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BOSTON MARATHON 2025

Kalyn Leahy

Bib: 30186•F

MA

0:00
0:00
/ mi
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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
32:56
Rank: #26959
Start → 5K
32:56 | 10:36/mi
10K· 6.21 mi
1:07:34
Rank: #27154 (-195)
5K → 10K
34:38 | 11:09/mi
15K· 9.32 mi
1:41:13
Rank: #26885 (+269)
10K → 15K
33:39 | 10:50/mi
20K· 12.43 mi
2:17:20
Rank: #26855 (+30)
15K → 20K
36:07 | 11:37/mi
Half· 13.11 mi
2:24:39
Rank: #26819 (+36)
20K → Half
7:19 | 10:43/mi
25K· 15.53 mi
2:57:30
Rank: #27042 (-223)
Half → 25K
32:51 | 13:33/mi
30K· 18.64 mi
3:43:57
Rank: #27299 (-257)
25K → 30K
46:27 | 14:57/mi
20M
4:03:25
Rank: #27345 (-46)
30K → 20M
19:28 | 14:19/mi
21M
4:21:50
Rank: #27487 (-142)
20M → 21M
18:25 | 18:25/mi
35K· 21.75 mi
4:32:28
Rank: #27506 (-19)
21M → 35K
10:38 | 14:13/mi
23M
4:47:17
Rank: #27425 (+81)
35K → 23M
14:49 | 11:50/mi
24M
5:00:17
Rank: #27419 (+6)
23M → 24M
13:00 | 13:00/mi
40K· 24.85 mi
5:15:22
Rank: #27512 (-93)
24M → 40K
15:05 | 17:38/mi
25.2M
5:20:07
Rank: #27499 (+13)
40K → 25.2M
4:45 | 13:46/mi
Finish· 26.22 mi
5:31:10
Rank: #27463 (+36)
25.2M → Finish
11:03 | 10:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:39
Pace11:02 /mi
2nd Half
Distance13.11 mi
Time3:06:31
Pace14:14 /mi
📊Positive Split: 28.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:3632:5610:3632:56
10:36
-
10K
6.21 mi12:31:141:07:3410:5234:38
11:09
+0:33
15K
9.32 mi13:04:531:41:1310:5233:39
10:50
-0:19
20K
12.43 mi13:41:002:17:2011:0336:07
11:37
+0:47
Half
13.11 mi13:48:192:24:3911:027:19
10:43
-0:54
25K
15.53 mi14:21:102:57:3011:2632:51
13:33
+2:50
30K
18.64 mi15:07:373:43:5712:0146:27
14:57
+1:24
20M
20.00 mi15:27:054:03:2512:1019:28
14:19
-0:38
21M
21.00 mi15:45:304:21:5012:2818:25
18:25
+4:06
35K
21.75 mi15:56:084:32:2812:3210:38
14:13
-4:12
23M
23.00 mi16:10:574:47:1712:2914:49
11:50
-2:23
24M
24.00 mi16:23:575:00:1712:3113:00
13:00
+1:10
40K
24.85 mi16:39:025:15:2212:4115:05
17:38
+4:38
25.2M
25.20 mi16:43:475:20:0712:424:45
13:46
-3:52
Finish
26.22 mi16:54:505:31:1012:3811:03
10:51
-2:55

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

10:36 /mi

Average Pace

12:38 /mi

Slowest Pace

18:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:42

47% of race

Time at Steady Pace

1:05:25

20% of race

Time at Slower Pace

1:50:03

33% of race

Average Pace: 12:38 /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 mi11:56:3632:5610:3632:56
10:36
#26959
10K
6.21 mi12:31:141:07:3410:5234:38
11:09
#27154
15K
9.32 mi13:04:531:41:1310:5233:39
10:50
#26885
20K
12.43 mi13:41:002:17:2011:0336:07
11:37
#26855
Half
13.11 mi13:48:192:24:3911:027:19
10:43
#26819
25K
15.53 mi14:21:102:57:3011:2632:51
13:33
#27042
30K
18.64 mi15:07:373:43:5712:0146:27
14:57
#27299
20M
20.00 mi15:27:054:03:2512:1019:28
14:19
#27345
21M
21.00 mi15:45:304:21:5012:2818:25
18:25
#27487
35K
21.75 mi15:56:084:32:2812:3210:38
14:13
#27506
23M
23.00 mi16:10:574:47:1712:2914:49
11:50
#27425
24M
24.00 mi16:23:575:00:1712:3113:00
13:00
#27419
40K
24.85 mi16:39:025:15:2212:4115:05
17:38
#27512
25.2M
25.20 mi16:43:475:20:0712:424:45
13:46
#27499
Finish
26.22 mi16:54:505:31:1012:3811:03
10:51
#27463
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26959113021130226454(Top 93%)11035(Top 90%)11035(Top 202%)
10K6.21 mi3.10 mi27154-19511449-14711449-14727231(Top 96%)11501(Top 94%)11501(Top 210%)
15K9.32 mi3.11 mi26885+26911287+16211287+16226454(Top 93%)11035(Top 90%)11035(Top 202%)
20K12.43 mi3.11 mi26855+3011274+1311274+1326766(Top 94%)11255(Top 92%)11255(Top 206%)
Half13.11 mi0.68 mi26819+3611256+1811256+1826120(Top 92%)10902(Top 89%)10902(Top 199%)
25K15.53 mi2.42 mi27042-22311406-15011406-15027641(Top 97%)11796(Top 96%)11796(Top 216%)
30K18.64 mi3.11 mi27299-25711586-18011586-18028015(Top 99%)12064(Top 99%)12064(Top 221%)
20M20.00 mi1.36 mi27345-4611612-2611612-2627519(Top 97%)11829(Top 97%)11829(Top 216%)
21M21.00 mi1.00 mi27487-14211706-9411706-9428313(Top 100%)12194(Top 100%)12194(Top 223%)
35K21.75 mi0.75 mi27506-1911720-1411720-1427790(Top 98%)12003(Top 98%)12003(Top 219%)
23M23.00 mi1.25 mi27425+8111676+4411676+4424822(Top 87%)10508(Top 86%)10508(Top 192%)
24M24.00 mi1.00 mi27419+611677-111677-126854(Top 95%)11562(Top 95%)11562(Top 211%)
40K24.85 mi0.85 mi27512-9311733-5611733-5628300(Top 100%)12194(Top 100%)12194(Top 223%)
25.2M25.20 mi0.35 mi27499+1311728+511728+526000(Top 92%)11188(Top 91%)11188(Top 205%)
Finish26.22 mi1.02 mi27463+3611711+1711711+1725033(Top 88%)10676(Top 87%)10676(Top 195%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

26454

Females

11035

F18-39

11035

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27231

Females

11501

F18-39

11501

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

26454

Females

11035

F18-39

11035

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

26766

Females

11255

F18-39

11255

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

26120

Females

10902

F18-39

10902

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

27641

Females

11796

F18-39

11796

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

28015

Females

12064

F18-39

12064

30K→20M

18.6 - 20.0 mi

Top 97%
×5stories
+64ft-50ft

Overall

27519

Females

11829

F18-39

11829

20M→21M

20.0 - 21.0 mi

Top 100%
×8stories
+106ft-24ft

Overall

28313

Females

12194

F18-39

12194

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27790

Females

12003

F18-39

12003

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

24822

Females

10508

F18-39

10508

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

26854

Females

11562

F18-39

11562

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

28300

Females

12194

F18-39

12194

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26000

Females

11188

F18-39

11188

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

25033

Females

10676

F18-39

10676

Passing Analysis

Category:
Athletes Passed
737
Passed By
1241
Net Change
-504
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26959
5K → 10K79274-195#26959#27154
10K → 15K28516+269#27154#26885
15K → 20K11888+30#26885#26855
20K → Half382+36#26855#26819
Half → 25K17240-223#26819#27042
25K → 30K25282-257#27042#27299
30K → 20M1157-46#27299#27345
20M → 21M1143-142#27345#27487
21M → 35K524-19#27487#27506
35K → 23M821+81#27506#27425
23M → 24M2317+6#27425#27419
24M → 40K194-93#27419#27512
40K → 25.2M152+13#27512#27499
25.2M → Finish371+36#27499#27463
TOTALS7371241-504
📊

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