Boston Marathon logo
BOSTON MARATHON 2025

Kaitlin Heck

Bib: 28340•F

CA

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
27:31
Rank: #21795
Start → 5K
27:31 | 8:51/mi
10K· 6.21 mi
53:58
Rank: #20846 (+949)
5K → 10K
26:27 | 8:31/mi
15K· 9.32 mi
1:20:43
Rank: #20537 (+309)
10K → 15K
26:45 | 8:37/mi
20K· 12.43 mi
1:46:57
Rank: #19895 (+642)
15K → 20K
26:14 | 8:27/mi
Half· 13.11 mi
1:52:38
Rank: #19824 (+71)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:13:35
Rank: #19507 (+317)
Half → 25K
20:57 | 8:38/mi
30K· 18.64 mi
2:41:29
Rank: #19119 (+388)
25K → 30K
27:54 | 8:59/mi
20M
2:53:50
Rank: #18989 (+130)
30K → 20M
12:21 | 9:05/mi
21M
3:03:23
Rank: #18800 (+189)
20M → 21M
9:33 | 9:33/mi
35K· 21.75 mi
3:09:56
Rank: #18724 (+76)
21M → 35K
6:33 | 8:45/mi
23M
3:21:23
Rank: #18620 (+104)
35K → 23M
11:27 | 9:09/mi
24M
3:30:20
Rank: #18552 (+68)
23M → 24M
8:57 | 8:57/mi
40K· 24.85 mi
3:37:59
Rank: #18429 (+123)
24M → 40K
7:39 | 8:57/mi
25.2M
3:41:12
Rank: #18363 (+66)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:49:31
Rank: #18212 (+151)
25.2M → Finish
8:19 | 8:10/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
Time1:52:38
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time1:56:53
Pace8:55 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:2627:318:5127:31
8:51
-
10K
6.21 mi12:14:5353:588:4126:27
8:31
-0:20
15K
9.32 mi12:41:381:20:438:4026:45
8:37
+0:06
20K
12.43 mi13:07:521:46:578:3626:14
8:27
-0:10
Half
13.11 mi13:13:331:52:388:355:41
8:20
-0:07
25K
15.53 mi13:34:302:13:358:3620:57
8:38
+0:18
30K
18.64 mi14:02:242:41:298:4027:54
8:59
+0:21
20M
20.00 mi14:14:452:53:508:4112:21
9:05
+0:06
21M
21.00 mi14:24:183:03:238:449:33
9:33
+0:28
35K
21.75 mi14:30:513:09:568:446:33
8:45
-0:48
23M
23.00 mi14:42:183:21:238:4511:27
9:09
+0:24
24M
24.00 mi14:51:153:30:208:468:57
8:57
-0:12
40K
24.85 mi14:58:543:37:598:467:39
8:57
0:00
25.2M
25.20 mi15:02:073:41:128:473:13
9:20
+0:23
Finish
26.22 mi15:10:263:49:318:468:19
8:10
-1:10

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

8:10 /mi

Average Pace

8:46 /mi

Slowest Pace

9:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:03

72% of race

Time at Steady Pace

1:04:28

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:45 /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 mi11:48:2627:318:5127:31
8:51
#21795
10K
6.21 mi12:14:5353:588:4126:27
8:31
#20846
15K
9.32 mi12:41:381:20:438:4026:45
8:37
#20537
20K
12.43 mi13:07:521:46:578:3626:14
8:27
#19895
Half
13.11 mi13:13:331:52:388:355:41
8:20
#19824
25K
15.53 mi13:34:302:13:358:3620:57
8:38
#19507
30K
18.64 mi14:02:242:41:298:4027:54
8:59
#19119
20M
20.00 mi14:14:452:53:508:4112:21
9:05
#18989
21M
21.00 mi14:24:183:03:238:449:33
9:33
#18800
35K
21.75 mi14:30:513:09:568:446:33
8:45
#18724
23M
23.00 mi14:42:183:21:238:4511:27
9:09
#18620
24M
24.00 mi14:51:153:30:208:468:57
8:57
#18552
40K
24.85 mi14:58:543:37:598:467:39
8:57
#18429
25.2M
25.20 mi15:02:073:41:128:473:13
9:20
#18363
Finish
26.22 mi15:10:263:49:318:468:19
8:10
#18212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi217958508850819983(Top 70%)7428(Top 61%)7428(Top 136%)
10K6.21 mi3.10 mi20846+9497963+5457963+54519886(Top 70%)7404(Top 61%)7404(Top 135%)
15K9.32 mi3.11 mi20537+3097773+1907773+19019983(Top 70%)7428(Top 61%)7428(Top 136%)
20K12.43 mi3.11 mi19895+6427413+3607413+36017848(Top 63%)6261(Top 51%)6261(Top 114%)
Half13.11 mi0.68 mi19824+717376+377376+3718188(Top 64%)6438(Top 53%)6438(Top 118%)
25K15.53 mi2.42 mi19507+3177202+1747202+17418063(Top 64%)6465(Top 53%)6465(Top 118%)
30K18.64 mi3.11 mi19119+3887029+1737029+17317597(Top 62%)6361(Top 52%)6361(Top 116%)
20M20.00 mi1.36 mi18989+1306973+566973+5617271(Top 61%)6295(Top 51%)6295(Top 115%)
21M21.00 mi1.00 mi18800+1896887+866887+8616336(Top 58%)5895(Top 48%)5895(Top 108%)
35K21.75 mi0.75 mi18724+766864+236864+2317065(Top 60%)6386(Top 52%)6386(Top 117%)
23M23.00 mi1.25 mi18620+1046832+326832+3217098(Top 60%)6508(Top 53%)6508(Top 119%)
24M24.00 mi1.00 mi18552+686826+66826+617138(Top 60%)6573(Top 54%)6573(Top 120%)
40K24.85 mi0.85 mi18429+1236782+446782+4416038(Top 56%)6065(Top 50%)6065(Top 111%)
25.2M25.20 mi0.35 mi18363+666757+256757+2513726(Top 48%)4906(Top 40%)4906(Top 90%)
Finish26.22 mi1.02 mi18212+1516687+706687+7014064(Top 50%)4995(Top 41%)4995(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19983

Females

7428

F18-39

7428

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

19886

Females

7404

F18-39

7404

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19983

Females

7428

F18-39

7428

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

17848

Females

6261

F18-39

6261

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18188

Females

6438

F18-39

6438

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18063

Females

6465

F18-39

6465

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

17597

Females

6361

F18-39

6361

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

17271

Females

6295

F18-39

6295

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16336

Females

5895

F18-39

5895

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

17065

Females

6386

F18-39

6386

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

17098

Females

6508

F18-39

6508

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

17138

Females

6573

F18-39

6573

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

16038

Females

6065

F18-39

6065

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13726

Females

4906

F18-39

4906

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14064

Females

4995

F18-39

4995

Passing Analysis

Category:
Athletes Passed
3978
Passed By
395
Net Change
+3583
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21795
5K → 10K98536+949#21795#20846
10K → 15K38475+309#20846#20537
15K → 20K6508+642#20537#19895
20K → Half754+71#19895#19824
Half → 25K34023+317#19824#19507
25K → 30K43749+388#19507#19119
30K → 20M17242+130#19119#18989
20M → 21M21223+189#18989#18800
21M → 35K9519+76#18800#18724
35K → 23M15349+104#18724#18620
23M → 24M10537+68#18620#18552
24M → 40K13613+123#18552#18429
40K → 25.2M671+66#18429#18363
25.2M → Finish16716+151#18363#18212
TOTALS3978395+3583
📊

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