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BOSTON MARATHON 2025

Tsuyoshi Yamaichi

Bib: 4372•M

TX

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 14%
Division (M18-39)
#0 / 5642
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:00
Rank: #3357
Start → 5K
20:00 | 6:26/mi
10K· 6.21 mi
39:54
Rank: #3204 (+153)
5K → 10K
19:54 | 6:24/mi
15K· 9.32 mi
59:46
Rank: #3088 (+116)
10K → 15K
19:52 | 6:24/mi
20K· 12.43 mi
1:19:48
Rank: #2988 (+100)
15K → 20K
20:02 | 6:27/mi
Half· 13.11 mi
1:24:05
Rank: #2951 (+37)
20K → Half
4:17 | 6:17/mi
25K· 15.53 mi
1:39:44
Rank: #2863 (+88)
Half → 25K
15:39 | 6:27/mi
30K· 18.64 mi
2:00:10
Rank: #2706 (+157)
25K → 30K
20:26 | 6:35/mi
20M
2:09:08
Rank: #2611 (+95)
30K → 20M
8:58 | 6:36/mi
21M
2:16:05
Rank: #2546 (+65)
20M → 21M
6:57 | 6:57/mi
35K· 21.75 mi
2:21:02
Rank: #2556 (-10)
21M → 35K
4:57 | 6:37/mi
23M
2:29:19
Rank: #2481 (+75)
35K → 23M
8:17 | 6:37/mi
24M
2:35:41
Rank: #2396 (+85)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:41:21
Rank: #2360 (+36)
24M → 40K
5:40 | 6:38/mi
25.2M
2:43:51
Rank: #2351 (+9)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:50:20
Rank: #2325 (+26)
25.2M → Finish
6:29 | 6:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:05
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:26:15
Pace6:35 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5120:006:2620:00
6:26
-
10K
6.21 mi10:42:4539:546:2519:54
6:24
-0:02
15K
9.32 mi11:02:3759:466:2519:52
6:24
0:00
20K
12.43 mi11:22:391:19:486:2520:02
6:27
+0:03
Half
13.11 mi11:26:561:24:056:254:17
6:17
-0:10
25K
15.53 mi11:42:351:39:446:2515:39
6:27
+0:10
30K
18.64 mi12:03:012:00:106:2720:26
6:35
+0:08
20M
20.00 mi12:11:592:09:086:278:58
6:36
+0:01
21M
21.00 mi12:18:562:16:056:296:57
6:57
+0:21
35K
21.75 mi12:23:532:21:026:294:57
6:37
-0:20
23M
23.00 mi12:32:102:29:196:308:17
6:37
0:00
24M
24.00 mi12:38:322:35:416:296:22
6:22
-0:15
40K
24.85 mi12:44:122:41:216:305:40
6:38
+0:16
25.2M
25.20 mi12:46:422:43:516:302:30
7:15
+0:37
Finish
26.22 mi12:53:112:50:206:306:29
6:22
-0:53

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

6:17 /mi

Average Pace

6:30 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:53

94% of race

Time at Steady Pace

9:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:30 /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 mi10:22:5120:006:2620:00
6:26
#3357
10K
6.21 mi10:42:4539:546:2519:54
6:24
#3204
15K
9.32 mi11:02:3759:466:2519:52
6:24
#3088
20K
12.43 mi11:22:391:19:486:2520:02
6:27
#2988
Half
13.11 mi11:26:561:24:056:254:17
6:17
#2951
25K
15.53 mi11:42:351:39:446:2515:39
6:27
#2863
30K
18.64 mi12:03:012:00:106:2720:26
6:35
#2706
20M
20.00 mi12:11:592:09:086:278:58
6:36
#2611
21M
21.00 mi12:18:562:16:056:296:57
6:57
#2546
35K
21.75 mi12:23:532:21:026:294:57
6:37
#2556
23M
23.00 mi12:32:102:29:196:308:17
6:37
#2481
24M
24.00 mi12:38:322:35:416:296:22
6:22
#2396
40K
24.85 mi12:44:122:41:216:305:40
6:38
#2360
25.2M
25.20 mi12:46:422:43:516:302:30
7:15
#2351
Finish
26.22 mi12:53:112:50:206:306:29
6:22
#2325
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3357318831882892(Top 10%)2756(Top 17%)2756(Top 49%)
10K6.21 mi3.10 mi3204+1533046+1423046+1423064(Top 11%)2917(Top 18%)2917(Top 52%)
15K9.32 mi3.11 mi3088+1162941+1052941+1052892(Top 10%)2756(Top 17%)2756(Top 49%)
20K12.43 mi3.11 mi2988+1002848+932848+932802(Top 10%)2667(Top 17%)2667(Top 47%)
Half13.11 mi0.68 mi2951+372812+362812+362377(Top 8%)2274(Top 14%)2274(Top 40%)
25K15.53 mi2.42 mi2863+882730+822730+822631(Top 9%)2504(Top 16%)2504(Top 44%)
30K18.64 mi3.11 mi2706+1572581+1492581+1492310(Top 8%)2188(Top 14%)2188(Top 39%)
20M20.00 mi1.36 mi2611+952493+882493+882013(Top 7%)1903(Top 12%)1903(Top 34%)
21M21.00 mi1.00 mi2546+652428+652428+652047(Top 7%)1922(Top 12%)1922(Top 34%)
35K21.75 mi0.75 mi2556-102434-62434-63010(Top 11%)2765(Top 17%)2765(Top 49%)
23M23.00 mi1.25 mi2481+752362+722362+721892(Top 7%)1769(Top 11%)1769(Top 31%)
24M24.00 mi1.00 mi2396+852279+832279+831534(Top 5%)1433(Top 9%)1433(Top 25%)
40K24.85 mi0.85 mi2360+362244+352244+352059(Top 7%)1897(Top 12%)1897(Top 34%)
25.2M25.20 mi0.35 mi2351+92232+122232+122307(Top 8%)2060(Top 13%)2060(Top 37%)
Finish26.22 mi1.02 mi2325+262205+272205+272133(Top 8%)1951(Top 12%)1951(Top 35%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2892

Males

2756

M18-39

2756

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3064

Males

2917

M18-39

2917

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2892

Males

2756

M18-39

2756

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2802

Males

2667

M18-39

2667

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2377

Males

2274

M18-39

2274

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2631

Males

2504

M18-39

2504

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2310

Males

2188

M18-39

2188

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

2013

Males

1903

M18-39

1903

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

2047

Males

1922

M18-39

1922

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3010

Males

2765

M18-39

2765

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1892

Males

1769

M18-39

1769

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1534

Males

1433

M18-39

1433

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

2059

Males

1897

M18-39

1897

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2307

Males

2060

M18-39

2060

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2133

Males

1951

M18-39

1951

Passing Analysis

Category:
Athletes Passed
1347
Passed By
315
Net Change
+1032
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3357
5K → 10K21966+153#3357#3204
10K → 15K14933+116#3204#3088
15K → 20K13737+100#3088#2988
20K → Half392+37#2988#2951
Half → 25K11224+88#2951#2863
25K → 30K18528+157#2863#2706
30K → 20M1049+95#2706#2611
20M → 21M7914+65#2611#2546
21M → 35K2838-10#2546#2556
35K → 23M9116+75#2556#2481
23M → 24M894+85#2481#2396
24M → 40K448+36#2396#2360
40K → 25.2M2718+9#2360#2351
25.2M → Finish4418+26#2351#2325
TOTALS1347315+1032
📊

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