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BOSTON MARATHON 2025

Lisa Kernan

Bib: 31084•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
39:05
Rank: #28347
Start → 5K
39:05 | 12:35/mi
10K· 6.21 mi
1:18:21
Rank: #28315 (+32)
5K → 10K
39:16 | 12:38/mi
15K· 9.32 mi
1:59:26
Rank: #28318 (-3)
10K → 15K
41:05 | 13:13/mi
20K· 12.43 mi
2:44:59
Rank: #28340 (-22)
15K → 20K
45:33 | 14:40/mi
Half· 13.11 mi
2:54:13
Rank: #28341 (-1)
20K → Half
9:14 | 13:32/mi
25K· 15.53 mi
3:31:03
Rank: #28352 (-11)
Half → 25K
36:50 | 15:11/mi
30K· 18.64 mi
4:18:53
Rank: #28343 (+9)
25K → 30K
47:50 | 15:24/mi
20M
4:39:37
Rank: #28341 (+2)
30K → 20M
20:44 | 15:15/mi
21M
4:55:56
Rank: #28344 (-3)
20M → 21M
16:19 | 16:19/mi
35K· 21.75 mi
5:06:11
Rank: #28340 (+4)
21M → 35K
10:15 | 13:42/mi
23M
5:23:17
Rank: #28328 (+12)
35K → 23M
17:06 | 13:39/mi
24M
5:36:33
Rank: #28316 (+12)
23M → 24M
13:16 | 13:16/mi
40K· 24.85 mi
5:49:13
Rank: #28320 (-4)
24M → 40K
12:40 | 14:49/mi
25.2M
5:54:16
Rank: #28316 (+4)
40K → 25.2M
5:03 | 14:39/mi
Finish· 26.22 mi
6:06:58
Rank: #28296 (+20)
25.2M → Finish
12:42 | 12:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:54:13
Pace13:17 /mi
2nd Half
Distance13.11 mi
Time3:12:45
Pace14:42 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:00:4339:0512:3539:05
12:35
-
10K
6.21 mi12:39:591:18:2112:3739:16
12:38
+0:03
15K
9.32 mi13:21:041:59:2612:4941:05
13:13
+0:35
20K
12.43 mi14:06:372:44:5913:1745:33
14:40
+1:27
Half
13.11 mi14:15:512:54:1313:179:14
13:32
-1:08
25K
15.53 mi14:52:413:31:0313:3536:50
15:11
+1:39
30K
18.64 mi15:40:314:18:5313:5347:50
15:24
+0:13
20M
20.00 mi16:01:154:39:3713:5920:44
15:15
-0:09
21M
21.00 mi16:17:344:55:5614:0616:19
16:19
+1:04
35K
21.75 mi16:27:495:06:1114:0510:15
13:42
-2:37
23M
23.00 mi16:44:555:23:1714:0317:06
13:39
-0:03
24M
24.00 mi16:58:115:36:3314:0113:16
13:16
-0:23
40K
24.85 mi17:10:515:49:1314:0312:40
14:49
+1:33
25.2M
25.20 mi17:15:545:54:1614:045:03
14:39
-0:10
Finish
26.22 mi17:28:366:06:5814:0012:42
12:28
-2:11

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

12:28 /mi

Average Pace

14:00 /mi

Slowest Pace

16:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:03

25% of race

Time at Steady Pace

1:30:56

25% of race

Time at Slower Pace

3:04:59

50% of race

Average Pace: 14:00 /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 mi12:00:4339:0512:3539:05
12:35
#28347
10K
6.21 mi12:39:591:18:2112:3739:16
12:38
#28315
15K
9.32 mi13:21:041:59:2612:4941:05
13:13
#28318
20K
12.43 mi14:06:372:44:5913:1745:33
14:40
#28340
Half
13.11 mi14:15:512:54:1313:179:14
13:32
#28341
25K
15.53 mi14:52:413:31:0313:3536:50
15:11
#28352
30K
18.64 mi15:40:314:18:5313:5347:50
15:24
#28343
20M
20.00 mi16:01:154:39:3713:5920:44
15:15
#28341
21M
21.00 mi16:17:344:55:5614:0616:19
16:19
#28344
35K
21.75 mi16:27:495:06:1114:0510:15
13:42
#28340
23M
23.00 mi16:44:555:23:1714:0317:06
13:39
#28328
24M
24.00 mi16:58:115:36:3314:0113:16
13:16
#28316
40K
24.85 mi17:10:515:49:1314:0312:40
14:49
#28320
25.2M
25.20 mi17:15:545:54:1614:045:03
14:39
#28316
Finish
26.22 mi17:28:366:06:5814:0012:42
12:28
#28296
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28347121901219028246(Top 99%)12138(Top 99%)12138(Top 222%)
10K6.21 mi3.10 mi28315+3212172+1812172+1828240(Top 99%)12128(Top 99%)12128(Top 222%)
15K9.32 mi3.11 mi28318-312178-612178-628246(Top 99%)12138(Top 99%)12138(Top 222%)
20K12.43 mi3.11 mi28340-2212194-1612194-1628342(Top 100%)12203(Top 100%)12203(Top 223%)
Half13.11 mi0.68 mi28341-1121941219428178(Top 99%)12116(Top 99%)12116(Top 222%)
25K15.53 mi2.42 mi28352-1112201-712201-728265(Top 100%)12163(Top 99%)12163(Top 222%)
30K18.64 mi3.11 mi28343+912199+212199+228160(Top 99%)12119(Top 99%)12119(Top 222%)
20M20.00 mi1.36 mi28341+2121991219927971(Top 98%)12039(Top 98%)12039(Top 220%)
21M21.00 mi1.00 mi28344-312203-412203-427948(Top 98%)12028(Top 98%)12028(Top 220%)
35K21.75 mi0.75 mi28340+412200+312200+327494(Top 97%)11855(Top 97%)11855(Top 217%)
23M23.00 mi1.25 mi28328+1212197+312197+327024(Top 95%)11624(Top 95%)11624(Top 213%)
24M24.00 mi1.00 mi28316+1212191+612191+627115(Top 95%)11706(Top 96%)11706(Top 214%)
40K24.85 mi0.85 mi28320-412194-312194-327685(Top 97%)11961(Top 98%)11961(Top 219%)
25.2M25.20 mi0.35 mi28316+412192+212192+226848(Top 95%)11594(Top 95%)11594(Top 212%)
Finish26.22 mi1.02 mi28296+2012182+1012182+1027259(Top 96%)11754(Top 96%)11754(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

28246

Females

12138

F18-39

12138

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

28240

Females

12128

F18-39

12128

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

28246

Females

12138

F18-39

12138

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

28342

Females

12203

F18-39

12203

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

28178

Females

12116

F18-39

12116

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

28265

Females

12163

F18-39

12163

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

28160

Females

12119

F18-39

12119

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

27971

Females

12039

F18-39

12039

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

27948

Females

12028

F18-39

12028

21M→35K

21.0 - 21.8 mi

Top 97%
×7stories
+17ft-86ft

Overall

27494

Females

11855

F18-39

11855

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

27024

Females

11624

F18-39

11624

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

27115

Females

11706

F18-39

11706

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27685

Females

11961

F18-39

11961

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

26848

Females

11594

F18-39

11594

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

27259

Females

11754

F18-39

11754

Passing Analysis

Category:
Athletes Passed
151
Passed By
100
Net Change
+51
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28347
5K → 10K386+32#28347#28315
10K → 15K1215-3#28315#28318
15K → 20K729-22#28318#28340
20K → Half34-1#28340#28341
Half → 25K516-11#28341#28352
25K → 30K189+9#28352#28343
30K → 20M64+2#28343#28341
20M → 21M47-3#28341#28344
21M → 35K51+4#28344#28340
35K → 23M131+12#28340#28328
23M → 24M142+12#28328#28316
24M → 40K04-4#28316#28320
40K → 25.2M62+4#28320#28316
25.2M → Finish200+20#28316#28296
TOTALS151100+51
📊

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