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BOSTON MARATHON 2025

Yudai Yamakawa

Bib: 1623•M

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:45
Rank: #2814
Start → 5K
19:45 | 6:21/mi
10K· 6.21 mi
39:24
Rank: #2684 (+130)
5K → 10K
19:39 | 6:19/mi
15K· 9.32 mi
58:50
Rank: #2466 (+218)
10K → 15K
19:26 | 6:15/mi
20K· 12.43 mi
1:18:36
Rank: #2397 (+69)
15K → 20K
19:46 | 6:22/mi
Half· 13.11 mi
1:22:51
Rank: #2379 (+18)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:38:22
Rank: #2361 (+18)
Half → 25K
15:31 | 6:24/mi
30K· 18.64 mi
1:58:52
Rank: #2325 (+36)
25K → 30K
20:30 | 6:36/mi
20M
2:08:00
Rank: #2321 (+4)
30K → 20M
9:08 | 6:43/mi
21M
2:15:14
Rank: #2336 (-15)
20M → 21M
7:14 | 7:14/mi
35K· 21.75 mi
2:20:26
Rank: #2391 (-55)
21M → 35K
5:12 | 6:57/mi
23M
2:29:51
Rank: #2602 (-211)
35K → 23M
9:25 | 7:31/mi
24M
2:37:25
Rank: #2769 (-167)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
2:44:46
Rank: #3064 (-295)
24M → 40K
7:21 | 8:36/mi
25.2M
2:48:08
Rank: #3242 (-178)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
2:58:59
Rank: #4336 (-1094)
25.2M → Finish
10:51 | 10:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:51
Pace6:19 /mi
2nd Half
Distance13.11 mi
Time1:36:08
Pace7:20 /mi
📊Positive Split: 16.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3019:456:2119:45
6:21
-
10K
6.21 mi10:40:0939:246:2019:39
6:19
-0:02
15K
9.32 mi10:59:3558:506:1919:26
6:15
-0:04
20K
12.43 mi11:19:211:18:366:1919:46
6:22
+0:07
Half
13.11 mi11:23:361:22:516:194:15
6:14
-0:08
25K
15.53 mi11:39:071:38:226:2015:31
6:24
+0:10
30K
18.64 mi11:59:371:58:526:2320:30
6:36
+0:12
20M
20.00 mi12:08:452:08:006:249:08
6:43
+0:07
21M
21.00 mi12:15:592:15:146:267:14
7:14
+0:31
35K
21.75 mi12:21:112:20:266:275:12
6:57
-0:17
23M
23.00 mi12:30:362:29:516:319:25
7:31
+0:34
24M
24.00 mi12:38:102:37:256:347:34
7:34
+0:03
40K
24.85 mi12:45:312:44:466:387:21
8:36
+1:02
25.2M
25.20 mi12:48:532:48:086:403:22
9:46
+1:10
Finish
26.22 mi12:59:442:58:596:5010:51
10:39
+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

6:14 /mi

Average Pace

6:50 /mi

Slowest Pace

10:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:20:26

78% of race

Time at Slower Pace

38:33

22% of race

Average Pace: 6:50 /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 mi10:20:3019:456:2119:45
6:21
#2814
10K
6.21 mi10:40:0939:246:2019:39
6:19
#2684
15K
9.32 mi10:59:3558:506:1919:26
6:15
#2466
20K
12.43 mi11:19:211:18:366:1919:46
6:22
#2397
Half
13.11 mi11:23:361:22:516:194:15
6:14
#2379
25K
15.53 mi11:39:071:38:226:2015:31
6:24
#2361
30K
18.64 mi11:59:371:58:526:2320:30
6:36
#2325
20M
20.00 mi12:08:452:08:006:249:08
6:43
#2321
21M
21.00 mi12:15:592:15:146:267:14
7:14
#2336
35K
21.75 mi12:21:112:20:266:275:12
6:57
#2391
23M
23.00 mi12:30:362:29:516:319:25
7:31
#2602
24M
24.00 mi12:38:102:37:256:347:34
7:34
#2769
40K
24.85 mi12:45:312:44:466:387:21
8:36
#3064
25.2M
25.20 mi12:48:532:48:086:403:22
9:46
#3242
Finish
26.22 mi12:59:442:58:596:5010:51
10:39
#4336
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2814267926792138(Top 8%)2040(Top 13%)2040(Top 36%)
10K6.21 mi3.10 mi2684+1302555+1242555+1242581(Top 9%)2465(Top 15%)2465(Top 44%)
15K9.32 mi3.11 mi2466+2182354+2012354+2012138(Top 8%)2040(Top 13%)2040(Top 36%)
20K12.43 mi3.11 mi2397+692287+672287+672333(Top 8%)2226(Top 14%)2226(Top 39%)
Half13.11 mi0.68 mi2379+182269+182269+182186(Top 8%)2090(Top 13%)2090(Top 37%)
25K15.53 mi2.42 mi2361+182252+172252+172382(Top 8%)2267(Top 14%)2267(Top 40%)
30K18.64 mi3.11 mi2325+362220+322220+322412(Top 8%)2284(Top 14%)2284(Top 40%)
20M20.00 mi1.36 mi2321+42213+72213+72575(Top 9%)2423(Top 15%)2423(Top 43%)
21M21.00 mi1.00 mi2336-152227-142227-143304(Top 12%)3042(Top 19%)3042(Top 54%)
35K21.75 mi0.75 mi2391-552280-532280-535059(Top 18%)4426(Top 27%)4426(Top 78%)
23M23.00 mi1.25 mi2602-2112476-1962476-1966730(Top 24%)5432(Top 34%)5432(Top 96%)
24M24.00 mi1.00 mi2769-1672626-1502626-1508126(Top 29%)6184(Top 38%)6184(Top 110%)
40K24.85 mi0.85 mi3064-2952891-2652891-26513990(Top 49%)8982(Top 56%)8982(Top 159%)
25.2M25.20 mi0.35 mi3242-1783052-1613052-16115820(Top 56%)9757(Top 61%)9757(Top 173%)
Finish26.22 mi1.02 mi4336-10943990-9383990-93824599(Top 87%)14076(Top 87%)14076(Top 249%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2138

Males

2040

M18-39

2040

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2581

Males

2465

M18-39

2465

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2138

Males

2040

M18-39

2040

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2333

Males

2226

M18-39

2226

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2186

Males

2090

M18-39

2090

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2382

Males

2267

M18-39

2267

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2412

Males

2284

M18-39

2284

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2575

Males

2423

M18-39

2423

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3304

Males

3042

M18-39

3042

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5059

Males

4426

M18-39

4426

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6730

Males

5432

M18-39

5432

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8126

Males

6184

M18-39

6184

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13990

Males

8982

M18-39

8982

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15820

Males

9757

M18-39

9757

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

24599

Males

14076

M18-39

14076

Passing Analysis

Category:
Athletes Passed
843
Passed By
2365
Net Change
-1522
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2814
5K → 10K19363+130#2814#2684
10K → 15K23113+218#2684#2466
15K → 20K10738+69#2466#2397
20K → Half257+18#2397#2379
Half → 25K5840+18#2379#2361
25K → 30K10367+36#2361#2325
30K → 20M4642+4#2325#2321
20M → 21M3348-15#2321#2336
21M → 35K1469-55#2336#2391
35K → 23M13224-211#2391#2602
23M → 24M15182-167#2602#2769
24M → 40K3298-295#2769#3064
40K → 25.2M2180-178#3064#3242
25.2M → Finish01094-1094#3242#4336
TOTALS8432365-1522
📊

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