Boston Marathon logo
BOSTON MARATHON 2025

Kathleen Davidson

Bib: 20101•F

NY

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:32
Rank: #20150
Start → 5K
26:32 | 8:32/mi
10K· 6.21 mi
53:31
Rank: #20465 (-315)
5K → 10K
26:59 | 8:41/mi
15K· 9.32 mi
1:20:46
Rank: #20565 (-100)
10K → 15K
27:15 | 8:46/mi
20K· 12.43 mi
1:48:54
Rank: #20738 (-173)
15K → 20K
28:08 | 9:03/mi
Half· 13.11 mi
1:54:55
Rank: #20759 (-21)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:16:49
Rank: #20671 (+88)
Half → 25K
21:54 | 9:02/mi
30K· 18.64 mi
2:46:27
Rank: #20524 (+147)
25K → 30K
29:38 | 9:32/mi
20M
3:00:45
Rank: #20742 (-218)
30K → 20M
14:18 | 10:31/mi
21M
3:11:01
Rank: #20630 (+112)
20M → 21M
10:16 | 10:16/mi
35K· 21.75 mi
3:18:25
Rank: #20676 (-46)
21M → 35K
7:24 | 9:53/mi
23M
3:31:12
Rank: #20755 (-79)
35K → 23M
12:47 | 10:13/mi
24M
3:41:23
Rank: #20835 (-80)
23M → 24M
10:11 | 10:11/mi
40K· 24.85 mi
3:49:54
Rank: #20819 (+16)
24M → 40K
8:31 | 9:58/mi
25.2M
3:53:27
Rank: #20774 (+45)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
4:02:35
Rank: #20721 (+53)
25.2M → Finish
9:08 | 8:58/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
Time1:54:55
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:07:40
Pace9:44 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2526:328:3226:32
8:32
-
10K
6.21 mi11:54:2453:318:3726:59
8:41
+0:09
15K
9.32 mi12:21:391:20:468:4027:15
8:46
+0:05
20K
12.43 mi12:49:471:48:548:4628:08
9:03
+0:17
Half
13.11 mi12:55:481:54:558:466:01
8:49
-0:14
25K
15.53 mi13:17:422:16:498:4821:54
9:02
+0:13
30K
18.64 mi13:47:202:46:278:5629:38
9:32
+0:30
20M
20.00 mi14:01:383:00:459:0214:18
10:31
+0:59
21M
21.00 mi14:11:543:11:019:0610:16
10:16
-0:15
35K
21.75 mi14:19:183:18:259:077:24
9:53
-0:23
23M
23.00 mi14:32:053:31:129:1112:47
10:13
+0:20
24M
24.00 mi14:42:163:41:239:1310:11
10:11
-0:02
40K
24.85 mi14:50:473:49:549:158:31
9:58
-0:13
25.2M
25.20 mi14:54:203:53:279:163:33
10:18
+0:20
Finish
26.22 mi15:03:284:02:359:169:08
8:58
-1:20

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

8:32 /mi

Average Pace

9:16 /mi

Slowest Pace

10:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:57

60% of race

Time at Steady Pace

29:38

12% of race

Time at Slower Pace

1:07:00

28% of race

Average Pace: 9:15 /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 mi11:27:2526:328:3226:32
8:32
#20150
10K
6.21 mi11:54:2453:318:3726:59
8:41
#20465
15K
9.32 mi12:21:391:20:468:4027:15
8:46
#20565
20K
12.43 mi12:49:471:48:548:4628:08
9:03
#20738
Half
13.11 mi12:55:481:54:558:466:01
8:49
#20759
25K
15.53 mi13:17:422:16:498:4821:54
9:02
#20671
30K
18.64 mi13:47:202:46:278:5629:38
9:32
#20524
20M
20.00 mi14:01:383:00:459:0214:18
10:31
#20742
21M
21.00 mi14:11:543:11:019:0610:16
10:16
#20630
35K
21.75 mi14:19:183:18:259:077:24
9:53
#20676
23M
23.00 mi14:32:053:31:129:1112:47
10:13
#20755
24M
24.00 mi14:42:163:41:239:1310:11
10:11
#20835
40K
24.85 mi14:50:473:49:549:158:31
9:58
#20819
25.2M
25.20 mi14:54:203:53:279:163:33
10:18
#20774
Finish
26.22 mi15:03:284:02:359:169:08
8:58
#20721
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi201507591759120890(Top 74%)7939(Top 65%)7939(Top 145%)
10K6.21 mi3.10 mi20465-3157756-1657756-16520801(Top 73%)7920(Top 65%)7920(Top 145%)
15K9.32 mi3.11 mi20565-1007789-337789-3320890(Top 74%)7939(Top 65%)7939(Top 145%)
20K12.43 mi3.11 mi20738-1737891-1027891-10221254(Top 75%)8180(Top 67%)8180(Top 150%)
Half13.11 mi0.68 mi20759-217906-157906-1521031(Top 74%)8064(Top 66%)8064(Top 147%)
25K15.53 mi2.42 mi20671+887860+467860+4620068(Top 71%)7573(Top 62%)7573(Top 138%)
30K18.64 mi3.11 mi20524+1477824+367824+3620101(Top 71%)7714(Top 63%)7714(Top 141%)
20M20.00 mi1.36 mi20742-2187965-1417965-14122505(Top 79%)9157(Top 75%)9157(Top 167%)
21M21.00 mi1.00 mi20630+1127924+417924+4119268(Top 68%)7478(Top 61%)7478(Top 137%)
35K21.75 mi0.75 mi20676-467962-387962-3821602(Top 76%)8825(Top 72%)8825(Top 161%)
23M23.00 mi1.25 mi20755-798028-668028-6621156(Top 74%)8630(Top 71%)8630(Top 158%)
24M24.00 mi1.00 mi20835-808087-598087-5921893(Top 77%)9079(Top 74%)9079(Top 166%)
40K24.85 mi0.85 mi20819+168096-98096-920359(Top 72%)8339(Top 68%)8339(Top 152%)
25.2M25.20 mi0.35 mi20774+458085+118085+1118332(Top 65%)7320(Top 60%)7320(Top 134%)
Finish26.22 mi1.02 mi20721+538068+178068+1718881(Top 66%)7541(Top 62%)7541(Top 138%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

20890

Females

7939

F18-39

7939

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20801

Females

7920

F18-39

7920

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

20890

Females

7939

F18-39

7939

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

21254

Females

8180

F18-39

8180

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

21031

Females

8064

F18-39

8064

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20068

Females

7573

F18-39

7573

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20101

Females

7714

F18-39

7714

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

22505

Females

9157

F18-39

9157

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

19268

Females

7478

F18-39

7478

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21602

Females

8825

F18-39

8825

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21156

Females

8630

F18-39

8630

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21893

Females

9079

F18-39

9079

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20359

Females

8339

F18-39

8339

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18332

Females

7320

F18-39

7320

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18881

Females

7541

F18-39

7541

Passing Analysis

Category:
Athletes Passed
1463
Passed By
2034
Net Change
-571
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20150
5K → 10K152467-315#20150#20465
10K → 15K160260-100#20465#20565
15K → 20K127300-173#20565#20738
20K → Half2546-21#20738#20759
Half → 25K196108+88#20759#20671
25K → 30K289142+147#20671#20524
30K → 20M48266-218#20524#20742
20M → 21M15442+112#20742#20630
21M → 35K3581-46#20630#20676
35K → 23M63142-79#20676#20755
23M → 24M35115-80#20755#20835
24M → 40K5438+16#20835#20819
40K → 25.2M549+45#20819#20774
25.2M → Finish7118+53#20774#20721
TOTALS14632034-571
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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