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BOSTON MARATHON 2023

Tetsuya Yamasaki

Bib: 9250•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M40-44)
#0 / 2241
Top 25%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:41
Rank: #6113
Start → 5K
21:41 | 6:59/mi
10K· 6.21 mi
42:29
Rank: #5266 (+847)
5K → 10K
20:48 | 6:42/mi
15K· 9.32 mi
1:03:31
Rank: #5122 (+144)
10K → 15K
21:02 | 6:46/mi
20K· 12.43 mi
1:24:35
Rank: #4903 (+219)
15K → 20K
21:04 | 6:47/mi
Half· 13.11 mi
1:29:08
Rank: #4851 (+52)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:30
Rank: #4611 (+240)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:06:43
Rank: #4296 (+315)
25K → 30K
21:13 | 6:50/mi
20M
2:16:01
Rank: #4160 (+136)
30K → 20M
9:18 | 6:51/mi
21M
2:23:11
Rank: #4033 (+127)
20M → 21M
7:10 | 7:10/mi
35K· 21.75 mi
2:28:07
Rank: #3967 (+66)
21M → 35K
4:56 | 6:36/mi
23M
2:36:44
Rank: #3876 (+91)
35K → 23M
8:37 | 6:53/mi
24M
2:43:25
Rank: #3812 (+64)
23M → 24M
6:41 | 6:41/mi
40K· 24.85 mi
2:49:15
Rank: #3740 (+72)
24M → 40K
5:50 | 6:49/mi
25.2M
2:51:44
Rank: #3713 (+27)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:58:25
Rank: #3618 (+95)
25.2M → Finish
6:41 | 6:34/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:08
Pace6:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:17
Pace6:49 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1421:416:5921:41
6:59
-
10K
6.21 mi11:08:0242:296:5020:48
6:42
-0:17
15K
9.32 mi11:29:041:03:316:4921:02
6:46
+0:04
20K
12.43 mi11:50:081:24:356:4821:04
6:47
+0:01
Half
13.11 mi11:54:411:29:086:484:33
6:40
-0:07
25K
15.53 mi12:11:031:45:306:4716:22
6:45
+0:05
30K
18.64 mi12:32:162:06:436:4821:13
6:50
+0:05
20M
20.00 mi12:41:342:16:016:489:18
6:51
+0:01
21M
21.00 mi12:48:442:23:116:497:10
7:10
+0:19
35K
21.75 mi12:53:402:28:076:494:56
6:36
-0:34
23M
23.00 mi13:02:172:36:446:498:37
6:53
+0:17
24M
24.00 mi13:08:582:43:256:496:41
6:41
-0:12
40K
24.85 mi13:14:482:49:156:495:50
6:49
+0:08
25.2M
25.20 mi13:17:172:51:446:492:29
7:12
+0:23
Finish
26.22 mi13:23:582:58:256:496:41
6:34
-0:38

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

6:34 /mi

Average Pace

6:49 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:05

82% of race

Time at Steady Pace

31:20

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:47:1421:416:5921:41
6:59
#6113
10K
6.21 mi11:08:0242:296:5020:48
6:42
#5266
15K
9.32 mi11:29:041:03:316:4921:02
6:46
#5122
20K
12.43 mi11:50:081:24:356:4821:04
6:47
#4903
Half
13.11 mi11:54:411:29:086:484:33
6:40
#4851
25K
15.53 mi12:11:031:45:306:4716:22
6:45
#4611
30K
18.64 mi12:32:162:06:436:4821:13
6:50
#4296
20M
20.00 mi12:41:342:16:016:489:18
6:51
#4160
21M
21.00 mi12:48:442:23:116:497:10
7:10
#4033
35K
21.75 mi12:53:402:28:076:494:56
6:36
#3967
23M
23.00 mi13:02:172:36:446:498:37
6:53
#3876
24M
24.00 mi13:08:582:43:256:496:41
6:41
#3812
40K
24.85 mi13:14:482:49:156:495:50
6:49
#3740
25.2M
25.20 mi13:17:172:51:446:492:29
7:12
#3713
Finish
26.22 mi13:23:582:58:256:496:41
6:34
#3618
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6113558255824798(Top 18%)4469(Top 29%)4469(Top 199%)
10K6.21 mi3.10 mi5266+8474870+7124870+7124271(Top 16%)3999(Top 26%)3999(Top 178%)
15K9.32 mi3.11 mi5122+1444749+1214749+1214798(Top 18%)4469(Top 29%)4469(Top 199%)
20K12.43 mi3.11 mi4903+2194565+1844565+1844243(Top 16%)3971(Top 26%)3971(Top 177%)
Half13.11 mi0.68 mi4851+524517+484517+484018(Top 15%)3770(Top 25%)3770(Top 168%)
25K15.53 mi2.42 mi4611+2404304+2134304+2133742(Top 14%)3522(Top 23%)3522(Top 157%)
30K18.64 mi3.11 mi4296+3154027+2774027+2773187(Top 12%)3003(Top 20%)3003(Top 134%)
20M20.00 mi1.36 mi4160+1363902+1253902+1253088(Top 12%)2902(Top 19%)2902(Top 129%)
21M21.00 mi1.00 mi4033+1273785+1173785+1172933(Top 11%)2750(Top 18%)2750(Top 123%)
35K21.75 mi0.75 mi3967+663726+593726+592986(Top 11%)2797(Top 18%)2797(Top 125%)
23M23.00 mi1.25 mi3876+913647+793647+793122(Top 12%)2908(Top 19%)2908(Top 130%)
24M24.00 mi1.00 mi3812+643582+653582+653023(Top 11%)2807(Top 18%)2807(Top 125%)
40K24.85 mi0.85 mi3740+723516+663516+662949(Top 11%)2716(Top 18%)2716(Top 121%)
25.2M25.20 mi0.35 mi3713+273489+273489+272554(Top 10%)2367(Top 16%)2367(Top 106%)
Finish26.22 mi1.02 mi3618+953404+853404+852759(Top 10%)2517(Top 17%)2517(Top 112%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4798

Males

4469

M40-44

4469

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4271

Males

3999

M40-44

3999

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4798

Males

4469

M40-44

4469

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4243

Males

3971

M40-44

3971

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4018

Males

3770

M40-44

3770

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3742

Males

3522

M40-44

3522

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3187

Males

3003

M40-44

3003

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3088

Males

2902

M40-44

2902

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2933

Males

2750

M40-44

2750

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2986

Males

2797

M40-44

2797

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3122

Males

2908

M40-44

2908

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

3023

Males

2807

M40-44

2807

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2949

Males

2716

M40-44

2716

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2554

Males

2367

M40-44

2367

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2759

Males

2517

M40-44

2517

Passing Analysis

Category:
Athletes Passed
2703
Passed By
208
Net Change
+2495
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6113
5K → 10K86518+847#6113#5266
10K → 15K18945+144#5266#5122
15K → 20K24122+219#5122#4903
20K → Half564+52#4903#4851
Half → 25K2488+240#4851#4611
25K → 30K3238+315#4611#4296
30K → 20M1459+136#4296#4160
20M → 21M14114+127#4160#4033
21M → 35K737+66#4033#3967
35K → 23M10110+91#3967#3876
23M → 24M8319+64#3876#3812
24M → 40K8917+72#3812#3740
40K → 25.2M347+27#3740#3713
25.2M → Finish11520+95#3713#3618
TOTALS2703208+2495
📊

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