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BOSTON MARATHON 2025

Yuichi Aiba

Bib: 19001•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Top 46%
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
7:52/mi
24:26
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
49:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:05/mi
1:14:33
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:39:51
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:45:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:04:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:30:59
↑ 181↓ 1480.2%
20M
8:26/mi
2:42:27
↑ 64↓ 500.2%
21M
8:44/mi
2:51:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
2:57:43
↑ 17↓ 861.7%
23M
8:32/mi
3:08:24
↑ 23↓ 630.6%
24M
8:17/mi
3:16:41
↓ 821.3%
40K· 24.85 mi
8:25/mi
3:23:53
↓ 200.3%
25.2M
9:11/mi
3:27:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:20/mi
3:35:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:14
Pace8:02 /mi
2nd Half
Distance13.11 mi
Time1:50:19
Pace8:25 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3324:267:5224:26
7:52
-
10K
6.21 mi11:43:3349:267:5725:00
8:03
+0:11
15K
9.32 mi12:08:401:14:338:0025:07
8:05
+0:02
20K
12.43 mi12:33:581:39:518:0225:18
8:09
+0:04
Half
13.11 mi12:39:211:45:148:025:23
7:53
-0:16
25K
15.53 mi12:58:552:04:488:0219:34
8:04
+0:11
30K
18.64 mi13:25:062:30:598:0626:11
8:26
+0:22
20M
20.00 mi13:36:342:42:278:0711:28
8:26
0:00
21M
21.00 mi13:45:182:51:118:098:44
8:44
+0:18
35K
21.75 mi13:51:502:57:438:106:32
8:44
0:00
23M
23.00 mi14:02:313:08:248:1110:41
8:32
-0:12
24M
24.00 mi14:10:483:16:418:128:17
8:17
-0:15
40K
24.85 mi14:18:003:23:538:127:12
8:25
+0:08
25.2M
25.20 mi14:21:103:27:038:133:10
9:11
+0:46
Finish
26.22 mi14:29:403:35:338:148:30
8:20
-0:51

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

7:52 /mi

Average Pace

8:14 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:07

91% of race

Time at Steady Pace

18:26

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:13 /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 mi11:18:3324:267:5224:26
7:52
#15363
10K
6.21 mi11:43:3349:267:5725:00
8:03
#16135
15K
9.32 mi12:08:401:14:338:0025:07
8:05
#16309
20K
12.43 mi12:33:581:39:518:0225:18
8:09
#16200
Half
13.11 mi12:39:211:45:148:025:23
7:53
#16148
25K
15.53 mi12:58:552:04:488:0219:34
8:04
#15834
30K
18.64 mi13:25:062:30:598:0626:11
8:26
#15503
20M
20.00 mi13:36:342:42:278:0711:28
8:26
#15305
21M
21.00 mi13:45:182:51:118:098:44
8:44
#15039
35K
21.75 mi13:51:502:57:438:106:32
8:44
#15094
23M
23.00 mi14:02:313:08:248:1110:41
8:32
#14954
24M
24.00 mi14:10:483:16:418:128:17
8:17
#14848
40K
24.85 mi14:18:003:23:538:127:12
8:25
#14759
25.2M
25.20 mi14:21:103:27:038:133:10
9:11
#14711
Finish
26.22 mi14:29:403:35:338:148:30
8:20
#14709
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15363105611056116627(Top 59%)11060(Top 69%)11060(Top 671%)
10K6.21 mi3.10 mi16135-77210863-30210863-30216802(Top 59%)11160(Top 69%)11160(Top 677%)
15K9.32 mi3.11 mi16309-17410942-7910942-7916627(Top 59%)11060(Top 69%)11060(Top 671%)
20K12.43 mi3.11 mi16200+10910879+6310879+6315926(Top 56%)10711(Top 67%)10711(Top 650%)
Half13.11 mi0.68 mi16148+5210855+2410855+2414959(Top 53%)10321(Top 64%)10321(Top 626%)
25K15.53 mi2.42 mi15834+31410714+14110714+14114416(Top 51%)9938(Top 62%)9938(Top 603%)
30K18.64 mi3.11 mi15503+33110509+20510509+20514304(Top 50%)9732(Top 60%)9732(Top 591%)
20M20.00 mi1.36 mi15305+19810398+11110398+11113378(Top 47%)9164(Top 57%)9164(Top 556%)
21M21.00 mi1.00 mi15039+26610248+15010248+15011879(Top 42%)8327(Top 52%)8327(Top 505%)
35K21.75 mi0.75 mi15094-5510259-1110259-1116847(Top 59%)10543(Top 65%)10543(Top 640%)
23M23.00 mi1.25 mi14954+14010171+8810171+8813509(Top 48%)8945(Top 56%)8945(Top 543%)
24M24.00 mi1.00 mi14848+10610089+8210089+8213134(Top 46%)8718(Top 54%)8718(Top 529%)
40K24.85 mi0.85 mi14759+8910021+6810021+6812912(Top 45%)8491(Top 53%)8491(Top 515%)
25.2M25.20 mi0.35 mi14711+489992+299992+2912798(Top 45%)8383(Top 52%)8383(Top 509%)
Finish26.22 mi1.02 mi14709+29964+289964+2815171(Top 53%)9555(Top 59%)9555(Top 580%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16627

Males

11060

M55-59

11060

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16802

Males

11160

M55-59

11160

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16627

Males

11060

M55-59

11060

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15926

Males

10711

M55-59

10711

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14959

Males

10321

M55-59

10321

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14416

Males

9938

M55-59

9938

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14304

Males

9732

M55-59

9732

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13378

Males

9164

M55-59

9164

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11879

Males

8327

M55-59

8327

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16847

Males

10543

M55-59

10543

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13509

Males

8945

M55-59

8945

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13134

Males

8718

M55-59

8718

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12912

Males

8491

M55-59

8491

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12798

Males

8383

M55-59

8383

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

15171

Males

9555

M55-59

9555

Passing Analysis

Category:
Athletes Passed
2440
Passed By
1786
Net Change
+654
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15363
5K → 10K101873-772#15363#16135
10K → 15K147321-174#16135#16309
15K → 20K268159+109#16309#16200
20K → Half597+52#16200#16148
Half → 25K34531+314#16148#15834
25K → 30K40978+331#15834#15503
30K → 20M22224+198#15503#15305
20M → 21M28115+266#15305#15039
21M → 35K4095-55#15039#15094
35K → 23M18444+140#15094#14954
23M → 24M13024+106#14954#14848
24M → 40K11526+89#14848#14759
40K → 25.2M6416+48#14759#14711
25.2M → Finish7573+2#14711#14709
TOTALS24401786+654
📊

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