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BOSTON MARATHON 2023

Yuichi Aiba

Bib: 13860•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M55-59)
#0 / 1422
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:12
Rank: #9350
Start → 5K
23:12 | 7:28/mi
10K· 6.21 mi
46:36
Rank: #10018 (-668)
5K → 10K
23:24 | 7:32/mi
15K· 9.32 mi
1:10:26
Rank: #10557 (-539)
10K → 15K
23:50 | 7:40/mi
20K· 12.43 mi
1:34:14
Rank: #10546 (+11)
15K → 20K
23:48 | 7:40/mi
Half· 13.11 mi
1:39:24
Rank: #10559 (-13)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:58:37
Rank: #10787 (-228)
Half → 25K
19:13 | 7:56/mi
30K· 18.64 mi
2:23:57
Rank: #10940 (-153)
25K → 30K
25:20 | 8:09/mi
20M
2:35:18
Rank: #11059 (-119)
30K → 20M
11:21 | 8:21/mi
21M
2:44:40
Rank: #11339 (-280)
20M → 21M
9:22 | 9:22/mi
35K· 21.75 mi
2:51:06
Rank: #11548 (-209)
21M → 35K
6:26 | 8:36/mi
23M
3:01:35
Rank: #11603 (-55)
35K → 23M
10:29 | 8:22/mi
24M
3:09:38
Rank: #11593 (+10)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:16:30
Rank: #11535 (+58)
24M → 40K
6:52 | 8:02/mi
25.2M
3:19:31
Rank: #11507 (+28)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:27:34
Rank: #11475 (+32)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:24
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:48:10
Pace8:15 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1823:127:2823:12
7:28
-
10K
6.21 mi11:14:4246:367:3023:24
7:32
+0:04
15K
9.32 mi11:38:321:10:267:3323:50
7:40
+0:08
20K
12.43 mi12:02:201:34:147:3523:48
7:40
0:00
Half
13.11 mi12:07:301:39:247:355:10
7:34
-0:06
25K
15.53 mi12:26:431:58:377:3819:13
7:56
+0:22
30K
18.64 mi12:52:032:23:577:4325:20
8:09
+0:13
20M
20.00 mi13:03:242:35:187:4611:21
8:21
+0:12
21M
21.00 mi13:12:462:44:407:509:22
9:22
+1:01
35K
21.75 mi13:19:122:51:067:526:26
8:36
-0:46
23M
23.00 mi13:29:413:01:357:5410:29
8:22
-0:14
24M
24.00 mi13:37:443:09:387:548:03
8:03
-0:19
40K
24.85 mi13:44:363:16:307:546:52
8:02
-0:01
25.2M
25.20 mi13:47:373:19:317:553:01
8:45
+0:43
Finish
26.22 mi13:55:403:27:347:558:03
7:54
-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

7:28 /mi

Average Pace

7:55 /mi

Slowest Pace

9:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:24

48% of race

Time at Steady Pace

1:07:31

33% of race

Time at Slower Pace

40:39

20% of race

Average Pace: 7:55 /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 mi10:51:1823:127:2823:12
7:28
#9350
10K
6.21 mi11:14:4246:367:3023:24
7:32
#10018
15K
9.32 mi11:38:321:10:267:3323:50
7:40
#10557
20K
12.43 mi12:02:201:34:147:3523:48
7:40
#10546
Half
13.11 mi12:07:301:39:247:355:10
7:34
#10559
25K
15.53 mi12:26:431:58:377:3819:13
7:56
#10787
30K
18.64 mi12:52:032:23:577:4325:20
8:09
#10940
20M
20.00 mi13:03:242:35:187:4611:21
8:21
#11059
21M
21.00 mi13:12:462:44:407:509:22
9:22
#11339
35K
21.75 mi13:19:122:51:067:526:26
8:36
#11548
23M
23.00 mi13:29:413:01:357:5410:29
8:22
#11603
24M
24.00 mi13:37:443:09:387:548:03
8:03
#11593
40K
24.85 mi13:44:363:16:307:546:52
8:02
#11535
25.2M
25.20 mi13:47:373:19:317:553:01
8:45
#11507
Finish
26.22 mi13:55:403:27:347:558:03
7:54
#11475
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi93507786778611585(Top 44%)8893(Top 59%)8893(Top 625%)
10K6.21 mi3.10 mi10018-6688158-3728158-37210706(Top 40%)8534(Top 56%)8534(Top 600%)
15K9.32 mi3.11 mi10557-5398450-2928450-29211585(Top 44%)8893(Top 59%)8893(Top 625%)
20K12.43 mi3.11 mi10546+118437+138437+1310586(Top 40%)8379(Top 55%)8379(Top 589%)
Half13.11 mi0.68 mi10559-138449-128449-1210781(Top 40%)8507(Top 56%)8507(Top 598%)
25K15.53 mi2.42 mi10787-2288527-788527-7812087(Top 45%)8939(Top 59%)8939(Top 629%)
30K18.64 mi3.11 mi10940-1538553-268553-2612011(Top 45%)8804(Top 58%)8804(Top 619%)
20M20.00 mi1.36 mi11059-1198575-228575-2212674(Top 48%)8983(Top 59%)8983(Top 632%)
21M21.00 mi1.00 mi11339-2808683-1088683-10815308(Top 58%)10051(Top 66%)10051(Top 707%)
35K21.75 mi0.75 mi11548-2098760-778760-7715799(Top 59%)10190(Top 67%)10190(Top 717%)
23M23.00 mi1.25 mi11603-558759+18759+112371(Top 46%)8627(Top 57%)8627(Top 607%)
24M24.00 mi1.00 mi11593+108736+238736+2311562(Top 43%)8185(Top 54%)8185(Top 576%)
40K24.85 mi0.85 mi11535+588686+508686+5010242(Top 38%)7463(Top 49%)7463(Top 525%)
25.2M25.20 mi0.35 mi11507+288666+208666+2010965(Top 41%)7776(Top 51%)7776(Top 547%)
Finish26.22 mi1.02 mi11475+328622+448622+4411372(Top 43%)7974(Top 53%)7974(Top 561%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11585

Males

8893

M55-59

8893

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10706

Males

8534

M55-59

8534

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11585

Males

8893

M55-59

8893

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10586

Males

8379

M55-59

8379

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10781

Males

8507

M55-59

8507

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12087

Males

8939

M55-59

8939

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12011

Males

8804

M55-59

8804

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

12674

Males

8983

M55-59

8983

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15308

Males

10051

M55-59

10051

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15799

Males

10190

M55-59

10190

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12371

Males

8627

M55-59

8627

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11562

Males

8185

M55-59

8185

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10242

Males

7463

M55-59

7463

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10965

Males

7776

M55-59

7776

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11372

Males

7974

M55-59

7974

Passing Analysis

Category:
Athletes Passed
994*
Passed By
3117
Net Change
-2125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9350
5K → 10K90757-668#9350#10018
10K → 15K52590-539#10018#10557
15K → 20K163152+11#10557#10546
20K → Half2740-13#10546#10559
Half → 25K61289-228#10559#10787
25K → 30K136289-153#10787#10940
30K → 20M57*176-119#10940#11059
20M → 21M26306-280#11059#11339
21M → 35K9218-209#11339#11548
35K → 23M79134-55#11548#11603
23M → 24M7161+10#11603#11593
24M → 40K9133+58#11593#11535
40K → 25.2M4315+28#11535#11507
25.2M → Finish8957+32#11507#11475
TOTALS994*3117-2125

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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