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BOSTON MARATHON 2025

Jennifer Kirkhart

Bib: 19080•F

KS

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
25:29
Rank: #18130
Start → 5K
8:12/mi
25:29 split
10K· 6.21 mi
51:33
Rank: #18589 (-459)
5K → 10K
8:23/mi
26:04 split
15K· 9.32 mi
1:17:50
Rank: #18731 (-142)
10K → 15K
8:28/mi
26:17 split
20K· 12.43 mi
1:45:00
Rank: #18952 (-221)
15K → 20K
8:45/mi
27:10 split
Half· 13.11 mi
1:50:43
Rank: #18932 (+20)
20K → Half
8:23/mi
5:43 split
25K· 15.53 mi
2:11:35
Rank: #18736 (+196)
Half → 25K
8:36/mi
20:52 split
30K· 18.64 mi
2:41:11
Rank: #19025 (-289)
25K → 30K
9:32/mi
29:36 split
20M
2:53:36
Rank: #18905 (+120)
30K → 20M
9:08/mi
12:25 split
21M
3:03:07
Rank: #18733 (+172)
20M → 21M
9:31/mi
9:31 split
35K· 21.75 mi
3:10:27
Rank: #18865 (-132)
21M → 35K
9:48/mi
7:20 split
23M
3:21:33
Rank: #18659 (+206)
35K → 23M
8:52/mi
11:06 split
24M
3:30:07
Rank: #18493 (+166)
23M → 24M
8:34/mi
8:34 split
40K· 24.85 mi
3:37:16
Rank: #18259 (+234)
24M → 40K
8:22/mi
7:09 split
25.2M
3:40:22
Rank: #18169 (+90)
40K → 25.2M
8:59/mi
3:06 split
Finish· 26.22 mi
3:48:02
Rank: #17848 (+321)
25.2M → Finish
7:31/mi
7:40 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:43
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:57:19
Pace8:57 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2825:298:1225:29
8:12
-
10K
6.21 mi11:42:3251:338:1826:04
8:23
+0:11
15K
9.32 mi12:08:491:17:508:2126:17
8:28
+0:05
20K
12.43 mi12:35:591:45:008:2727:10
8:45
+0:17
Half
13.11 mi12:41:421:50:438:275:43
8:23
-0:22
25K
15.53 mi13:02:342:11:358:2820:52
8:36
+0:13
30K
18.64 mi13:32:102:41:118:3929:36
9:32
+0:56
20M
20.00 mi13:44:352:53:368:4112:25
9:08
-0:24
21M
21.00 mi13:54:063:03:078:439:31
9:31
+0:23
35K
21.75 mi14:01:263:10:278:457:20
9:48
+0:17
23M
23.00 mi14:12:323:21:338:4611:06
8:52
-0:56
24M
24.00 mi14:21:063:30:078:458:34
8:34
-0:18
40K
24.85 mi14:28:153:37:168:447:09
8:22
-0:12
25.2M
25.20 mi14:31:213:40:228:453:06
8:59
+0:37
Finish
26.22 mi14:39:013:48:028:427:40
7:31
-1:28

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

7:31 /mi

Average Pace

8:42 /mi

Slowest Pace

9:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:09

15% of race

Time at Steady Pace

2:12:55

58% of race

Time at Slower Pace

1:01:58

27% of race

Average Pace: 8:42 /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 mi11:16:2825:298:1225:29
8:12
#18130
10K
6.21 mi11:42:3251:338:1826:04
8:23
#18589
15K
9.32 mi12:08:491:17:508:2126:17
8:28
#18731
20K
12.43 mi12:35:591:45:008:2727:10
8:45
#18952
Half
13.11 mi12:41:421:50:438:275:43
8:23
#18932
25K
15.53 mi13:02:342:11:358:2820:52
8:36
#18736
30K
18.64 mi13:32:102:41:118:3929:36
9:32
#19025
20M
20.00 mi13:44:352:53:368:4112:25
9:08
#18905
21M
21.00 mi13:54:063:03:078:439:31
9:31
#18733
35K
21.75 mi14:01:263:10:278:457:20
9:48
#18865
23M
23.00 mi14:12:323:21:338:4611:06
8:52
#18659
24M
24.00 mi14:21:063:30:078:458:34
8:34
#18493
40K
24.85 mi14:28:153:37:168:447:09
8:22
#18259
25.2M
25.20 mi14:31:213:40:228:453:06
8:59
#18169
Finish
26.22 mi14:39:013:48:028:427:40
7:31
#17848
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi181306425642519101(Top 67%)6957(Top 57%)6957(Top 127%)
10K6.21 mi3.10 mi18589-4596667-2426667-24219126(Top 67%)6957(Top 57%)6957(Top 127%)
15K9.32 mi3.11 mi18731-1426752-856752-8519101(Top 67%)6957(Top 57%)6957(Top 127%)
20K12.43 mi3.11 mi18952-2216874-1226874-12219656(Top 69%)7291(Top 60%)7291(Top 133%)
Half13.11 mi0.68 mi18932+206868+66868+618519(Top 65%)6633(Top 54%)6633(Top 121%)
25K15.53 mi2.42 mi18736+1966763+1056763+10517850(Top 63%)6344(Top 52%)6344(Top 116%)
30K18.64 mi3.11 mi19025-2896970-2076970-20720048(Top 71%)7682(Top 63%)7682(Top 140%)
20M20.00 mi1.36 mi18905+1206921+496921+4917493(Top 62%)6415(Top 52%)6415(Top 117%)
21M21.00 mi1.00 mi18733+1726853+686853+6816179(Top 57%)5806(Top 47%)5806(Top 106%)
35K21.75 mi0.75 mi18865-1326948-956948-9521340(Top 75%)8686(Top 71%)8686(Top 159%)
23M23.00 mi1.25 mi18659+2066858+906858+9015516(Top 55%)5618(Top 46%)5618(Top 103%)
24M24.00 mi1.00 mi18493+1666787+716787+7114980(Top 53%)5375(Top 44%)5375(Top 98%)
40K24.85 mi0.85 mi18259+2346688+996688+9912603(Top 44%)4256(Top 35%)4256(Top 78%)
25.2M25.20 mi0.35 mi18169+906653+356653+3511867(Top 42%)3943(Top 32%)3943(Top 72%)
Finish26.22 mi1.02 mi17848+3216489+1646489+1649416(Top 33%)2744(Top 22%)2744(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19101

Females

6957

F18-39

6957

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19126

Females

6957

F18-39

6957

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19101

Females

6957

F18-39

6957

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19656

Females

7291

F18-39

7291

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18519

Females

6633

F18-39

6633

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17850

Females

6344

F18-39

6344

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20048

Females

7682

F18-39

7682

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17493

Females

6415

F18-39

6415

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16179

Females

5806

F18-39

5806

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21340

Females

8686

F18-39

8686

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15516

Females

5618

F18-39

5618

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14980

Females

5375

F18-39

5375

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12603

Females

4256

F18-39

4256

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11867

Females

3943

F18-39

3943

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9416

Females

2744

F18-39

2744

Passing Analysis

Category:
Athletes Passed
2290
Passed By
2008
Net Change
+282
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18130
5K → 10K120579-459#18130#18589
10K → 15K136278-142#18589#18731
15K → 20K143364-221#18731#18952
20K → Half3919+20#18952#18932
Half → 25K25458+196#18932#18736
25K → 30K160449-289#18736#19025
30K → 20M16545+120#19025#18905
20M → 21M19826+172#18905#18733
21M → 35K28160-132#18733#18865
35K → 23M22216+206#18865#18659
23M → 24M1726+166#18659#18493
24M → 40K2373+234#18493#18259
40K → 25.2M944+90#18259#18169
25.2M → Finish3221+321#18169#17848
TOTALS22902008+282
📊

Passing Visuals

Category:
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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