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BOSTON MARATHON 2025

Kerry Johnson

Bib: 21122•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
Masters (Masters Women)
#0 / 6759
Top 25%
Division (F45-49)
#0 / 1813
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:43/mi
24:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:45/mi
48:04
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:12:05
↑ 67↓ 78
20K· 12.43 mi
7:48/mi
1:36:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:41:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:01:54
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:28:35
↑ 181↓ 1480.2%
20M
8:50/mi
2:40:35
↑ 64↓ 500.2%
21M
9:29/mi
2:50:04
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
2:56:24
↑ 17↓ 861.7%
23M
8:45/mi
3:07:21
↑ 23↓ 630.6%
24M
8:47/mi
3:16:08
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:23:56
↓ 200.3%
25.2M
10:12/mi
3:27:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:36:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:35
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:54:35
Pace8:44 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4024:007:4324:00
7:43
-
10K
6.21 mi11:42:4448:047:4424:04
7:45
+0:02
15K
9.32 mi12:06:451:12:057:4424:01
7:44
-0:01
20K
12.43 mi12:30:591:36:197:4524:14
7:48
+0:04
Half
13.11 mi12:36:151:41:357:455:16
7:43
-0:05
25K
15.53 mi12:56:342:01:547:5120:19
8:23
+0:40
30K
18.64 mi13:23:152:28:357:5826:41
8:35
+0:12
20M
20.00 mi13:35:152:40:358:0212:00
8:50
+0:15
21M
21.00 mi13:44:442:50:048:069:29
9:29
+0:39
35K
21.75 mi13:51:042:56:248:076:20
8:28
-1:01
23M
23.00 mi14:02:013:07:218:0910:57
8:45
+0:17
24M
24.00 mi14:10:483:16:088:108:47
8:47
+0:02
40K
24.85 mi14:18:363:23:568:127:48
9:07
+0:20
25.2M
25.20 mi14:22:073:27:278:143:31
10:12
+1:05
Finish
26.22 mi14:30:503:36:108:158:43
8:33
-1:39

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

7:43 /mi

Average Pace

8:15 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:35

47% of race

Time at Steady Pace

1:33:47

43% of race

Time at Slower Pace

20:48

10% of race

Average Pace: 8:15 /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 mi11:18:4024:007:4324:00
7:43
#14191
10K
6.21 mi11:42:4448:047:4424:04
7:45
#14210
15K
9.32 mi12:06:451:12:057:4424:01
7:44
#14061
20K
12.43 mi12:30:591:36:197:4524:14
7:48
#13808
Half
13.11 mi12:36:151:41:357:455:16
7:43
#13784
25K
15.53 mi12:56:342:01:547:5120:19
8:23
#14291
30K
18.64 mi13:23:152:28:357:5826:41
8:35
#14450
20M
20.00 mi13:35:152:40:358:0212:00
8:50
#14577
21M
21.00 mi13:44:442:50:048:069:29
9:29
#14664
35K
21.75 mi13:51:042:56:248:076:20
8:28
#14657
23M
23.00 mi14:02:013:07:218:0910:57
8:45
#14644
24M
24.00 mi14:10:483:16:088:108:47
8:47
#14698
40K
24.85 mi14:18:363:23:568:127:48
9:07
#14782
25.2M
25.20 mi14:22:073:27:278:143:31
10:12
#14828
Finish
26.22 mi14:30:503:36:108:158:43
8:33
#14881
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi141914027402713800(Top 49%)3900(Top 32%)3900(Top 215%)
10K6.21 mi3.10 mi14210-194063-364063-3614313(Top 50%)4144(Top 34%)4144(Top 229%)
15K9.32 mi3.11 mi14061+1494012+514012+5113800(Top 49%)3900(Top 32%)3900(Top 215%)
20K12.43 mi3.11 mi13808+2533904+1083904+10813296(Top 47%)3708(Top 30%)3708(Top 205%)
Half13.11 mi0.68 mi13784+243898+63898+613662(Top 48%)3884(Top 32%)3884(Top 214%)
25K15.53 mi2.42 mi14291-5074213-3154213-31516436(Top 58%)5547(Top 45%)5547(Top 306%)
30K18.64 mi3.11 mi14450-1594364-1514364-15115319(Top 54%)5083(Top 42%)5083(Top 280%)
20M20.00 mi1.36 mi14577-1274458-944458-9415851(Top 56%)5498(Top 45%)5498(Top 303%)
21M21.00 mi1.00 mi14664-874536-784536-7816011(Top 56%)5707(Top 47%)5707(Top 315%)
35K21.75 mi0.75 mi14657+74541-54541-515268(Top 54%)5379(Top 44%)5379(Top 297%)
23M23.00 mi1.25 mi14644+134573-324573-3214811(Top 52%)5226(Top 43%)5226(Top 288%)
24M24.00 mi1.00 mi14698-544629-564629-5616234(Top 57%)6060(Top 50%)6060(Top 334%)
40K24.85 mi0.85 mi14782-844710-814710-8116979(Top 60%)6562(Top 54%)6562(Top 362%)
25.2M25.20 mi0.35 mi14828-464739-294739-2917882(Top 63%)7060(Top 58%)7060(Top 389%)
Finish26.22 mi1.02 mi14881-534807-684807-6816586(Top 58%)6344(Top 52%)6344(Top 350%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13800

Females

3900

F45-49

3900

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14313

Females

4144

F45-49

4144

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13800

Females

3900

F45-49

3900

15K→20K

9.3 - 12.4 mi

Top 47%
×5story building
+106ft-86ft

Overall

13296

Females

3708

F45-49

3708

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13662

Females

3884

F45-49

3884

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16436

Females

5547

F45-49

5547

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15319

Females

5083

F45-49

5083

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15851

Females

5498

F45-49

5498

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

16011

Females

5707

F45-49

5707

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15268

Females

5379

F45-49

5379

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

14811

Females

5226

F45-49

5226

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16234

Females

6060

F45-49

6060

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16979

Females

6562

F45-49

6562

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17882

Females

7060

F45-49

7060

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16586

Females

6344

F45-49

6344

Passing Analysis

Category:
Athletes Passed
1716
Passed By
2406
Net Change
-690
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14191
5K → 10K264283-19#14191#14210
10K → 15K276127+149#14210#14061
15K → 20K33380+253#14061#13808
20K → Half4824+24#13808#13784
Half → 25K75582-507#13784#14291
25K → 30K189348-159#14291#14450
30K → 20M98225-127#14450#14577
20M → 21M75162-87#14577#14664
21M → 35K7871+7#14664#14657
35K → 23M10087+13#14657#14644
23M → 24M56110-54#14644#14698
24M → 40K44128-84#14698#14782
40K → 25.2M2369-46#14782#14828
25.2M → Finish57110-53#14828#14881
TOTALS17162406-690
📊

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