24:518:5411:47
9:25
+0:46
24M
24.00 mi14:32:363:34:128:569:21
9:21
-0:04
40K
24.85 mi14:41:083:42:448:588:32
9:59
+0:38
25.2M
25.20 mi14:45:173:46:539:004:09
12:02
+2:03
Finish
26.22 mi14:55:353:57:119:0310:18
10:06
-1:56

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

8:36 /mi

Average Pace

9:03 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:08

25% of race

Time at Steady Pace

2:23:51

61% of race

Time at Slower Pace

33:12

14% of race

Average Pace: 9:03 /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 mi11:25:0826:448:3626:44
8:36
#20473
10K
6.21 mi11:52:0453:408:3826:56
8:40
#20582
15K
9.32 mi12:19:181:20:548:4127:14
8:46
#20633
20K
12.43 mi12:46:331:48:098:4227:15
8:46
#20436
Half
13.11 mi12:52:311:54:078:425:58
8:45
#20435
25K
15.53 mi13:13:452:15:218:4321:14
8:45
#20138
30K
18.64 mi13:42:042:43:408:4728:19
9:07
#19745
20M
20.00 mi13:54:472:56:238:4912:43
9:21
#19661
21M
21.00 mi14:05:003:06:368:5310:13
10:13
#19633
35K
21.75 mi14:11:283:13:048:536:28
8:39
#19510
23M
23.00 mi14:23:153:24:518:5411:47
9:25
#19443
24M
24.00 mi14:32:363:34:128:569:21
9:21
#19426
40K
24.85 mi14:41:083:42:448:588:32
9:59
#19472
25.2M
25.20 mi14:45:173:46:539:004:09
12:02
#19579
Finish
26.22 mi14:55:353:57:119:0310:18
10:06
#19780
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi204737790779020833(Top 73%)7909(Top 65%)7909(Top 607%)
10K6.21 mi3.10 mi20582-1097816-267816-2620696(Top 73%)7861(Top 64%)7861(Top 603%)
15K9.32 mi3.11 mi20633-517827-117827-1120833(Top 73%)7909(Top 65%)7909(Top 607%)
20K12.43 mi3.11 mi20436+1977723+1047723+10419783(Top 70%)7365(Top 60%)7365(Top 565%)
Half13.11 mi0.68 mi20435+17727-47727-420569(Top 72%)7815(Top 64%)7815(Top 600%)
25K15.53 mi2.42 mi20138+2977570+1577570+15718689(Top 66%)6812(Top 56%)6812(Top 523%)
30K18.64 mi3.11 mi19745+3937379+1917379+19118239(Top 64%)6712(Top 55%)6712(Top 515%)
20M20.00 mi1.36 mi19661+847355+247355+2418533(Top 65%)7026(Top 57%)7026(Top 539%)
21M21.00 mi1.00 mi19633+287365-107365-1019052(Top 67%)7363(Top 60%)7363(Top 565%)
35K21.75 mi0.75 mi19510+1237308+577308+5716264(Top 57%)5949(Top 49%)5949(Top 457%)
23M23.00 mi1.25 mi19443+677309-17309-118261(Top 64%)7122(Top 58%)7122(Top 547%)
24M24.00 mi1.00 mi19426+177321-127321-1218999(Top 67%)7553(Top 62%)7553(Top 580%)
40K24.85 mi0.85 mi19472-467365-447365-4420382(Top 72%)8362(Top 68%)8362(Top 642%)
25.2M25.20 mi0.35 mi19579-1077443-787443-7823258(Top 82%)9805(Top 80%)9805(Top 752%)
Finish26.22 mi1.02 mi19780-2017560-1177560-11723215(Top 82%)9781(Top 80%)9781(Top 751%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

20833

Females

7909

F50-54

7909

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20696

Females

7861

F50-54

7861

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

20833

Females

7909

F50-54

7909

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19783

Females

7365

F50-54

7365

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

20569

Females

7815

F50-54

7815

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

18689

Females

6812

F50-54

6812

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18239

Females

6712

F50-54

6712

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18533

Females

7026

F50-54

7026

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

19052

Females

7363

F50-54

7363

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16264

Females

5949

F50-54

5949

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18261

Females

7122

F50-54

7122

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

18999

Females

7553

F50-54

7553

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20382

Females

8362

F50-54

8362

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23258

Females

9805

F50-54

9805

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

23215

Females

9781

F50-54

9781

Passing Analysis

Category:
Athletes Passed
2166
Passed By
1473
Net Change
+693
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20473
5K → 10K238347-109#20473#20582
10K → 15K177228-51#20582#20633
15K → 20K28386+197#20633#20436
20K → Half2726+1#20436#20435
Half → 25K33942+297#20435#20138
25K → 30K44653+393#20138#19745
30K → 20M13450+84#19745#19661
20M → 21M12395+28#19661#19633
21M → 35K1252+123#19633#19510
35K → 23M12659+67#19510#19443
23M → 24M7255+17#19443#19426
24M → 40K5197-46#19426#19472
40K → 25.2M10117-107#19472#19579
25.2M → Finish15216-201#19579#19780
TOTALS21661473+693
📊

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