Boston Marathon logo
BOSTON MARATHON 2025

Kristen Webster

Bib: 20912•F

TX

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:16/mi
25:40
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
51:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:26/mi
1:17:43
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:46:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:51/mi
1:52:33
↑ 19↓ 370.5%
25K· 15.53 mi
9:16/mi
2:15:01
↑ 66↓ 880.2%
30K· 18.64 mi
9:52/mi
2:45:39
↑ 181↓ 1480.2%
20M
9:59/mi
2:59:13
↑ 64↓ 500.2%
21M
10:54/mi
3:10:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
3:16:31
↑ 17↓ 861.7%
23M
8:58/mi
3:27:44
↑ 23↓ 630.6%
24M
9:00/mi
3:36:44
↓ 821.3%
40K· 24.85 mi
9:45/mi
3:45:04
↓ 200.3%
25.2M
10:35/mi
3:48:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:57:42
↑ 22↓ 21

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
Time1:52:33
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:05:09
Pace9:33 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3525:408:1625:40
8:16
-
10K
6.21 mi11:45:2751:328:1825:52
8:20
+0:04
15K
9.32 mi12:11:381:17:438:2026:11
8:26
+0:06
20K
12.43 mi12:40:261:46:318:3428:48
9:16
+0:50
Half
13.11 mi12:46:281:52:338:356:02
8:51
-0:25
25K
15.53 mi13:08:562:15:018:4122:28
9:16
+0:25
30K
18.64 mi13:39:342:45:398:5330:38
9:52
+0:36
20M
20.00 mi13:53:082:59:138:5813:34
9:59
+0:07
21M
21.00 mi14:04:023:10:079:0310:54
10:54
+0:55
35K
21.75 mi14:10:263:16:319:026:24
8:33
-2:21
23M
23.00 mi14:21:393:27:449:0211:13
8:58
+0:25
24M
24.00 mi14:30:393:36:449:029:00
9:00
+0:02
40K
24.85 mi14:38:593:45:049:038:20
9:45
+0:45
25.2M
25.20 mi14:42:383:48:439:053:39
10:35
+0:50
Finish
26.22 mi14:51:373:57:429:048:59
8:49
-1:46

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

9:04 /mi

Slowest Pace

10:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:07

35% of race

Time at Steady Pace

1:26:30

36% of race

Time at Slower Pace

1:07:05

28% of race

Average Pace: 9:04 /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 mi11:19:3525:408:1625:40
8:16
#18493
10K
6.21 mi11:45:2751:328:1825:52
8:20
#18573
15K
9.32 mi12:11:381:17:438:2026:11
8:26
#18637
20K
12.43 mi12:40:261:46:318:3428:48
9:16
#19721
Half
13.11 mi12:46:281:52:338:356:02
8:51
#19794
25K
15.53 mi13:08:562:15:018:4122:28
9:16
#20012
30K
18.64 mi13:39:342:45:398:5330:38
9:52
#20313
20M
20.00 mi13:53:082:59:138:5813:34
9:59
#20374
21M
21.00 mi14:04:023:10:079:0310:54
10:54
#20447
35K
21.75 mi14:10:263:16:319:026:24
8:33
#20283
23M
23.00 mi14:21:393:27:449:0211:13
8:58
#20077
24M
24.00 mi14:30:393:36:449:029:00
9:00
#19953
40K
24.85 mi14:38:593:45:049:038:20
9:45
#19951
25.2M
25.20 mi14:42:383:48:439:053:39
10:35
#19936
Finish
26.22 mi14:51:373:57:429:048:59
8:49
#19881
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi184936628662818887(Top 66%)6837(Top 56%)6837(Top 398%)
10K6.21 mi3.10 mi18573-806658-306658-3018733(Top 66%)6728(Top 55%)6728(Top 392%)
15K9.32 mi3.11 mi18637-646701-436701-4318887(Top 66%)6837(Top 56%)6837(Top 398%)
20K12.43 mi3.11 mi19721-10847314-6137314-61322181(Top 78%)8686(Top 71%)8686(Top 506%)
Half13.11 mi0.68 mi19794-737358-447358-4421137(Top 74%)8108(Top 66%)8108(Top 472%)
25K15.53 mi2.42 mi20012-2187488-1307488-13021045(Top 74%)8119(Top 66%)8119(Top 473%)
30K18.64 mi3.11 mi20313-3017709-2217709-22121190(Top 75%)8335(Top 68%)8335(Top 485%)
20M20.00 mi1.36 mi20374-617762-537762-5320891(Top 74%)8297(Top 68%)8297(Top 483%)
21M21.00 mi1.00 mi20447-737827-657827-6521133(Top 74%)8513(Top 70%)8513(Top 496%)
35K21.75 mi0.75 mi20283+1647753+747753+7415866(Top 56%)5723(Top 47%)5723(Top 333%)
23M23.00 mi1.25 mi20077+2067665+887665+8816071(Top 57%)5936(Top 49%)5936(Top 346%)
24M24.00 mi1.00 mi19953+1247618+477618+4717407(Top 61%)6720(Top 55%)6720(Top 391%)
40K24.85 mi0.85 mi19951+27629-117629-1119642(Top 69%)7963(Top 65%)7963(Top 464%)
25.2M25.20 mi0.35 mi19936+157631-27631-219338(Top 68%)7826(Top 64%)7826(Top 456%)
Finish26.22 mi1.02 mi19881+557617+147617+1418160(Top 64%)7169(Top 59%)7169(Top 417%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18887

Females

6837

F40-44

6837

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18733

Females

6728

F40-44

6728

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18887

Females

6837

F40-44

6837

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22181

Females

8686

F40-44

8686

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

21137

Females

8108

F40-44

8108

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

21045

Females

8119

F40-44

8119

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

21190

Females

8335

F40-44

8335

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20891

Females

8297

F40-44

8297

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

21133

Females

8513

F40-44

8513

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15866

Females

5723

F40-44

5723

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16071

Females

5936

F40-44

5936

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17407

Females

6720

F40-44

6720

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19642

Females

7963

F40-44

7963

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19338

Females

7826

F40-44

7826

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18160

Females

7169

F40-44

7169

Passing Analysis

Category:
Athletes Passed
1513
Passed By
2901
Net Change
-1388
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18493
5K → 10K230310-80#18493#18573
10K → 15K165229-64#18573#18637
15K → 20K271111-1084#18637#19721
20K → Half1184-73#19721#19794
Half → 25K98316-218#19794#20012
25K → 30K144445-301#20012#20313
30K → 20M83144-61#20313#20374
20M → 21M60133-73#20374#20447
21M → 35K1651+164#20447#20283
35K → 23M2115+206#20283#20077
23M → 24M13410+124#20077#19953
24M → 40K6260+2#19953#19951
40K → 25.2M3621+15#19951#19936
25.2M → Finish8732+55#19936#19881
TOTALS15132901-1388
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing