Boston Marathon logo
BOSTON MARATHON 2025

Kerry Harnois-Gosselin

Bib: 23072•F

MA

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
26:11
Rank: #19466
Start → 5K
26:11 | 8:26/mi
10K· 6.21 mi
52:05
Rank: #19137 (+329)
5K → 10K
25:54 | 8:20/mi
15K· 9.32 mi
1:17:47
Rank: #18698 (+439)
10K → 15K
25:42 | 8:16/mi
20K· 12.43 mi
1:44:26
Rank: #18679 (+19)
15K → 20K
26:39 | 8:35/mi
Half· 13.11 mi
1:50:15
Rank: #18708 (-29)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:11:47
Rank: #18820 (-112)
Half → 25K
21:32 | 8:53/mi
30K· 18.64 mi
2:47:21
Rank: #20761 (-1941)
25K → 30K
35:34 | 11:27/mi
20M
3:00:34
Rank: #20690 (+71)
30K → 20M
13:13 | 9:44/mi
21M
3:11:33
Rank: #20735 (-45)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:18:51
Rank: #20773 (-38)
21M → 35K
7:18 | 9:45/mi
23M
3:31:36
Rank: #20828 (-55)
35K → 23M
12:45 | 10:11/mi
24M
3:41:58
Rank: #20925 (-97)
23M → 24M
10:22 | 10:22/mi
40K· 24.85 mi
3:52:12
Rank: #21168 (-243)
24M → 40K
10:14 | 11:58/mi
25.2M
3:55:42
Rank: #21101 (+67)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
4:04:37
Rank: #20990 (+111)
25.2M → Finish
8:55 | 8:45/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
Time1:50:15
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:14:22
Pace10:15 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0526:118:2626:11
8:26
-
10K
6.21 mi11:49:5952:058:2325:54
8:20
-0:06
15K
9.32 mi12:15:411:17:478:2125:42
8:16
-0:04
20K
12.43 mi12:42:201:44:268:2426:39
8:35
+0:19
Half
13.11 mi12:48:091:50:158:255:49
8:32
-0:03
25K
15.53 mi13:09:412:11:478:2921:32
8:53
+0:21
30K
18.64 mi13:45:152:47:218:5935:34
11:27
+2:34
20M
20.00 mi13:58:283:00:349:0213:13
9:44
-1:43
21M
21.00 mi14:09:273:11:339:0710:59
10:59
+1:15
35K
21.75 mi14:16:453:18:519:097:18
9:45
-1:14
23M
23.00 mi14:29:303:31:369:1212:45
10:11
+0:26
24M
24.00 mi14:39:523:41:589:1510:22
10:22
+0:11
40K
24.85 mi14:50:063:52:129:2110:14
11:58
+1:36
25.2M
25.20 mi14:53:363:55:429:213:30
10:09
-1:49
Finish
26.22 mi15:02:314:04:379:208:55
8:45
-1:24

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

8:16 /mi

Average Pace

9:20 /mi

Slowest Pace

11:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:42

58% of race

Time at Steady Pace

36:46

15% of race

Time at Slower Pace

1:07:09

27% of race

Average Pace: 9:20 /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 mi11:24:0526:118:2626:11
8:26
#19466
10K
6.21 mi11:49:5952:058:2325:54
8:20
#19137
15K
9.32 mi12:15:411:17:478:2125:42
8:16
#18698
20K
12.43 mi12:42:201:44:268:2426:39
8:35
#18679
Half
13.11 mi12:48:091:50:158:255:49
8:32
#18708
25K
15.53 mi13:09:412:11:478:2921:32
8:53
#18820
30K
18.64 mi13:45:152:47:218:5935:34
11:27
#20761
20M
20.00 mi13:58:283:00:349:0213:13
9:44
#20690
21M
21.00 mi14:09:273:11:339:0710:59
10:59
#20735
35K
21.75 mi14:16:453:18:519:097:18
9:45
#20773
23M
23.00 mi14:29:303:31:369:1212:45
10:11
#20828
24M
24.00 mi14:39:523:41:589:1510:22
10:22
#20925
40K
24.85 mi14:50:063:52:129:2110:14
11:58
#21168
25.2M
25.20 mi14:53:363:55:429:213:30
10:09
#21101
Finish
26.22 mi15:02:314:04:379:208:55
8:45
#20990
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi194667178717817873(Top 63%)6246(Top 51%)6246(Top 479%)
10K6.21 mi3.10 mi19137+3296982+1966982+19618804(Top 66%)6768(Top 55%)6768(Top 519%)
15K9.32 mi3.11 mi18698+4396732+2506732+25017873(Top 63%)6246(Top 51%)6246(Top 479%)
20K12.43 mi3.11 mi18679+196725+76725+718741(Top 66%)6766(Top 55%)6766(Top 519%)
Half13.11 mi0.68 mi18708-296742-176742-1719450(Top 68%)7171(Top 59%)7171(Top 550%)
25K15.53 mi2.42 mi18820-1126809-676809-6719364(Top 68%)7187(Top 59%)7187(Top 552%)
30K18.64 mi3.11 mi20761-19417962-11537962-115324780(Top 87%)10284(Top 84%)10284(Top 789%)
20M20.00 mi1.36 mi20690+717938+247938+2420043(Top 71%)7817(Top 64%)7817(Top 600%)
21M21.00 mi1.00 mi20735-457977-397977-3921360(Top 75%)8626(Top 71%)8626(Top 662%)
35K21.75 mi0.75 mi20773-388019-428019-4221206(Top 75%)8614(Top 70%)8614(Top 661%)
23M23.00 mi1.25 mi20828-558066-478066-4721064(Top 74%)8590(Top 70%)8590(Top 659%)
24M24.00 mi1.00 mi20925-978139-738139-7322453(Top 79%)9366(Top 77%)9366(Top 719%)
40K24.85 mi0.85 mi21168-2438293-1548293-15424889(Top 88%)10623(Top 87%)10623(Top 815%)
25.2M25.20 mi0.35 mi21101+678265+288265+2817772(Top 63%)7024(Top 57%)7024(Top 539%)
Finish26.22 mi1.02 mi20990+1118219+468219+4617820(Top 63%)7003(Top 57%)7003(Top 537%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

17873

Females

6246

F50-54

6246

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18804

Females

6768

F50-54

6768

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

17873

Females

6246

F50-54

6246

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

18741

Females

6766

F50-54

6766

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19450

Females

7171

F50-54

7171

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19364

Females

7187

F50-54

7187

25K→30K

15.5 - 18.6 mi

Top 87%
×9stories
+181ft-148ft

Overall

24780

Females

10284

F50-54

10284

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20043

Females

7817

F50-54

7817

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21360

Females

8626

F50-54

8626

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

21206

Females

8614

F50-54

8614

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21064

Females

8590

F50-54

8590

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

22453

Females

9366

F50-54

9366

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

24889

Females

10623

F50-54

10623

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17772

Females

7024

F50-54

7024

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

17820

Females

7003

F50-54

7003

Passing Analysis

Category:
Athletes Passed
1906
Passed By
3430
Net Change
-1524
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19466
5K → 10K465136+329#19466#19137
10K → 15K47940+439#19137#18698
15K → 20K209190+19#18698#18679
20K → Half3261-29#18679#18708
Half → 25K130242-112#18708#18820
25K → 30K201961-1941#18820#20761
30K → 20M13766+71#20761#20690
20M → 21M80125-45#20690#20735
21M → 35K4886-38#20735#20773
35K → 23M73128-55#20773#20828
23M → 24M34131-97#20828#20925
24M → 40K10253-243#20925#21168
40K → 25.2M692+67#21168#21101
25.2M → Finish1209+111#21101#20990
TOTALS19063430-1524
📊

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