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BOSTON MARATHON 2025

Takahiro Arai

Bib: 7037•M

NJ

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 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:23/mi
19:50
↑ 97↓ 3451.5%
10K· 6.21 mi
6:26/mi
39:49
↑ 79↓ 1380.4%
15K· 9.32 mi
6:27/mi
59:52
↑ 67↓ 78
20K· 12.43 mi
6:31/mi
1:20:06
↑ 106↓ 860.1%
Half· 13.11 mi
6:18/mi
1:24:24
↑ 19↓ 370.5%
25K· 15.53 mi
6:29/mi
1:40:08
↑ 66↓ 880.2%
30K· 18.64 mi
6:33/mi
2:00:29
↑ 181↓ 1480.2%
20M
6:37/mi
2:09:29
↑ 64↓ 500.2%
21M
6:47/mi
2:16:16
↑ 106↓ 241.6%
35K· 21.75 mi
6:32/mi
2:21:09
↑ 17↓ 861.7%
23M
6:39/mi
2:29:28
↑ 23↓ 630.6%
24M
6:28/mi
2:35:56
↓ 821.3%
40K· 24.85 mi
6:39/mi
2:41:37
↓ 200.3%
25.2M
7:24/mi
2:44:10
↑ 13↓ 160.2%
Finish· 26.22 mi
6:23/mi
2:50:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:24
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:26:16
Pace6:35 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:1919:506:2319:50
6:23
-
10K
6.21 mi10:46:1839:496:2419:59
6:26
+0:03
15K
9.32 mi11:06:2159:526:2520:03
6:27
+0:01
20K
12.43 mi11:26:351:20:066:2720:14
6:31
+0:04
Half
13.11 mi11:30:531:24:246:264:18
6:18
-0:13
25K
15.53 mi11:46:371:40:086:2715:44
6:29
+0:11
30K
18.64 mi12:06:582:00:296:2820:21
6:33
+0:04
20M
20.00 mi12:15:582:09:296:289:00
6:37
+0:04
21M
21.00 mi12:22:452:16:166:296:47
6:47
+0:10
35K
21.75 mi12:27:382:21:096:294:53
6:32
-0:15
23M
23.00 mi12:35:572:29:286:308:19
6:39
+0:07
24M
24.00 mi12:42:252:35:566:306:28
6:28
-0:11
40K
24.85 mi12:48:062:41:376:305:41
6:39
+0:11
25.2M
25.20 mi12:50:392:44:106:312:33
7:24
+0:45
Finish
26.22 mi12:57:092:50:406:316:30
6:23
-1:01

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

6:18 /mi

Average Pace

6:31 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:07

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:31 /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 mi10:26:1919:506:2319:50
6:23
#3006
10K
6.21 mi10:46:1839:496:2419:59
6:26
#3124
15K
9.32 mi11:06:2159:526:2520:03
6:27
#3157
20K
12.43 mi11:26:351:20:066:2720:14
6:31
#3134
Half
13.11 mi11:30:531:24:246:264:18
6:18
#3105
25K
15.53 mi11:46:371:40:086:2715:44
6:29
#3026
30K
18.64 mi12:06:582:00:296:2820:21
6:33
#2812
20M
20.00 mi12:15:582:09:296:289:00
6:37
#2725
21M
21.00 mi12:22:452:16:166:296:47
6:47
#2602
35K
21.75 mi12:27:382:21:096:294:53
6:32
#2592
23M
23.00 mi12:35:572:29:286:308:19
6:39
#2508
24M
24.00 mi12:42:252:35:566:306:28
6:28
#2456
40K
24.85 mi12:48:062:41:376:305:41
6:39
#2422
25.2M
25.20 mi12:50:392:44:106:312:33
7:24
#2423
Finish
26.22 mi12:57:092:50:406:316:30
6:23
#2386
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3006285928593274(Top 12%)3110(Top 19%)3110(Top 55%)
10K6.21 mi3.10 mi3124-1182971-1122971-1123259(Top 11%)3097(Top 19%)3097(Top 55%)
15K9.32 mi3.11 mi3157-333005-343005-343274(Top 12%)3110(Top 19%)3110(Top 55%)
20K12.43 mi3.11 mi3134+232986+192986+193202(Top 11%)3037(Top 19%)3037(Top 54%)
Half13.11 mi0.68 mi3105+292959+272959+272555(Top 9%)2444(Top 15%)2444(Top 43%)
25K15.53 mi2.42 mi3026+792884+752884+752835(Top 10%)2697(Top 17%)2697(Top 48%)
30K18.64 mi3.11 mi2812+2142678+2062678+2062198(Top 8%)2082(Top 13%)2082(Top 37%)
20M20.00 mi1.36 mi2725+872595+832595+832138(Top 8%)2025(Top 13%)2025(Top 36%)
21M21.00 mi1.00 mi2602+1232479+1162479+1161496(Top 5%)1412(Top 9%)1412(Top 25%)
35K21.75 mi0.75 mi2592+102468+112468+112619(Top 9%)2438(Top 15%)2438(Top 43%)
23M23.00 mi1.25 mi2508+842387+812387+812022(Top 7%)1892(Top 12%)1892(Top 34%)
24M24.00 mi1.00 mi2456+522337+502337+501924(Top 7%)1786(Top 11%)1786(Top 32%)
40K24.85 mi0.85 mi2422+342299+382299+382167(Top 8%)1993(Top 12%)1993(Top 35%)
25.2M25.20 mi0.35 mi2423-1229922992942(Top 10%)2621(Top 16%)2621(Top 46%)
Finish26.22 mi1.02 mi2386+372261+382261+382232(Top 8%)2045(Top 13%)2045(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3274

Males

3110

M18-39

3110

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3259

Males

3097

M18-39

3097

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3274

Males

3110

M18-39

3110

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

3202

Males

3037

M18-39

3037

20K→Half

12.4 - 13.1 mi

Top 9%
×2story building
+19ft-37ft

Overall

2555

Males

2444

M18-39

2444

Half→25K

13.1 - 15.5 mi

Top 10%
×4story building
+66ft-88ft

Overall

2835

Males

2697

M18-39

2697

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2198

Males

2082

M18-39

2082

30K→20M

18.6 - 20.0 mi

Top 8%
×5story building
+64ft-50ft

Overall

2138

Males

2025

M18-39

2025

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1496

Males

1412

M18-39

1412

21M→35K

21.0 - 21.8 mi

Top 9%
×7story building
+17ft-86ft

Overall

2619

Males

2438

M18-39

2438

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

2022

Males

1892

M18-39

1892

23M→24M

23.0 - 24.0 mi

Top 7%
×6story building
+12ft-82ft

Overall

1924

Males

1786

M18-39

1786

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2167

Males

1993

M18-39

1993

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2942

Males

2621

M18-39

2621

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2story building
+22ft-21ft

Overall

2232

Males

2045

M18-39

2045

Passing Analysis

Category:
Athletes Passed
1171
Passed By
551
Net Change
+620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3006
5K → 10K74192-118#3006#3124
10K → 15K76109-33#3124#3157
15K → 20K9673+23#3157#3134
20K → Half334+29#3134#3105
Half → 25K10122+79#3105#3026
25K → 30K24127+214#3026#2812
30K → 20M10619+87#2812#2725
20M → 21M1285+123#2725#2602
21M → 35K3323+10#2602#2592
35K → 23M9511+84#2592#2508
23M → 24M6412+52#2508#2456
24M → 40K5420+34#2456#2422
40K → 25.2M1819-1#2422#2423
25.2M → Finish5215+37#2423#2386
TOTALS1171551+620
📊

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