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BOSTON MARATHON 2025

Katie Harper

Bib: 20668•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:54
Rank: #18958
Start → 5K
25:54 | 8:20/mi
10K· 6.21 mi
51:45
Rank: #18799 (+159)
5K → 10K
25:51 | 8:19/mi
15K· 9.32 mi
1:17:49
Rank: #18722 (+77)
10K → 15K
26:04 | 8:23/mi
20K· 12.43 mi
1:44:25
Rank: #18671 (+51)
15K → 20K
26:36 | 8:34/mi
Half· 13.11 mi
1:50:14
Rank: #18699 (-28)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:11:54
Rank: #18855 (-156)
Half → 25K
21:40 | 8:56/mi
30K· 18.64 mi
2:41:42
Rank: #19199 (-344)
25K → 30K
29:48 | 9:36/mi
20M
2:54:44
Rank: #19216 (-17)
30K → 20M
13:02 | 9:35/mi
21M
3:05:31
Rank: #19355 (-139)
20M → 21M
10:47 | 10:47/mi
35K· 21.75 mi
3:12:00
Rank: #19267 (+88)
21M → 35K
6:29 | 8:40/mi
23M
3:22:45
Rank: #18960 (+307)
35K → 23M
10:45 | 8:35/mi
24M
3:31:19
Rank: #18798 (+162)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:38:58
Rank: #18687 (+111)
24M → 40K
7:39 | 8:57/mi
25.2M
3:42:34
Rank: #18681 (+6)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:51:36
Rank: #18666 (+15)
25.2M → Finish
9:02 | 8:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:14
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:01:22
Pace9:15 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4225:548:2025:54
8:20
-
10K
6.21 mi11:45:3351:458:2025:51
8:19
-0:01
15K
9.32 mi12:11:371:17:498:2126:04
8:23
+0:04
20K
12.43 mi12:38:131:44:258:2426:36
8:34
+0:11
Half
13.11 mi12:44:021:50:148:255:49
8:32
-0:02
25K
15.53 mi13:05:422:11:548:2921:40
8:56
+0:24
30K
18.64 mi13:35:302:41:428:4029:48
9:36
+0:40
20M
20.00 mi13:48:322:54:448:4413:02
9:35
-0:01
21M
21.00 mi13:59:193:05:318:5010:47
10:47
+1:12
35K
21.75 mi14:05:483:12:008:506:29
8:40
-2:07
23M
23.00 mi14:16:333:22:458:4910:45
8:35
-0:05
24M
24.00 mi14:25:073:31:198:488:34
8:34
-0:01
40K
24.85 mi14:32:463:38:588:497:39
8:57
+0:23
25.2M
25.20 mi14:36:223:42:348:503:36
10:26
+1:29
Finish
26.22 mi14:45:243:51:368:509:02
8:52
-1:34

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

8:19 /mi

Average Pace

8:50 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:54:23

75% of race

Time at Slower Pace

57:13

25% of race

Average Pace: 8:50 /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 mi11:19:4225:548:2025:54
8:20
#18958
10K
6.21 mi11:45:3351:458:2025:51
8:19
#18799
15K
9.32 mi12:11:371:17:498:2126:04
8:23
#18722
20K
12.43 mi12:38:131:44:258:2426:36
8:34
#18671
Half
13.11 mi12:44:021:50:148:255:49
8:32
#18699
25K
15.53 mi13:05:422:11:548:2921:40
8:56
#18855
30K
18.64 mi13:35:302:41:428:4029:48
9:36
#19199
20M
20.00 mi13:48:322:54:448:4413:02
9:35
#19216
21M
21.00 mi13:59:193:05:318:5010:47
10:47
#19355
35K
21.75 mi14:05:483:12:008:506:29
8:40
#19267
23M
23.00 mi14:16:333:22:458:4910:45
8:35
#18960
24M
24.00 mi14:25:073:31:198:488:34
8:34
#18798
40K
24.85 mi14:32:463:38:588:497:39
8:57
#18687
25.2M
25.20 mi14:36:223:42:348:503:36
10:26
#18681
Finish
26.22 mi14:45:243:51:368:509:02
8:52
#18666
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi189586887688718649(Top 66%)6695(Top 55%)6695(Top 390%)
10K6.21 mi3.10 mi18799+1596794+936794+9318686(Top 66%)6701(Top 55%)6701(Top 390%)
15K9.32 mi3.11 mi18722+776747+476747+4718649(Top 66%)6695(Top 55%)6695(Top 390%)
20K12.43 mi3.11 mi18671+516721+266721+2618625(Top 66%)6701(Top 55%)6701(Top 390%)
Half13.11 mi0.68 mi18699-286737-166737-1619413(Top 68%)7134(Top 58%)7134(Top 415%)
25K15.53 mi2.42 mi18855-1566828-916828-9119625(Top 69%)7325(Top 60%)7325(Top 426%)
30K18.64 mi3.11 mi19199-3447074-2467074-24620317(Top 72%)7829(Top 64%)7829(Top 456%)
20M20.00 mi1.36 mi19216-177104-307104-3019581(Top 69%)7569(Top 62%)7569(Top 441%)
21M21.00 mi1.00 mi19355-1397204-1007204-10020789(Top 73%)8334(Top 68%)8334(Top 485%)
35K21.75 mi0.75 mi19267+887166+387166+3816538(Top 58%)6097(Top 50%)6097(Top 355%)
23M23.00 mi1.25 mi18960+3077026+1407026+14013877(Top 49%)4749(Top 39%)4749(Top 276%)
24M24.00 mi1.00 mi18798+1626956+706956+7014987(Top 53%)5382(Top 44%)5382(Top 313%)
40K24.85 mi0.85 mi18687+1116927+296927+2916043(Top 56%)6070(Top 50%)6070(Top 353%)
25.2M25.20 mi0.35 mi18681+66937-106937-1018824(Top 66%)7535(Top 62%)7535(Top 439%)
Finish26.22 mi1.02 mi18666+156937693718383(Top 65%)7281(Top 60%)7281(Top 424%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18649

Females

6695

F40-44

6695

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18686

Females

6701

F40-44

6701

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18649

Females

6695

F40-44

6695

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

18625

Females

6701

F40-44

6701

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19413

Females

7134

F40-44

7134

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19625

Females

7325

F40-44

7325

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

20317

Females

7829

F40-44

7829

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19581

Females

7569

F40-44

7569

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20789

Females

8334

F40-44

8334

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

16538

Females

6097

F40-44

6097

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

13877

Females

4749

F40-44

4749

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14987

Females

5382

F40-44

5382

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

16043

Females

6070

F40-44

6070

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18824

Females

7535

F40-44

7535

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

18383

Females

7281

F40-44

7281

Passing Analysis

Category:
Athletes Passed
2040
Passed By
1748
Net Change
+292
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18958
5K → 10K340181+159#18958#18799
10K → 15K226149+77#18799#18722
15K → 20K223172+51#18722#18671
20K → Half3159-28#18671#18699
Half → 25K119275-156#18699#18855
25K → 30K134478-344#18855#19199
30K → 20M103120-17#19199#19216
20M → 21M54193-139#19216#19355
21M → 35K946+88#19355#19267
35K → 23M3081+307#19267#18960
23M → 24M17412+162#18960#18798
24M → 40K12918+111#18798#18687
40K → 25.2M4034+6#18687#18681
25.2M → Finish6550+15#18681#18666
TOTALS20401748+292
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing