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BOSTON MARATHON 2025

Harry Komuro

Bib: 18424•M

HI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Top 43%
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
7:48/mi
24:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:27
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:13:04
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:37:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:42:41
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
2:01:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:19/mi
2:27:35
↑ 181↓ 1480.2%
20M
8:29/mi
2:39:07
↑ 64↓ 500.2%
21M
9:05/mi
2:48:12
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
2:54:36
↑ 17↓ 861.7%
23M
8:40/mi
3:05:27
↑ 23↓ 630.6%
24M
8:42/mi
3:14:09
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:21:43
↓ 200.3%
25.2M
9:52/mi
3:25:07
↑ 13↓ 160.2%
Finish· 26.22 mi
8:50/mi
3:34:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:41
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:51:26
Pace8:30 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2624:157:4824:15
7:48
-
10K
6.21 mi11:40:3848:277:4824:12
7:47
-0:01
15K
9.32 mi12:05:151:13:047:5024:37
7:55
+0:08
20K
12.43 mi12:29:361:37:257:5024:21
7:50
-0:05
Half
13.11 mi12:34:521:42:417:505:16
7:43
-0:07
25K
15.53 mi12:53:562:01:457:5019:04
7:52
+0:09
30K
18.64 mi13:19:462:27:357:5525:50
8:19
+0:27
20M
20.00 mi13:31:182:39:077:5711:32
8:29
+0:10
21M
21.00 mi13:40:232:48:128:019:05
9:05
+0:36
35K
21.75 mi13:46:472:54:368:026:24
8:33
-0:32
23M
23.00 mi13:57:383:05:278:0410:51
8:40
+0:07
24M
24.00 mi14:06:203:14:098:058:42
8:42
+0:02
40K
24.85 mi14:13:543:21:438:077:34
8:51
+0:09
25.2M
25.20 mi14:17:183:25:078:083:24
9:52
+1:01
Finish
26.22 mi14:26:183:34:078:109:00
8:50
-1:02

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

8:10 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:45

57% of race

Time at Steady Pace

1:03:19

30% of race

Time at Slower Pace

29:03

14% of race

Average Pace: 8:10 /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 mi11:16:2624:157:4824:15
7:48
#14847
10K
6.21 mi11:40:3848:277:4824:12
7:47
#14764
15K
9.32 mi12:05:151:13:047:5024:37
7:55
#14982
20K
12.43 mi12:29:361:37:257:5024:21
7:50
#14574
Half
13.11 mi12:34:521:42:417:505:16
7:43
#14501
25K
15.53 mi12:53:562:01:457:5019:04
7:52
#14197
30K
18.64 mi13:19:462:27:357:5525:50
8:19
#14016
20M
20.00 mi13:31:182:39:077:5711:32
8:29
#13962
21M
21.00 mi13:40:232:48:128:019:05
9:05
#13926
35K
21.75 mi13:46:472:54:368:026:24
8:33
#13998
23M
23.00 mi13:57:383:05:278:0410:51
8:40
#14038
24M
24.00 mi14:06:203:14:098:058:42
8:42
#14129
40K
24.85 mi14:13:543:21:438:077:34
8:51
#14160
25.2M
25.20 mi14:17:183:25:078:083:24
9:52
#14189
Finish
26.22 mi14:26:183:34:078:109:00
8:50
#14322
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi14847103681036815404(Top 54%)10546(Top 65%)10546(Top 640%)
10K6.21 mi3.10 mi14764+8310309+5910309+5914694(Top 52%)10295(Top 64%)10295(Top 625%)
15K9.32 mi3.11 mi14982-21810393-8410393-8415404(Top 54%)10546(Top 65%)10546(Top 640%)
20K12.43 mi3.11 mi14574+40810202+19110202+19113561(Top 48%)9675(Top 60%)9675(Top 587%)
Half13.11 mi0.68 mi14501+7310162+4010162+4013521(Top 48%)9709(Top 60%)9709(Top 589%)
25K15.53 mi2.42 mi14197+30410000+16210000+16212858(Top 45%)9231(Top 57%)9231(Top 560%)
30K18.64 mi3.11 mi14016+1819862+1389862+13813590(Top 48%)9412(Top 58%)9412(Top 571%)
20M20.00 mi1.36 mi13962+549801+619801+6113685(Top 48%)9300(Top 58%)9300(Top 564%)
21M21.00 mi1.00 mi13926+369759+429759+4213977(Top 49%)9318(Top 58%)9318(Top 565%)
35K21.75 mi0.75 mi13998-729771-129771-1215771(Top 56%)10073(Top 63%)10073(Top 611%)
23M23.00 mi1.25 mi14038-409755+169755+1614326(Top 50%)9313(Top 58%)9313(Top 565%)
24M24.00 mi1.00 mi14129-919763-89763-815723(Top 55%)9919(Top 62%)9919(Top 602%)
40K24.85 mi0.85 mi14160-319751+129751+1215440(Top 54%)9627(Top 60%)9627(Top 584%)
25.2M25.20 mi0.35 mi14189-299760-99760-916318(Top 57%)10028(Top 62%)10028(Top 608%)
Finish26.22 mi1.02 mi14322-1339789-299789-2918183(Top 64%)10956(Top 68%)10956(Top 665%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15404

Males

10546

M55-59

10546

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14694

Males

10295

M55-59

10295

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15404

Males

10546

M55-59

10546

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13561

Males

9675

M55-59

9675

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13521

Males

9709

M55-59

9709

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12858

Males

9231

M55-59

9231

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13590

Males

9412

M55-59

9412

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13685

Males

9300

M55-59

9300

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13977

Males

9318

M55-59

9318

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15771

Males

10073

M55-59

10073

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14326

Males

9313

M55-59

9313

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15723

Males

9919

M55-59

9919

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15440

Males

9627

M55-59

9627

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16318

Males

10028

M55-59

10028

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18183

Males

10956

M55-59

10956

Passing Analysis

Category:
Athletes Passed
2264
Passed By
1739
Net Change
+525
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14847
5K → 10K332249+83#14847#14764
10K → 15K130348-218#14764#14982
15K → 20K43830+408#14982#14574
20K → Half8613+73#14574#14501
Half → 25K33632+304#14501#14197
25K → 30K340159+181#14197#14016
30K → 20M14389+54#14016#13962
20M → 21M12185+36#13962#13926
21M → 35K46118-72#13926#13998
35K → 23M102142-40#13998#14038
23M → 24M60151-91#14038#14129
24M → 40K6192-31#14129#14160
40K → 25.2M2857-29#14160#14189
25.2M → Finish41174-133#14189#14322
TOTALS22641739+525
📊

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