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BOSTON MARATHON 2025

Takashi Koma

Bib: 5112•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Masters (Masters Men)
#0 / 10463
Top 7%
Division (M45-49)
#0 / 2386
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:55
Rank: #3209
Start → 5K
6:25/mi
19:55 split
10K· 6.21 mi
39:56
Rank: #3250 (-41)
5K → 10K
6:27/mi
20:01 split
15K· 9.32 mi
1:00:03
Rank: #3278 (-28)
10K → 15K
6:28/mi
20:07 split
20K· 12.43 mi
1:20:10
Rank: #3168 (+110)
15K → 20K
6:28/mi
20:07 split
Half· 13.11 mi
1:24:32
Rank: #3161 (+7)
20K → Half
6:24/mi
4:22 split
25K· 15.53 mi
1:40:17
Rank: #3086 (+75)
Half → 25K
6:30/mi
15:45 split
30K· 18.64 mi
2:01:19
Rank: #3099 (-13)
25K → 30K
6:46/mi
21:02 split
20M
2:10:51
Rank: #3123 (-24)
30K → 20M
7:01/mi
9:32 split
21M
2:18:20
Rank: #3154 (-31)
20M → 21M
7:29/mi
7:29 split
35K· 21.75 mi
2:23:30
Rank: #3187 (-33)
21M → 35K
6:54/mi
5:10 split
23M
2:32:37
Rank: #3262 (-75)
35K → 23M
7:17/mi
9:07 split
24M
2:39:38
Rank: #3288 (-26)
23M → 24M
7:01/mi
7:01 split
40K· 24.85 mi
2:45:48
Rank: #3322 (-34)
24M → 40K
7:13/mi
6:10 split
25.2M
2:48:35
Rank: #3367 (-45)
40K → 25.2M
8:04/mi
2:47 split
Finish· 26.22 mi
2:55:52
Rank: #3447 (-80)
25.2M → Finish
7:09/mi
7:17 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:32
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:31:20
Pace6:58 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3919:556:2519:55
6:25
-
10K
6.21 mi10:43:4039:566:2620:01
6:27
+0:02
15K
9.32 mi11:03:471:00:036:2720:07
6:28
+0:01
20K
12.43 mi11:23:541:20:106:2720:07
6:28
0:00
Half
13.11 mi11:28:161:24:326:274:22
6:24
-0:04
25K
15.53 mi11:44:011:40:176:2715:45
6:30
+0:06
30K
18.64 mi12:05:032:01:196:3021:02
6:46
+0:16
20M
20.00 mi12:14:352:10:516:339:32
7:01
+0:15
21M
21.00 mi12:22:042:18:206:357:29
7:29
+0:28
35K
21.75 mi12:27:142:23:306:365:10
6:54
-0:35
23M
23.00 mi12:36:212:32:376:389:07
7:17
+0:23
24M
24.00 mi12:43:222:39:386:397:01
7:01
-0:16
40K
24.85 mi12:49:322:45:486:406:10
7:13
+0:12
25.2M
25.20 mi12:52:192:48:356:412:47
8:04
+0:51
Finish
26.22 mi12:59:362:55:526:437:17
7:09
-0:55

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

6:24 /mi

Average Pace

6:43 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:17

57% of race

Time at Steady Pace

42:45

24% of race

Time at Slower Pace

32:50

19% of race

Average Pace: 6:42 /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 mi10:23:3919:556:2519:55
6:25
#3209
10K
6.21 mi10:43:4039:566:2620:01
6:27
#3250
15K
9.32 mi11:03:471:00:036:2720:07
6:28
#3278
20K
12.43 mi11:23:541:20:106:2720:07
6:28
#3168
Half
13.11 mi11:28:161:24:326:274:22
6:24
#3161
25K
15.53 mi11:44:011:40:176:2715:45
6:30
#3086
30K
18.64 mi12:05:032:01:196:3021:02
6:46
#3099
20M
20.00 mi12:14:352:10:516:339:32
7:01
#3123
21M
21.00 mi12:22:042:18:206:357:29
7:29
#3154
35K
21.75 mi12:27:142:23:306:365:10
6:54
#3187
23M
23.00 mi12:36:212:32:376:389:07
7:17
#3262
24M
24.00 mi12:43:222:39:386:397:01
7:01
#3288
40K
24.85 mi12:49:322:45:486:406:10
7:13
#3322
25.2M
25.20 mi12:52:192:48:356:412:47
8:04
#3367
Finish
26.22 mi12:59:362:55:526:437:17
7:09
#3447
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3209304930493419(Top 12%)3243(Top 20%)3243(Top 136%)
10K6.21 mi3.10 mi3250-413089-403089-403332(Top 12%)3167(Top 20%)3167(Top 133%)
15K9.32 mi3.11 mi3278-283116-273116-273419(Top 12%)3243(Top 20%)3243(Top 136%)
20K12.43 mi3.11 mi3168+1103017+993017+992982(Top 10%)2839(Top 18%)2839(Top 119%)
Half13.11 mi0.68 mi3161+73012+53012+53093(Top 11%)2954(Top 18%)2954(Top 124%)
25K15.53 mi2.42 mi3086+752941+712941+712883(Top 10%)2744(Top 17%)2744(Top 115%)
30K18.64 mi3.11 mi3099-132948-72948-73263(Top 11%)3056(Top 19%)3056(Top 128%)
20M20.00 mi1.36 mi3123-242961-132961-134198(Top 15%)3837(Top 24%)3837(Top 161%)
21M21.00 mi1.00 mi3154-312987-262987-264539(Top 16%)4029(Top 25%)4029(Top 169%)
35K21.75 mi0.75 mi3187-333014-273014-274768(Top 17%)4211(Top 26%)4211(Top 176%)
23M23.00 mi1.25 mi3262-753080-663080-665349(Top 19%)4560(Top 28%)4560(Top 191%)
24M24.00 mi1.00 mi3288-263096-163096-164719(Top 17%)4059(Top 25%)4059(Top 170%)
40K24.85 mi0.85 mi3322-343125-293125-295114(Top 18%)4285(Top 27%)4285(Top 180%)
25.2M25.20 mi0.35 mi3367-453159-343159-346268(Top 22%)4901(Top 30%)4901(Top 205%)
Finish26.22 mi1.02 mi3447-803223-643223-646670(Top 23%)5130(Top 32%)5130(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3419

Males

3243

M45-49

3243

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3332

Males

3167

M45-49

3167

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3419

Males

3243

M45-49

3243

15K→20K

9.3 - 12.4 mi

Top 10%
×5story building
+106ft-86ft

Overall

2982

Males

2839

M45-49

2839

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

3093

Males

2954

M45-49

2954

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2883

Males

2744

M45-49

2744

25K→30K

15.5 - 18.6 mi

Top 11%
×9story building
+181ft-148ft

Overall

3263

Males

3056

M45-49

3056

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

4198

Males

3837

M45-49

3837

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4539

Males

4029

M45-49

4029

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4768

Males

4211

M45-49

4211

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5349

Males

4560

M45-49

4560

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4719

Males

4059

M45-49

4059

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5114

Males

4285

M45-49

4285

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6268

Males

4901

M45-49

4901

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6670

Males

5130

M45-49

5130

Passing Analysis

Category:
Athletes Passed
829
Passed By
1067
Net Change
-238
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3209
5K → 10K118159-41#3209#3250
10K → 15K79107-28#3250#3278
15K → 20K13828+110#3278#3168
20K → Half2215+7#3168#3161
Half → 25K10126+75#3161#3086
25K → 30K110123-13#3086#3099
30K → 20M5175-24#3099#3123
20M → 21M3970-31#3123#3154
21M → 35K2356-33#3154#3187
35K → 23M48123-75#3187#3262
23M → 24M3460-26#3262#3288
24M → 40K2963-34#3288#3322
40K → 25.2M1358-45#3322#3367
25.2M → Finish24104-80#3367#3447
TOTALS8291067-238
📊

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