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BOSTON MARATHON 2023

Osamu Sato

Bib: 17683•M

GA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:06
Rank: #16877
Start → 5K
26:06 | 8:24/mi
10K· 6.21 mi
53:07
Rank: #18185 (-1308)
5K → 10K
27:01 | 8:42/mi
15K· 9.32 mi
1:18:53
Rank: #17614 (+571)
10K → 15K
25:46 | 8:18/mi
20K· 12.43 mi
1:45:26
Rank: #17450 (+164)
15K → 20K
26:33 | 8:33/mi
Half· 13.11 mi
1:51:13
Rank: #17442 (+8)
20K → Half
5:47 | 8:29/mi
25K· 15.53 mi
2:12:40
Rank: #17577 (-135)
Half → 25K
21:27 | 8:51/mi
30K· 18.64 mi
2:42:48
Rank: #18177 (-600)
25K → 30K
30:08 | 9:42/mi
20M
2:56:08
Rank: #18374 (-197)
30K → 20M
13:20 | 9:49/mi
21M
3:06:42
Rank: #18488 (-114)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:14:03
Rank: #18608 (-120)
21M → 35K
7:21 | 9:49/mi
23M
3:26:56
Rank: #18814 (-206)
35K → 23M
12:53 | 10:17/mi
24M
3:37:37
Rank: #19077 (-263)
23M → 24M
10:41 | 10:41/mi
40K· 24.85 mi
3:46:57
Rank: #19277 (-200)
24M → 40K
9:20 | 10:55/mi
25.2M
3:50:51
Rank: #19344 (-67)
40K → 25.2M
3:54 | 11:19/mi
Finish· 26.22 mi
4:01:59
Rank: #19610 (-266)
25.2M → Finish
11:08 | 10:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:13
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time2:10:46
Pace9:59 /mi
📊Positive Split: 17.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5426:068:2426:06
8:24
-
10K
6.21 mi11:45:5553:078:3327:01
8:42
+0:18
15K
9.32 mi12:11:411:18:538:2825:46
8:18
-0:24
20K
12.43 mi12:38:141:45:268:2926:33
8:33
+0:15
Half
13.11 mi12:44:011:51:138:295:47
8:29
-0:04
25K
15.53 mi13:05:282:12:408:3221:27
8:51
+0:22
30K
18.64 mi13:35:362:42:488:4430:08
9:42
+0:51
20M
20.00 mi13:48:562:56:088:4813:20
9:49
+0:07
21M
21.00 mi13:59:303:06:428:5310:34
10:34
+0:45
35K
21.75 mi14:06:513:14:038:557:21
9:49
-0:45
23M
23.00 mi14:19:443:26:569:0012:53
10:17
+0:28
24M
24.00 mi14:30:253:37:379:0410:41
10:41
+0:24
40K
24.85 mi14:39:453:46:579:089:20
10:55
+0:14
25.2M
25.20 mi14:43:393:50:519:103:54
11:19
+0:24
Finish
26.22 mi14:54:474:01:599:1411:08
10:56
-0:23

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

8:18 /mi

Average Pace

9:14 /mi

Slowest Pace

11:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:40

55% of race

Time at Steady Pace

1:03:42

26% of race

Time at Slower Pace

45:37

19% of race

Average Pace: 9:14 /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 mi11:18:5426:068:2426:06
8:24
#16877
10K
6.21 mi11:45:5553:078:3327:01
8:42
#18185
15K
9.32 mi12:11:411:18:538:2825:46
8:18
#17614
20K
12.43 mi12:38:141:45:268:2926:33
8:33
#17450
Half
13.11 mi12:44:011:51:138:295:47
8:29
#17442
25K
15.53 mi13:05:282:12:408:3221:27
8:51
#17577
30K
18.64 mi13:35:362:42:488:4430:08
9:42
#18177
20M
20.00 mi13:48:562:56:088:4813:20
9:49
#18374
21M
21.00 mi13:59:303:06:428:5310:34
10:34
#18488
35K
21.75 mi14:06:513:14:038:557:21
9:49
#18608
23M
23.00 mi14:19:443:26:569:0012:53
10:17
#18814
24M
24.00 mi14:30:253:37:379:0410:41
10:41
#19077
40K
24.85 mi14:39:453:46:579:089:20
10:55
#19277
25.2M
25.20 mi14:43:393:50:519:103:54
11:19
#19344
Finish
26.22 mi14:54:474:01:599:1411:08
10:56
#19610
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi16877110171101716495(Top 62%)10886(Top 72%)10886(Top 766%)
10K6.21 mi3.10 mi18185-130811529-51211529-51219395(Top 73%)12061(Top 79%)12061(Top 848%)
15K9.32 mi3.11 mi17614+57111310+21911310+21916495(Top 62%)10886(Top 72%)10886(Top 766%)
20K12.43 mi3.11 mi17450+16411242+6811242+6817148(Top 64%)11111(Top 73%)11111(Top 781%)
Half13.11 mi0.68 mi17442+811239+311239+317574(Top 66%)11335(Top 75%)11335(Top 797%)
25K15.53 mi2.42 mi17577-13511274-3511274-3518205(Top 68%)11517(Top 76%)11517(Top 810%)
30K18.64 mi3.11 mi18177-60011480-20611480-20620135(Top 76%)12265(Top 81%)12265(Top 863%)
20M20.00 mi1.36 mi18374-19711557-7711557-7719884(Top 75%)12072(Top 80%)12072(Top 849%)
21M21.00 mi1.00 mi18488-11411597-4011597-4019788(Top 74%)11956(Top 79%)11956(Top 841%)
35K21.75 mi0.75 mi18608-12011650-5311650-5320809(Top 78%)12387(Top 82%)12387(Top 871%)
23M23.00 mi1.25 mi18814-20611711-6111711-6120802(Top 78%)12370(Top 82%)12370(Top 870%)
24M24.00 mi1.00 mi19077-26311817-10611817-10622403(Top 84%)13064(Top 86%)13064(Top 919%)
40K24.85 mi0.85 mi19277-20011901-8411901-8422160(Top 83%)12914(Top 85%)12914(Top 908%)
25.2M25.20 mi0.35 mi19344-6711927-2611927-2621116(Top 79%)12436(Top 82%)12436(Top 875%)
Finish26.22 mi1.02 mi19610-26612023-9612023-9623823(Top 89%)13727(Top 90%)13727(Top 965%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16495

Males

10886

M55-59

10886

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19395

Males

12061

M55-59

12061

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16495

Males

10886

M55-59

10886

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

17148

Males

11111

M55-59

11111

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17574

Males

11335

M55-59

11335

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

18205

Males

11517

M55-59

11517

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20135

Males

12265

M55-59

12265

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

19884

Males

12072

M55-59

12072

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19788

Males

11956

M55-59

11956

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20809

Males

12387

M55-59

12387

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20802

Males

12370

M55-59

12370

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22403

Males

13064

M55-59

13064

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22160

Males

12914

M55-59

12914

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21116

Males

12436

M55-59

12436

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

23823

Males

13727

M55-59

13727

Passing Analysis

Category:
Athletes Passed
1252
Passed By
3985
Net Change
-2733
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16877
5K → 10K391347-1308#16877#18185
10K → 15K60534+571#18185#17614
15K → 20K25894+164#17614#17450
20K → Half3224+8#17450#17442
Half → 25K77212-135#17442#17577
25K → 30K61661-600#17577#18177
30K → 20M38235-197#18177#18374
20M → 21M50164-114#18374#18488
21M → 35K17137-120#18488#18608
35K → 23M32238-206#18608#18814
23M → 24M14277-263#18814#19077
24M → 40K17217-200#19077#19277
40K → 25.2M774-67#19277#19344
25.2M → Finish5271-266#19344#19610
TOTALS12523985-2733
📊

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