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BOSTON MARATHON 2025

Kathryn Harris

Bib: 30784•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
37:46
Rank: #28271
Start → 5K
37:46 | 12:09/mi
10K· 6.21 mi
1:14:34
Rank: #28137 (+134)
5K → 10K
36:48 | 11:51/mi
15K· 9.32 mi
1:55:05
Rank: #28172 (-35)
10K → 15K
40:31 | 13:02/mi
20K· 12.43 mi
2:37:28
Rank: #28189 (-17)
15K → 20K
42:23 | 13:39/mi
Half· 13.11 mi
2:46:45
Rank: #28196 (-7)
20K → Half
9:17 | 13:36/mi
25K· 15.53 mi
3:21:59
Rank: #28204 (-8)
Half → 25K
35:14 | 14:32/mi
30K· 18.64 mi
4:10:38
Rank: #28256 (-52)
25K → 30K
48:39 | 15:40/mi
20M
4:31:51
Rank: #28267 (-11)
30K → 20M
21:13 | 15:37/mi
21M
4:47:20
Rank: #28255 (+12)
20M → 21M
15:29 | 15:29/mi
35K· 21.75 mi
4:58:27
Rank: #28257 (-2)
21M → 35K
11:07 | 14:52/mi
23M
5:17:06
Rank: #28257
35K → 23M
18:39 | 14:54/mi
24M
5:30:08
Rank: #28238 (+19)
23M → 24M
13:02 | 13:02/mi
40K· 24.85 mi
5:44:22
Rank: #28253 (-15)
24M → 40K
14:14 | 16:39/mi
25.2M
5:50:24
Rank: #28261 (-8)
40K → 25.2M
6:02 | 17:30/mi
Finish· 26.22 mi
6:02:54
Rank: #28247 (+14)
25.2M → Finish
12:30 | 12:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:46:45
Pace12:43 /mi
2nd Half
Distance13.11 mi
Time3:16:09
Pace14:58 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5237:4612:0937:46
12:09
-
10K
6.21 mi12:30:401:14:3412:0036:48
11:51
-0:18
15K
9.32 mi13:11:111:55:0512:2140:31
13:02
+1:11
20K
12.43 mi13:53:342:37:2812:4042:23
13:39
+0:37
Half
13.11 mi14:02:512:46:4512:439:17
13:36
-0:03
25K
15.53 mi14:38:053:21:5913:0035:14
14:32
+0:56
30K
18.64 mi15:26:444:10:3813:2748:39
15:40
+1:08
20M
20.00 mi15:47:574:31:5113:3621:13
15:37
-0:03
21M
21.00 mi16:03:264:47:2013:4115:29
15:29
-0:08
35K
21.75 mi16:14:334:58:2713:4311:07
14:52
-0:37
23M
23.00 mi16:33:125:17:0613:4718:39
14:54
+0:02
24M
24.00 mi16:46:145:30:0813:4513:02
13:02
-1:52
40K
24.85 mi17:00:285:44:2213:5114:14
16:39
+3:37
25.2M
25.20 mi17:06:305:50:2413:546:02
17:30
+0:51
Finish
26.22 mi17:19:006:02:5413:5112:30
12:16
-5:14

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

11:51 /mi

Average Pace

13:51 /mi

Slowest Pace

17:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:17

53% of race

Time at Steady Pace

1:05:00

18% of race

Time at Slower Pace

1:45:37

29% of race

Average Pace: 13:50 /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 mi11:53:5237:4612:0937:46
12:09
#28271
10K
6.21 mi12:30:401:14:3412:0036:48
11:51
#28137
15K
9.32 mi13:11:111:55:0512:2140:31
13:02
#28172
20K
12.43 mi13:53:342:37:2812:4042:23
13:39
#28189
Half
13.11 mi14:02:512:46:4512:439:17
13:36
#28196
25K
15.53 mi14:38:053:21:5913:0035:14
14:32
#28204
30K
18.64 mi15:26:444:10:3813:2748:39
15:40
#28256
20M
20.00 mi15:47:574:31:5113:3621:13
15:37
#28267
21M
21.00 mi16:03:264:47:2013:4115:29
15:29
#28255
35K
21.75 mi16:14:334:58:2713:4311:07
14:52
#28257
23M
23.00 mi16:33:125:17:0613:4718:39
14:54
#28257
24M
24.00 mi16:46:145:30:0813:4513:02
13:02
#28238
40K
24.85 mi17:00:285:44:2213:5114:14
16:39
#28253
25.2M
25.20 mi17:06:305:50:2413:546:02
17:30
#28261
Finish
26.22 mi17:19:006:02:5413:5112:30
12:16
#28247
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi28271121391213928181(Top 99%)12098(Top 99%)12098(Top 667%)
10K6.21 mi3.10 mi28137+13412056+8312056+8327866(Top 98%)11884(Top 97%)11884(Top 655%)
15K9.32 mi3.11 mi28172-3512077-2112077-2128181(Top 99%)12098(Top 99%)12098(Top 667%)
20K12.43 mi3.11 mi28189-1712097-2012097-2028125(Top 99%)12074(Top 99%)12074(Top 666%)
Half13.11 mi0.68 mi28196-712101-412101-428195(Top 99%)12126(Top 99%)12126(Top 669%)
25K15.53 mi2.42 mi28204-812112-1112112-1128105(Top 99%)12075(Top 99%)12075(Top 666%)
30K18.64 mi3.11 mi28256-5212151-3912151-3928210(Top 99%)12149(Top 99%)12149(Top 670%)
20M20.00 mi1.36 mi28267-1112159-812159-828072(Top 99%)12090(Top 99%)12090(Top 667%)
21M21.00 mi1.00 mi28255+1212154+512154+527518(Top 97%)11825(Top 97%)11825(Top 652%)
35K21.75 mi0.75 mi28257-212157-312157-328035(Top 99%)12094(Top 99%)12094(Top 667%)
23M23.00 mi1.25 mi2825712160-312160-327872(Top 98%)12036(Top 98%)12036(Top 664%)
24M24.00 mi1.00 mi28238+1912151+912151+926892(Top 95%)11586(Top 95%)11586(Top 639%)
40K24.85 mi0.85 mi28253-1512161-1012161-1028210(Top 99%)12171(Top 100%)12171(Top 671%)
25.2M25.20 mi0.35 mi28261-812165-412165-428146(Top 99%)12159(Top 99%)12159(Top 671%)
Finish26.22 mi1.02 mi28247+1412158+712158+727077(Top 95%)11668(Top 95%)11668(Top 644%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

28181

Females

12098

F45-49

12098

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

27866

Females

11884

F45-49

11884

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

28181

Females

12098

F45-49

12098

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

28125

Females

12074

F45-49

12074

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

28195

Females

12126

F45-49

12126

Half→25K

13.1 - 15.5 mi

Top 99%
×4stories
+66ft-88ft

Overall

28105

Females

12075

F45-49

12075

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

28210

Females

12149

F45-49

12149

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

28072

Females

12090

F45-49

12090

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

27518

Females

11825

F45-49

11825

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

28035

Females

12094

F45-49

12094

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

27872

Females

12036

F45-49

12036

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

26892

Females

11586

F45-49

11586

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28210

Females

12171

F45-49

12171

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28146

Females

12159

F45-49

12159

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2stories
+22ft-21ft

Overall

27077

Females

11668

F45-49

11668

Passing Analysis

Category:
Athletes Passed
289
Passed By
265
Net Change
+24
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28271
5K → 10K1395+134#28271#28137
10K → 15K1954-35#28137#28172
15K → 20K2643-17#28172#28189
20K → Half613-7#28189#28196
Half → 25K1927-8#28196#28204
25K → 30K1062-52#28204#28256
30K → 20M516-11#28256#28267
20M → 21M120+12#28267#28255
21M → 35K24-2#28255#28257
35K → 23M880#28257#28257
23M → 24M212+19#28257#28238
24M → 40K419-15#28238#28253
40K → 25.2M210-8#28253#28261
25.2M → Finish162+14#28261#28247
TOTALS289265+24
📊

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