Boston Marathon logo
BOSTON MARATHON 2025

Kristen Williams

Bib: 15938•F

AL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 24%
Division (F18-39)
#0 / 5469
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:37
Rank: #13148
Start → 5K
23:37 | 7:36/mi
10K· 6.21 mi
47:15
Rank: #13084 (+64)
5K → 10K
23:38 | 7:36/mi
15K· 9.32 mi
1:10:52
Rank: #12897 (+187)
10K → 15K
23:37 | 7:36/mi
20K· 12.43 mi
1:34:36
Rank: #12596 (+301)
15K → 20K
23:44 | 7:38/mi
Half· 13.11 mi
1:39:47
Rank: #12587 (+9)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:58:31
Rank: #12428 (+159)
Half → 25K
18:44 | 7:44/mi
30K· 18.64 mi
2:23:24
Rank: #12205 (+223)
25K → 30K
24:53 | 8:01/mi
20M
2:34:24
Rank: #12078 (+127)
30K → 20M
11:00 | 8:06/mi
21M
2:42:54
Rank: #11940 (+138)
20M → 21M
8:30 | 8:30/mi
35K· 21.75 mi
2:48:46
Rank: #11895 (+45)
21M → 35K
5:52 | 7:51/mi
23M
2:58:38
Rank: #11701 (+194)
35K → 23M
9:52 | 7:53/mi
24M
3:06:23
Rank: #11561 (+140)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
3:13:08
Rank: #11444 (+117)
24M → 40K
6:45 | 7:54/mi
25.2M
3:16:07
Rank: #11378 (+66)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:23:48
Rank: #11281 (+97)
25.2M → Finish
7:41 | 7:32/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
Time1:39:47
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:44:01
Pace7:56 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0523:377:3623:37
7:36
-
10K
6.21 mi11:18:4347:157:3623:38
7:36
0:00
15K
9.32 mi11:42:201:10:527:3623:37
7:36
0:00
20K
12.43 mi12:06:041:34:367:3723:44
7:38
+0:02
Half
13.11 mi12:11:151:39:477:375:11
7:36
-0:02
25K
15.53 mi12:29:591:58:317:3818:44
7:44
+0:08
30K
18.64 mi12:54:522:23:247:4224:53
8:01
+0:17
20M
20.00 mi13:05:522:34:247:4311:00
8:06
+0:05
21M
21.00 mi13:14:222:42:547:458:30
8:30
+0:24
35K
21.75 mi13:20:142:48:467:465:52
7:51
-0:39
23M
23.00 mi13:30:062:58:387:469:52
7:53
+0:02
24M
24.00 mi13:37:513:06:237:467:45
7:45
-0:08
40K
24.85 mi13:44:363:13:087:466:45
7:54
+0:09
25.2M
25.20 mi13:47:353:16:077:472:59
8:39
+0:45
Finish
26.22 mi13:55:163:23:487:477:41
7:32
-1:07

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

7:32 /mi

Average Pace

7:47 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:19

94% of race

Time at Steady Pace

11:29

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi10:55:0523:377:3623:37
7:36
#13148
10K
6.21 mi11:18:4347:157:3623:38
7:36
#13084
15K
9.32 mi11:42:201:10:527:3623:37
7:36
#12897
20K
12.43 mi12:06:041:34:367:3723:44
7:38
#12596
Half
13.11 mi12:11:151:39:477:375:11
7:36
#12587
25K
15.53 mi12:29:591:58:317:3818:44
7:44
#12428
30K
18.64 mi12:54:522:23:247:4224:53
8:01
#12205
20M
20.00 mi13:05:522:34:247:4311:00
8:06
#12078
21M
21.00 mi13:14:222:42:547:458:30
8:30
#11940
35K
21.75 mi13:20:142:48:467:465:52
7:51
#11895
23M
23.00 mi13:30:062:58:387:469:52
7:53
#11701
24M
24.00 mi13:37:513:06:237:467:45
7:45
#11561
40K
24.85 mi13:44:363:13:087:466:45
7:54
#11444
25.2M
25.20 mi13:47:353:16:077:472:59
8:39
#11378
Finish
26.22 mi13:55:163:23:487:477:41
7:32
#11281
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131483398339812609(Top 44%)3221(Top 26%)3221(Top 59%)
10K6.21 mi3.10 mi13084+643390+83390+813095(Top 46%)3425(Top 28%)3425(Top 63%)
15K9.32 mi3.11 mi12897+1873326+643326+6412609(Top 44%)3221(Top 26%)3221(Top 59%)
20K12.43 mi3.11 mi12596+3013201+1253201+12511882(Top 42%)2939(Top 24%)2939(Top 54%)
Half13.11 mi0.68 mi12587+93199+23199+212582(Top 44%)3266(Top 27%)3266(Top 60%)
25K15.53 mi2.42 mi12428+1593154+453154+4511768(Top 41%)3008(Top 25%)3008(Top 55%)
30K18.64 mi3.11 mi12205+2233101+533101+5311450(Top 40%)3005(Top 25%)3005(Top 55%)
20M20.00 mi1.36 mi12078+1273072+293072+2911089(Top 39%)2986(Top 24%)2986(Top 55%)
21M21.00 mi1.00 mi11940+1383040+323040+3210492(Top 37%)2851(Top 23%)2851(Top 52%)
35K21.75 mi0.75 mi11895+453038+23038+211159(Top 39%)3185(Top 26%)3185(Top 58%)
23M23.00 mi1.25 mi11701+1942981+572981+579192(Top 32%)2353(Top 19%)2353(Top 43%)
24M24.00 mi1.00 mi11561+1402949+322949+329487(Top 33%)2564(Top 21%)2564(Top 47%)
40K24.85 mi0.85 mi11444+1172928+212928+219466(Top 33%)2667(Top 22%)2667(Top 49%)
25.2M25.20 mi0.35 mi11378+662912+162912+169786(Top 34%)2912(Top 24%)2912(Top 53%)
Finish26.22 mi1.02 mi11281+972897+152897+159517(Top 34%)2772(Top 23%)2772(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

12609

Females

3221

F18-39

3221

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

13095

Females

3425

F18-39

3425

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

12609

Females

3221

F18-39

3221

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11882

Females

2939

F18-39

2939

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

12582

Females

3266

F18-39

3266

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11768

Females

3008

F18-39

3008

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

11450

Females

3005

F18-39

3005

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

11089

Females

2986

F18-39

2986

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

10492

Females

2851

F18-39

2851

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

11159

Females

3185

F18-39

3185

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

9192

Females

2353

F18-39

2353

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

9487

Females

2564

F18-39

2564

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9466

Females

2667

F18-39

2667

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9786

Females

2912

F18-39

2912

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9517

Females

2772

F18-39

2772

Passing Analysis

Category:
Athletes Passed
2746
Passed By
879
Net Change
+1867
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13148
5K → 10K312248+64#13148#13084
10K → 15K314127+187#13084#12897
15K → 20K36362+301#12897#12596
20K → Half3223+9#12596#12587
Half → 25K23172+159#12587#12428
25K → 30K347124+223#12428#12205
30K → 20M18053+127#12205#12078
20M → 21M17032+138#12078#11940
21M → 35K7833+45#11940#11895
35K → 23M21420+194#11895#11701
23M → 24M16424+140#11701#11561
24M → 40K14225+117#11561#11444
40K → 25.2M693+66#11444#11378
25.2M → Finish13033+97#11378#11281
TOTALS2746879+1867
📊

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