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BOSTON MARATHON 2023

John Adachi

Bib: 12844•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M55-59)
#0 / 1422
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:09
Rank: #9225
Start → 5K
23:09 | 7:27/mi
10K· 6.21 mi
46:24
Rank: #9728 (-503)
5K → 10K
23:15 | 7:29/mi
15K· 9.32 mi
1:09:39
Rank: #9802 (-74)
10K → 15K
23:15 | 7:29/mi
20K· 12.43 mi
1:33:25
Rank: #9985 (-183)
15K → 20K
23:46 | 7:39/mi
Half· 13.11 mi
1:38:35
Rank: #10013 (-28)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:25
Rank: #10118 (-105)
Half → 25K
18:50 | 7:46/mi
30K· 18.64 mi
2:22:05
Rank: #10145 (-27)
25K → 30K
24:40 | 7:56/mi
20M
2:32:59
Rank: #10151 (-6)
30K → 20M
10:54 | 8:01/mi
21M
2:41:29
Rank: #10137 (+14)
20M → 21M
8:30 | 8:30/mi
35K· 21.75 mi
2:47:30
Rank: #10208 (-71)
21M → 35K
6:01 | 8:03/mi
23M
2:57:37
Rank: #10196 (+12)
35K → 23M
10:07 | 8:05/mi
24M
3:05:33
Rank: #10179 (+17)
23M → 24M
7:56 | 7:56/mi
40K· 24.85 mi
3:12:25
Rank: #10153 (+26)
24M → 40K
6:52 | 8:02/mi
25.2M
3:15:26
Rank: #10167 (-14)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:23:25
Rank: #10175 (-8)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:35
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:44:50
Pace8:00 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5623:097:2723:09
7:27
-
10K
6.21 mi11:14:1146:247:2823:15
7:29
+0:02
15K
9.32 mi11:37:261:09:397:2823:15
7:29
0:00
20K
12.43 mi12:01:121:33:257:3123:46
7:39
+0:10
Half
13.11 mi12:06:221:38:357:315:10
7:34
-0:05
25K
15.53 mi12:25:121:57:257:3418:50
7:46
+0:12
30K
18.64 mi12:49:522:22:057:3724:40
7:56
+0:10
20M
20.00 mi13:00:462:32:597:3910:54
8:01
+0:05
21M
21.00 mi13:09:162:41:297:418:30
8:30
+0:29
35K
21.75 mi13:15:172:47:307:426:01
8:03
-0:27
23M
23.00 mi13:25:242:57:377:4310:07
8:05
+0:02
24M
24.00 mi13:33:203:05:337:447:56
7:56
-0:09
40K
24.85 mi13:40:123:12:257:446:52
8:02
+0:06
25.2M
25.20 mi13:43:133:15:267:453:01
8:45
+0:43
Finish
26.22 mi13:51:123:23:257:467:59
7:50
-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

7:27 /mi

Average Pace

7:46 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:54

94% of race

Time at Steady Pace

11:31

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:45 /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 mi10:50:5623:097:2723:09
7:27
#9225
10K
6.21 mi11:14:1146:247:2823:15
7:29
#9728
15K
9.32 mi11:37:261:09:397:2823:15
7:29
#9802
20K
12.43 mi12:01:121:33:257:3123:46
7:39
#9985
Half
13.11 mi12:06:221:38:357:315:10
7:34
#10013
25K
15.53 mi12:25:121:57:257:3418:50
7:46
#10118
30K
18.64 mi12:49:522:22:057:3724:40
7:56
#10145
20M
20.00 mi13:00:462:32:597:3910:54
8:01
#10151
21M
21.00 mi13:09:162:41:297:418:30
8:30
#10137
35K
21.75 mi13:15:172:47:307:426:01
8:03
#10208
23M
23.00 mi13:25:242:57:377:4310:07
8:05
#10196
24M
24.00 mi13:33:203:05:337:447:56
7:56
#10179
40K
24.85 mi13:40:123:12:257:446:52
8:02
#10153
25.2M
25.20 mi13:43:133:15:267:453:01
8:45
#10167
Finish
26.22 mi13:51:123:23:257:467:59
7:50
#10175
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi92257723772310037(Top 38%)8163(Top 54%)8163(Top 574%)
10K6.21 mi3.10 mi9728-5038001-2788001-27810308(Top 39%)8332(Top 55%)8332(Top 586%)
15K9.32 mi3.11 mi9802-748042-418042-4110037(Top 38%)8163(Top 54%)8163(Top 574%)
20K12.43 mi3.11 mi9985-1838144-1028144-10210498(Top 39%)8340(Top 55%)8340(Top 586%)
Half13.11 mi0.68 mi10013-288161-178161-1710754(Top 40%)8480(Top 56%)8480(Top 596%)
25K15.53 mi2.42 mi10118-1058193-328193-3210830(Top 41%)8410(Top 55%)8410(Top 591%)
30K18.64 mi3.11 mi10145-278168+258168+2510424(Top 39%)8051(Top 53%)8051(Top 566%)
20M20.00 mi1.36 mi10151-68138+308138+3010403(Top 39%)7961(Top 52%)7961(Top 560%)
21M21.00 mi1.00 mi10137+148114+248114+2410473(Top 39%)7842(Top 52%)7842(Top 551%)
35K21.75 mi0.75 mi10208-718132-188132-1812378(Top 46%)8712(Top 57%)8712(Top 613%)
23M23.00 mi1.25 mi10196+128087+458087+4510299(Top 39%)7637(Top 50%)7637(Top 537%)
24M24.00 mi1.00 mi10179+178054+338054+3310750(Top 40%)7773(Top 51%)7773(Top 547%)
40K24.85 mi0.85 mi10153+268015+398015+3910230(Top 38%)7451(Top 49%)7451(Top 524%)
25.2M25.20 mi0.35 mi10167-148011+48011+410952(Top 41%)7763(Top 51%)7763(Top 546%)
Finish26.22 mi1.02 mi10175-87976+357976+3510914(Top 41%)7751(Top 51%)7751(Top 545%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10037

Males

8163

M55-59

8163

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10308

Males

8332

M55-59

8332

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10037

Males

8163

M55-59

8163

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

10498

Males

8340

M55-59

8340

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10754

Males

8480

M55-59

8480

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10830

Males

8410

M55-59

8410

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10424

Males

8051

M55-59

8051

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10403

Males

7961

M55-59

7961

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10473

Males

7842

M55-59

7842

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12378

Males

8712

M55-59

8712

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10299

Males

7637

M55-59

7637

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10750

Males

7773

M55-59

7773

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10230

Males

7451

M55-59

7451

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10952

Males

7763

M55-59

7763

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10914

Males

7751

M55-59

7751

Passing Analysis

Category:
Athletes Passed
1172*
Passed By
2121
Net Change
-950
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9225
5K → 10K128631-503#9225#9728
10K → 15K139213-74#9728#9802
15K → 20K106*289-183#9802#9985
20K → Half2047-28#9985#10013
Half → 25K86191-105#10013#10118
25K → 30K156*183-27#10118#10145
30K → 20M74*80-6#10145#10151
20M → 21M9480+14#10151#10137
21M → 35K2697-71#10137#10208
35K → 23M8876+12#10208#10196
23M → 24M8467+17#10196#10179
24M → 40K7246+26#10179#10153
40K → 25.2M27*41-14#10153#10167
25.2M → Finish7280-8#10167#10175
TOTALS1172*2121-950

* 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