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BOSTON MARATHON 2025

Kailey Skarinka

Bib: 28253•F

MI

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
30:48
Rank: #25386
Start → 5K
30:48 | 9:55/mi
10K· 6.21 mi
1:00:19
Rank: #24747 (+639)
5K → 10K
29:31 | 9:30/mi
15K· 9.32 mi
1:29:40
Rank: #24364 (+383)
10K → 15K
29:21 | 9:27/mi
20K· 12.43 mi
1:59:21
Rank: #24027 (+337)
15K → 20K
29:41 | 9:33/mi
Half· 13.11 mi
2:05:54
Rank: #24017 (+10)
20K → Half
6:33 | 9:36/mi
25K· 15.53 mi
2:29:38
Rank: #23780 (+237)
Half → 25K
23:44 | 9:47/mi
30K· 18.64 mi
3:00:17
Rank: #23308 (+472)
25K → 30K
30:39 | 9:52/mi
20M
3:13:49
Rank: #23128 (+180)
30K → 20M
13:32 | 9:58/mi
21M
3:24:06
Rank: #22922 (+206)
20M → 21M
10:17 | 10:17/mi
35K· 21.75 mi
3:31:27
Rank: #22861 (+61)
21M → 35K
7:21 | 9:49/mi
23M
3:44:05
Rank: #22737 (+124)
35K → 23M
12:38 | 10:05/mi
24M
3:53:54
Rank: #22628 (+109)
23M → 24M
9:49 | 9:49/mi
40K· 24.85 mi
4:02:10
Rank: #22511 (+117)
24M → 40K
8:16 | 9:40/mi
25.2M
4:05:52
Rank: #22469 (+42)
40K → 25.2M
3:42 | 10:44/mi
Finish· 26.22 mi
4:15:13
Rank: #22377 (+92)
25.2M → Finish
9:21 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:54
Pace9:36 /mi
2nd Half
Distance13.11 mi
Time2:09:19
Pace9:52 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:2630:489:5530:48
9:55
-
10K
6.21 mi12:17:571:00:199:4229:31
9:30
-0:25
15K
9.32 mi12:47:181:29:409:3729:21
9:27
-0:03
20K
12.43 mi13:16:591:59:219:3629:41
9:33
+0:06
Half
13.11 mi13:23:322:05:549:366:33
9:36
+0:03
25K
15.53 mi13:47:162:29:389:3823:44
9:47
+0:11
30K
18.64 mi14:17:553:00:179:4030:39
9:52
+0:05
20M
20.00 mi14:31:273:13:499:4113:32
9:58
+0:06
21M
21.00 mi14:41:443:24:069:4310:17
10:17
+0:19
35K
21.75 mi14:49:053:31:279:437:21
9:49
-0:28
23M
23.00 mi15:01:433:44:059:4512:38
10:05
+0:16
24M
24.00 mi15:11:323:53:549:459:49
9:49
-0:16
40K
24.85 mi15:19:484:02:109:458:16
9:40
-0:09
25.2M
25.20 mi15:23:304:05:529:453:42
10:44
+1:04
Finish
26.22 mi15:32:514:15:139:449:21
9:11
-1:33

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

9:11 /mi

Average Pace

9:44 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:01:14

95% of race

Time at Steady Pace

13:59

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:44 /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 mi11:48:2630:489:5530:48
9:55
#25386
10K
6.21 mi12:17:571:00:199:4229:31
9:30
#24747
15K
9.32 mi12:47:181:29:409:3729:21
9:27
#24364
20K
12.43 mi13:16:591:59:219:3629:41
9:33
#24027
Half
13.11 mi13:23:322:05:549:366:33
9:36
#24017
25K
15.53 mi13:47:162:29:389:3823:44
9:47
#23780
30K
18.64 mi14:17:553:00:179:4030:39
9:52
#23308
20M
20.00 mi14:31:273:13:499:4113:32
9:58
#23128
21M
21.00 mi14:41:443:24:069:4310:17
10:17
#22922
35K
21.75 mi14:49:053:31:279:437:21
9:49
#22861
23M
23.00 mi15:01:433:44:059:4512:38
10:05
#22737
24M
24.00 mi15:11:323:53:549:459:49
9:49
#22628
40K
24.85 mi15:19:484:02:109:458:16
9:40
#22511
25.2M
25.20 mi15:23:304:05:529:453:42
10:44
#22469
Finish
26.22 mi15:32:514:15:139:449:21
9:11
#22377
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25386104201042023597(Top 83%)9434(Top 77%)9434(Top 172%)
10K6.21 mi3.10 mi24747+63910088+33210088+33224106(Top 85%)9744(Top 80%)9744(Top 178%)
15K9.32 mi3.11 mi24364+3839881+2079881+20723597(Top 83%)9434(Top 77%)9434(Top 172%)
20K12.43 mi3.11 mi24027+3379708+1739708+17323076(Top 81%)9191(Top 75%)9191(Top 168%)
Half13.11 mi0.68 mi24017+109701+79701+723851(Top 84%)9612(Top 79%)9612(Top 176%)
25K15.53 mi2.42 mi23780+2379573+1289573+12822739(Top 80%)9054(Top 74%)9054(Top 166%)
30K18.64 mi3.11 mi23308+4729354+2199354+21921211(Top 75%)8349(Top 68%)8349(Top 153%)
20M20.00 mi1.36 mi23128+1809277+779277+7720812(Top 73%)8258(Top 68%)8258(Top 151%)
21M21.00 mi1.00 mi22922+2069187+909187+9019343(Top 68%)7530(Top 62%)7530(Top 138%)
35K21.75 mi0.75 mi22861+619164+239164+2321419(Top 75%)8734(Top 71%)8734(Top 160%)
23M23.00 mi1.25 mi22737+1249117+479117+4720795(Top 73%)8452(Top 69%)8452(Top 155%)
24M24.00 mi1.00 mi22628+1099088+299088+2920796(Top 73%)8504(Top 70%)8504(Top 155%)
40K24.85 mi0.85 mi22511+1179037+519037+5119386(Top 68%)7838(Top 64%)7838(Top 143%)
25.2M25.20 mi0.35 mi22469+429021+169021+1619880(Top 70%)8108(Top 66%)8108(Top 148%)
Finish26.22 mi1.02 mi22377+928986+358986+3519878(Top 70%)8088(Top 66%)8088(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23597

Females

9434

F18-39

9434

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24106

Females

9744

F18-39

9744

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23597

Females

9434

F18-39

9434

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

23076

Females

9191

F18-39

9191

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23851

Females

9612

F18-39

9612

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22739

Females

9054

F18-39

9054

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

21211

Females

8349

F18-39

8349

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20812

Females

8258

F18-39

8258

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

19343

Females

7530

F18-39

7530

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

21419

Females

8734

F18-39

8734

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20795

Females

8452

F18-39

8452

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

20796

Females

8504

F18-39

8504

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19386

Females

7838

F18-39

7838

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19880

Females

8108

F18-39

8108

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19878

Females

8088

F18-39

8088

Passing Analysis

Category:
Athletes Passed
3174
Passed By
165
Net Change
+3009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25386
5K → 10K66122+639#25386#24747
10K → 15K39714+383#24747#24364
15K → 20K35013+337#24364#24027
20K → Half3121+10#24027#24017
Half → 25K26225+237#24017#23780
25K → 30K48412+472#23780#23308
30K → 20M19010+180#23308#23128
20M → 21M2093+206#23128#22922
21M → 35K7211+61#22922#22861
35K → 23M13612+124#22861#22737
23M → 24M11910+109#22737#22628
24M → 40K1192+117#22628#22511
40K → 25.2M453+42#22511#22469
25.2M → Finish997+92#22469#22377
TOTALS3174165+3009
📊

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