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BOSTON MARATHON 2023

Daigo Yachi

Bib: 12735•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:26
Rank: #12954
Start → 5K
24:26 | 7:52/mi
10K· 6.21 mi
49:24
Rank: #13987 (-1033)
5K → 10K
24:58 | 8:02/mi
15K· 9.32 mi
1:13:57
Rank: #13852 (+135)
10K → 15K
24:33 | 7:54/mi
20K· 12.43 mi
1:42:59
Rank: #16163 (-2311)
15K → 20K
29:02 | 9:21/mi
Half· 13.11 mi
1:48:17
Rank: #15984 (+179)
20K → Half
5:18 | 7:46/mi
25K· 15.53 mi
2:09:25
Rank: #16259 (-275)
Half → 25K
21:08 | 8:43/mi
30K· 18.64 mi
2:38:24
Rank: #16754 (-495)
25K → 30K
28:59 | 9:20/mi
20M
2:51:41
Rank: #17031 (-277)
30K → 20M
13:17 | 9:46/mi
21M
3:01:29
Rank: #17044 (-13)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
3:08:06
Rank: #17048 (-4)
21M → 35K
6:37 | 8:51/mi
23M
3:19:50
Rank: #17096 (-48)
35K → 23M
11:44 | 9:22/mi
24M
3:29:13
Rank: #17203 (-107)
23M → 24M
9:23 | 9:23/mi
40K· 24.85 mi
3:38:02
Rank: #17436 (-233)
24M → 40K
8:49 | 10:19/mi
25.2M
3:41:50
Rank: #17535 (-99)
40K → 25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
3:51:22
Rank: #17644 (-109)
25.2M → Finish
9:32 | 9:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:17
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:03:05
Pace9:23 /mi
📊Positive Split: 13.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2024:267:5224:26
7:52
-
10K
6.21 mi11:17:1849:247:5724:58
8:02
+0:10
15K
9.32 mi11:41:511:13:577:5624:33
7:54
-0:08
20K
12.43 mi12:10:531:42:598:1729:02
9:21
+1:27
Half
13.11 mi12:16:111:48:178:165:18
7:46
-1:35
25K
15.53 mi12:37:192:09:258:2021:08
8:43
+0:57
30K
18.64 mi13:06:182:38:248:3028:59
9:20
+0:37
20M
20.00 mi13:19:352:51:418:3513:17
9:46
+0:26
21M
21.00 mi13:29:233:01:298:399:48
9:48
+0:02
35K
21.75 mi13:36:003:08:068:396:37
8:51
-0:57
23M
23.00 mi13:47:443:19:508:4111:44
9:22
+0:31
24M
24.00 mi13:57:073:29:138:439:23
9:23
+0:01
40K
24.85 mi14:05:563:38:028:468:49
10:19
+0:56
25.2M
25.20 mi14:09:443:41:508:483:48
11:01
+0:42
Finish
26.22 mi14:19:163:51:228:509:32
9:21
-1:40

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

7:46 /mi

Average Pace

8:50 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:00

46% of race

Time at Steady Pace

1:51:45

48% of race

Time at Slower Pace

12:37

5% of race

Average Pace: 8:49 /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 mi10:52:2024:267:5224:26
7:52
#12954
10K
6.21 mi11:17:1849:247:5724:58
8:02
#13987
15K
9.32 mi11:41:511:13:577:5624:33
7:54
#13852
20K
12.43 mi12:10:531:42:598:1729:02
9:21
#16163
Half
13.11 mi12:16:111:48:178:165:18
7:46
#15984
25K
15.53 mi12:37:192:09:258:2021:08
8:43
#16259
30K
18.64 mi13:06:182:38:248:3028:59
9:20
#16754
20M
20.00 mi13:19:352:51:418:3513:17
9:46
#17031
21M
21.00 mi13:29:233:01:298:399:48
9:48
#17044
35K
21.75 mi13:36:003:08:068:396:37
8:51
#17048
23M
23.00 mi13:47:443:19:508:4111:44
9:22
#17096
24M
24.00 mi13:57:073:29:138:439:23
9:23
#17203
40K
24.85 mi14:05:563:38:028:468:49
10:19
#17436
25.2M
25.20 mi14:09:443:41:508:483:48
11:01
#17535
Finish
26.22 mi14:19:163:51:228:509:32
9:21
#17644
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi129549526952613550(Top 51%)9734(Top 64%)9734(Top 474%)
10K6.21 mi3.10 mi13987-10339934-4089934-40815061(Top 57%)10335(Top 68%)10335(Top 504%)
15K9.32 mi3.11 mi13852+1359867+679867+6713550(Top 51%)9734(Top 64%)9734(Top 474%)
20K12.43 mi3.11 mi16163-231110742-87510742-87521078(Top 79%)12776(Top 84%)12776(Top 623%)
Half13.11 mi0.68 mi15984+17910665+7710665+7712442(Top 47%)9278(Top 61%)9278(Top 452%)
25K15.53 mi2.42 mi16259-27510750-8510750-8517461(Top 66%)11182(Top 74%)11182(Top 545%)
30K18.64 mi3.11 mi16754-49510906-15610906-15618737(Top 70%)11665(Top 77%)11665(Top 568%)
20M20.00 mi1.36 mi17031-27711024-11811024-11819764(Top 74%)12007(Top 79%)12007(Top 585%)
21M21.00 mi1.00 mi17044-1311006+1811006+1817245(Top 65%)10893(Top 72%)10893(Top 531%)
35K21.75 mi0.75 mi17048-411001+511001+517157(Top 64%)10776(Top 71%)10776(Top 525%)
23M23.00 mi1.25 mi17096-4810999+210999+217803(Top 67%)11031(Top 73%)11031(Top 538%)
24M24.00 mi1.00 mi17203-10711027-2811027-2818761(Top 70%)11430(Top 75%)11430(Top 557%)
40K24.85 mi0.85 mi17436-23311111-8411111-8420756(Top 78%)12260(Top 81%)12260(Top 597%)
25.2M25.20 mi0.35 mi17535-9911146-3511146-3520472(Top 77%)12139(Top 80%)12139(Top 592%)
Finish26.22 mi1.02 mi17644-10911181-3511181-3519577(Top 74%)11783(Top 78%)11783(Top 574%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13550

Males

9734

M50-54

9734

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15061

Males

10335

M50-54

10335

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13550

Males

9734

M50-54

9734

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

21078

Males

12776

M50-54

12776

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

12442

Males

9278

M50-54

9278

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17461

Males

11182

M50-54

11182

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

18737

Males

11665

M50-54

11665

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

19764

Males

12007

M50-54

12007

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17245

Males

10893

M50-54

10893

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

17157

Males

10776

M50-54

10776

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17803

Males

11031

M50-54

11031

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

18761

Males

11430

M50-54

11430

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20756

Males

12260

M50-54

12260

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20472

Males

12139

M50-54

12139

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

19577

Males

11783

M50-54

11783

Passing Analysis

Category:
Athletes Passed
946
Passed By
5636
Net Change
-4690
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12954
5K → 10K471080-1033#12954#13987
10K → 15K257122+135#13987#13852
15K → 20K92320-2311#13852#16163
20K → Half1790+179#16163#15984
Half → 25K75350-275#15984#16259
25K → 30K75570-495#16259#16754
30K → 20M28305-277#16754#17031
20M → 21M7790-13#17031#17044
21M → 35K5054-4#17044#17048
35K → 23M68116-48#17048#17096
23M → 24M29136-107#17096#17203
24M → 40K17250-233#17203#17436
40K → 25.2M8107-99#17436#17535
25.2M → Finish27136-109#17535#17644
TOTALS9465636-4690
📊

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