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BOSTON MARATHON 2025

Kazuyuki Igarashi

Bib: 9194•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 21%
Gender (Male)
#0 / 16105
Top 33%
Masters (Masters Men)
#0 / 10463
Top 19%
Division (M60-64)
#0 / 1259
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #4364
Start → 5K
6:34/mi
20:25 split
10K· 6.21 mi
41:13
Rank: #4756 (-392)
5K → 10K
6:42/mi
20:48 split
15K· 9.32 mi
1:02:20
Rank: #5134 (-378)
10K → 15K
6:48/mi
21:07 split
20K· 12.43 mi
1:23:33
Rank: #5194 (-60)
15K → 20K
6:50/mi
21:13 split
Half· 13.11 mi
1:28:08
Rank: #5194
20K → Half
6:43/mi
4:35 split
25K· 15.53 mi
1:44:49
Rank: #5246 (-52)
Half → 25K
6:53/mi
16:41 split
30K· 18.64 mi
2:07:02
Rank: #5290 (-44)
25K → 30K
7:09/mi
22:13 split
20M
2:17:09
Rank: #5427 (-137)
30K → 20M
7:27/mi
10:07 split
21M
2:25:11
Rank: #5527 (-100)
20M → 21M
8:02/mi
8:02 split
35K· 21.75 mi
2:30:24
Rank: #5495 (+32)
21M → 35K
6:58/mi
5:13 split
23M
2:39:57
Rank: #5530 (-35)
35K → 23M
7:38/mi
9:33 split
24M
2:47:35
Rank: #5583 (-53)
23M → 24M
7:38/mi
7:38 split
40K· 24.85 mi
2:54:30
Rank: #5689 (-106)
24M → 40K
8:05/mi
6:55 split
25.2M
2:57:46
Rank: #5798 (-109)
40K → 25.2M
9:28/mi
3:16 split
Finish· 26.22 mi
3:06:19
Rank: #6070 (-272)
25.2M → Finish
8:23/mi
8:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:08
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:38:11
Pace7:29 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:3220:256:3420:25
6:34
-
10K
6.21 mi11:06:2041:136:3820:48
6:42
+0:08
15K
9.32 mi11:27:271:02:206:4121:07
6:48
+0:06
20K
12.43 mi11:48:401:23:336:4321:13
6:50
+0:02
Half
13.11 mi11:53:151:28:086:434:35
6:43
-0:07
25K
15.53 mi12:09:561:44:496:4516:41
6:53
+0:10
30K
18.64 mi12:32:092:07:026:4922:13
7:09
+0:16
20M
20.00 mi12:42:162:17:096:5110:07
7:27
+0:18
21M
21.00 mi12:50:182:25:116:558:02
8:02
+0:35
35K
21.75 mi12:55:312:30:246:555:13
6:58
-1:04
23M
23.00 mi13:05:042:39:576:579:33
7:38
+0:40
24M
24.00 mi13:12:422:47:356:597:38
7:38
0:00
40K
24.85 mi13:19:372:54:307:016:55
8:05
+0:27
25.2M
25.20 mi13:22:532:57:467:033:16
9:28
+1:23
Finish
26.22 mi13:31:263:06:197:078:33
8:23
-1:05

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

6:34 /mi

Average Pace

7:07 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:48

25% of race

Time at Steady Pace

1:36:34

52% of race

Time at Slower Pace

43:57

24% of race

Average Pace: 7:06 /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 mi10:45:3220:256:3420:25
6:34
#4364
10K
6.21 mi11:06:2041:136:3820:48
6:42
#4756
15K
9.32 mi11:27:271:02:206:4121:07
6:48
#5134
20K
12.43 mi11:48:401:23:336:4321:13
6:50
#5194
Half
13.11 mi11:53:151:28:086:434:35
6:43
#5194
25K
15.53 mi12:09:561:44:496:4516:41
6:53
#5246
30K
18.64 mi12:32:092:07:026:4922:13
7:09
#5290
20M
20.00 mi12:42:162:17:096:5110:07
7:27
#5427
21M
21.00 mi12:50:182:25:116:558:02
8:02
#5527
35K
21.75 mi12:55:312:30:246:555:13
6:58
#5495
23M
23.00 mi13:05:042:39:576:579:33
7:38
#5530
24M
24.00 mi13:12:422:47:356:597:38
7:38
#5583
40K
24.85 mi13:19:372:54:307:016:55
8:05
#5689
25.2M
25.20 mi13:22:532:57:467:033:16
9:28
#5798
Finish
26.22 mi13:31:263:06:197:078:33
8:23
#6070
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi4364410141016052(Top 21%)5502(Top 34%)5502(Top 437%)
10K6.21 mi3.10 mi4756-3924452-3514452-3515293(Top 19%)4905(Top 30%)4905(Top 390%)
15K9.32 mi3.11 mi5134-3784778-3264778-3266052(Top 21%)5502(Top 34%)5502(Top 437%)
20K12.43 mi3.11 mi5194-604814-364814-365579(Top 20%)5086(Top 32%)5086(Top 404%)
Half13.11 mi0.68 mi51944817-34817-35423(Top 19%)4978(Top 31%)4978(Top 395%)
25K15.53 mi2.42 mi5246-524845-284845-285504(Top 19%)4994(Top 31%)4994(Top 397%)
30K18.64 mi3.11 mi5290-444862-174862-175606(Top 20%)5018(Top 31%)5018(Top 399%)
20M20.00 mi1.36 mi5427-1374968-1064968-1066630(Top 23%)5590(Top 35%)5590(Top 444%)
21M21.00 mi1.00 mi5527-1005042-745042-747491(Top 26%)5956(Top 37%)5956(Top 473%)
35K21.75 mi0.75 mi5495+325007+355007+355159(Top 18%)4491(Top 28%)4491(Top 357%)
23M23.00 mi1.25 mi5530-355019-125019-127395(Top 26%)5798(Top 36%)5798(Top 461%)
24M24.00 mi1.00 mi5583-535041-225041-228599(Top 30%)6419(Top 40%)6419(Top 510%)
40K24.85 mi0.85 mi5689-1065111-705111-7010732(Top 38%)7410(Top 46%)7410(Top 589%)
25.2M25.20 mi0.35 mi5798-1095185-745185-7414321(Top 50%)9050(Top 56%)9050(Top 719%)
Finish26.22 mi1.02 mi6070-2725366-1815366-18115457(Top 54%)9672(Top 60%)9672(Top 768%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

6052

Males

5502

M60-64

5502

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5293

Males

4905

M60-64

4905

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

6052

Males

5502

M60-64

5502

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5579

Males

5086

M60-64

5086

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5423

Males

4978

M60-64

4978

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5504

Males

4994

M60-64

4994

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5606

Males

5018

M60-64

5018

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6630

Males

5590

M60-64

5590

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7491

Males

5956

M60-64

5956

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5159

Males

4491

M60-64

4491

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7395

Males

5798

M60-64

5798

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8599

Males

6419

M60-64

6419

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10732

Males

7410

M60-64

7410

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14321

Males

9050

M60-64

9050

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15457

Males

9672

M60-64

9672

Passing Analysis

Category:
Athletes Passed
760
Passed By
2466
Net Change
-1706
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4364
5K → 10K44436-392#4364#4756
10K → 15K35413-378#4756#5134
15K → 20K97157-60#5134#5194
20K → Half34340#5194#5194
Half → 25K91143-52#5194#5246
25K → 30K153197-44#5246#5290
30K → 20M43180-137#5290#5427
20M → 21M37137-100#5427#5527
21M → 35K5725+32#5527#5495
35K → 23M75110-35#5495#5530
23M → 24M3992-53#5530#5583
24M → 40K25131-106#5583#5689
40K → 25.2M14123-109#5689#5798
25.2M → Finish16288-272#5798#6070
TOTALS7602466-1706
📊

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