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BOSTON MARATHON 2025

Koichi Imamura

Bib: 11840•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Top 50%
Masters (Masters Men)
#0 / 10463
Top 39%
Division (M60-64)
#0 / 1259
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:46
Rank: #10633
Start → 5K
22:46 | 7:20/mi
10K· 6.21 mi
45:50
Rank: #11007 (-374)
5K → 10K
23:04 | 7:25/mi
15K· 9.32 mi
1:09:40
Rank: #11747 (-740)
10K → 15K
23:50 | 7:40/mi
20K· 12.43 mi
1:32:56
Rank: #11439 (+308)
15K → 20K
23:16 | 7:29/mi
Half· 13.11 mi
1:37:58
Rank: #11412 (+27)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:56:15
Rank: #11194 (+218)
Half → 25K
18:17 | 7:32/mi
30K· 18.64 mi
2:20:26
Rank: #10894 (+300)
25K → 30K
24:11 | 7:47/mi
20M
2:31:07
Rank: #10746 (+148)
30K → 20M
10:41 | 7:52/mi
21M
2:39:46
Rank: #10739 (+7)
20M → 21M
8:39 | 8:39/mi
35K· 21.75 mi
2:45:40
Rank: #10748 (-9)
21M → 35K
5:54 | 7:53/mi
23M
2:55:35
Rank: #10619 (+129)
35K → 23M
9:55 | 7:55/mi
24M
3:03:29
Rank: #10583 (+36)
23M → 24M
7:54 | 7:54/mi
40K· 24.85 mi
3:10:28
Rank: #10580 (+3)
24M → 40K
6:59 | 8:10/mi
25.2M
3:13:35
Rank: #10584 (-4)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:21:28
Rank: #10582 (+2)
25.2M → Finish
7:53 | 7:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:58
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:43:30
Pace7:54 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3922:467:2022:46
7:20
-
10K
6.21 mi11:13:4345:507:2323:04
7:25
+0:05
15K
9.32 mi11:37:331:09:407:2823:50
7:40
+0:15
20K
12.43 mi12:00:491:32:567:2923:16
7:29
-0:11
Half
13.11 mi12:05:511:37:587:285:02
7:23
-0:06
25K
15.53 mi12:24:081:56:157:2918:17
7:32
+0:09
30K
18.64 mi12:48:192:20:267:3224:11
7:47
+0:15
20M
20.00 mi12:59:002:31:077:3310:41
7:52
+0:05
21M
21.00 mi13:07:392:39:467:368:39
8:39
+0:47
35K
21.75 mi13:13:332:45:407:375:54
7:53
-0:46
23M
23.00 mi13:23:282:55:357:389:55
7:55
+0:02
24M
24.00 mi13:31:223:03:297:397:54
7:54
-0:01
40K
24.85 mi13:38:213:10:287:406:59
8:10
+0:16
25.2M
25.20 mi13:41:283:13:357:413:07
9:02
+0:52
Finish
26.22 mi13:49:213:21:287:417:53
7:44
-1:18

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

7:20 /mi

Average Pace

7:41 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:25

46% of race

Time at Steady Pace

1:30:18

45% of race

Time at Slower Pace

18:45

9% of race

Average Pace: 7:41 /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 mi10:50:3922:467:2022:46
7:20
#10633
10K
6.21 mi11:13:4345:507:2323:04
7:25
#11007
15K
9.32 mi11:37:331:09:407:2823:50
7:40
#11747
20K
12.43 mi12:00:491:32:567:2923:16
7:29
#11439
Half
13.11 mi12:05:511:37:587:285:02
7:23
#11412
25K
15.53 mi12:24:081:56:157:2918:17
7:32
#11194
30K
18.64 mi12:48:192:20:267:3224:11
7:47
#10894
20M
20.00 mi12:59:002:31:077:3310:41
7:52
#10746
21M
21.00 mi13:07:392:39:467:368:39
8:39
#10739
35K
21.75 mi13:13:332:45:407:375:54
7:53
#10748
23M
23.00 mi13:23:282:55:357:389:55
7:55
#10619
24M
24.00 mi13:31:223:03:297:397:54
7:54
#10583
40K
24.85 mi13:38:213:10:287:406:59
8:10
#10580
25.2M
25.20 mi13:41:283:13:357:413:07
9:02
#10584
Finish
26.22 mi13:49:213:21:287:417:53
7:44
#10582
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi106338505850513202(Top 46%)9603(Top 60%)9603(Top 763%)
10K6.21 mi3.10 mi11007-3748672-1678672-16711391(Top 40%)8848(Top 55%)8848(Top 703%)
15K9.32 mi3.11 mi11747-7409021-3499021-34913202(Top 46%)9603(Top 60%)9603(Top 763%)
20K12.43 mi3.11 mi11439+3088834+1878834+18710657(Top 38%)8338(Top 52%)8338(Top 662%)
Half13.11 mi0.68 mi11412+278817+178817+1710651(Top 37%)8373(Top 52%)8373(Top 665%)
25K15.53 mi2.42 mi11194+2188676+1418676+14110294(Top 36%)8036(Top 50%)8036(Top 638%)
30K18.64 mi3.11 mi10894+3008459+2178459+2179805(Top 35%)7585(Top 47%)7585(Top 602%)
20M20.00 mi1.36 mi10746+1488334+1258334+1259446(Top 33%)7237(Top 45%)7237(Top 575%)
21M21.00 mi1.00 mi10739+78299+358299+3511346(Top 40%)8044(Top 50%)8044(Top 639%)
35K21.75 mi0.75 mi10748-98284+158284+1511425(Top 40%)8059(Top 50%)8059(Top 640%)
23M23.00 mi1.25 mi10619+1298181+1038181+1039433(Top 33%)6943(Top 43%)6943(Top 551%)
24M24.00 mi1.00 mi10583+368124+578124+5710525(Top 37%)7438(Top 46%)7438(Top 591%)
40K24.85 mi0.85 mi10580+38095+298095+2911341(Top 40%)7732(Top 48%)7732(Top 614%)
25.2M25.20 mi0.35 mi10584-48078+178078+1711945(Top 42%)7956(Top 49%)7956(Top 632%)
Finish26.22 mi1.02 mi10582+28044+348044+3410942(Top 39%)7481(Top 46%)7481(Top 594%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

13202

Males

9603

M60-64

9603

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

11391

Males

8848

M60-64

8848

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

13202

Males

9603

M60-64

9603

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10657

Males

8338

M60-64

8338

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10651

Males

8373

M60-64

8373

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

10294

Males

8036

M60-64

8036

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9805

Males

7585

M60-64

7585

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

9446

Males

7237

M60-64

7237

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

11346

Males

8044

M60-64

8044

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11425

Males

8059

M60-64

8059

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9433

Males

6943

M60-64

6943

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10525

Males

7438

M60-64

7438

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11341

Males

7732

M60-64

7732

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11945

Males

7956

M60-64

7956

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10942

Males

7481

M60-64

7481

Passing Analysis

Category:
Athletes Passed
2026
Passed By
1975
Net Change
+51
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10633
5K → 10K120494-374#10633#11007
10K → 15K52792-740#11007#11747
15K → 20K36254+308#11747#11439
20K → Half4518+27#11439#11412
Half → 25K26749+218#11412#11194
25K → 30K39292+300#11194#10894
30K → 20M18840+148#10894#10746
20M → 21M10194+7#10746#10739
21M → 35K5463-9#10739#10748
35K → 23M16738+129#10748#10619
23M → 24M9458+36#10619#10583
24M → 40K6663+3#10583#10580
40K → 25.2M4549-4#10580#10584
25.2M → Finish7371+2#10584#10582
TOTALS20261975+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