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BOSTON MARATHON 2023

Yohei Katayama

Bib: 10493•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 13%
Division (M45-49)
#0 / 2252
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:44/mi
20:55
↑ 97↓ 3451.5%
10K· 6.21 mi
6:43/mi
41:47
↑ 79↓ 1380.4%
15K· 9.32 mi
6:47/mi
1:02:52
↑ 67↓ 78
20K· 12.43 mi
6:56/mi
1:24:25
↑ 106↓ 860.1%
Half· 13.11 mi
6:46/mi
1:29:02
↑ 19↓ 370.5%
25K· 15.53 mi
6:57/mi
1:45:53
↑ 66↓ 880.2%
30K· 18.64 mi
6:59/mi
2:07:34
↑ 181↓ 1480.2%
20M
6:58/mi
2:17:02
↑ 64↓ 500.2%
21M
7:18/mi
2:24:20
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:29:23
↑ 17↓ 861.7%
23M
6:59/mi
2:38:07
↑ 23↓ 630.6%
24M
6:50/mi
2:44:57
↓ 821.3%
40K· 24.85 mi
7:02/mi
2:50:58
↓ 200.3%
25.2M
7:29/mi
2:53:33
↑ 13↓ 160.2%
Finish· 26.22 mi
7:08/mi
3:00:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:02
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:31:47
Pace7:00 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4220:556:4420:55
6:44
-
10K
6.21 mi11:07:3441:476:4320:52
6:43
-0:01
15K
9.32 mi11:28:391:02:526:4521:05
6:47
+0:04
20K
12.43 mi11:50:121:24:256:4821:33
6:56
+0:09
Half
13.11 mi11:54:491:29:026:474:37
6:46
-0:10
25K
15.53 mi12:11:401:45:536:4916:51
6:57
+0:11
30K
18.64 mi12:33:212:07:346:5121:41
6:59
+0:02
20M
20.00 mi12:42:492:17:026:519:28
6:58
-0:01
21M
21.00 mi12:50:072:24:206:527:18
7:18
+0:20
35K
21.75 mi12:55:102:29:236:525:03
6:45
-0:33
23M
23.00 mi13:03:542:38:076:528:44
6:59
+0:14
24M
24.00 mi13:10:442:44:576:526:50
6:50
-0:09
40K
24.85 mi13:16:452:50:586:536:01
7:02
+0:12
25.2M
25.20 mi13:19:202:53:336:532:35
7:29
+0:27
Finish
26.22 mi13:26:363:00:496:547:16
7:08
-0:21

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

6:43 /mi

Average Pace

6:54 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:14

99% of race

Time at Steady Pace

2:35

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:46:4220:556:4420:55
6:44
#3959
10K
6.21 mi11:07:3441:476:4320:52
6:43
#4225
15K
9.32 mi11:28:391:02:526:4521:05
6:47
#4460
20K
12.43 mi11:50:121:24:256:4821:33
6:56
#4764
Half
13.11 mi11:54:491:29:026:474:37
6:46
#4778
25K
15.53 mi12:11:401:45:536:4916:51
6:57
#4849
30K
18.64 mi12:33:212:07:346:5121:41
6:59
#4695
20M
20.00 mi12:42:492:17:026:519:28
6:58
#4594
21M
21.00 mi12:50:072:24:206:527:18
7:18
#4527
35K
21.75 mi12:55:102:29:236:525:03
6:45
#4477
23M
23.00 mi13:03:542:38:076:528:44
6:59
#4396
24M
24.00 mi13:10:442:44:576:526:50
6:50
#4364
40K
24.85 mi13:16:452:50:586:536:01
7:02
#4338
25.2M
25.20 mi13:19:202:53:336:532:35
7:29
#4321
Finish
26.22 mi13:26:363:00:496:547:16
7:08
#4377
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3959371637164968(Top 19%)4612(Top 30%)4612(Top 205%)
10K6.21 mi3.10 mi4225-2663960-2443960-2444501(Top 17%)4206(Top 28%)4206(Top 187%)
15K9.32 mi3.11 mi4460-2354170-2104170-2104968(Top 19%)4612(Top 30%)4612(Top 205%)
20K12.43 mi3.11 mi4764-3044443-2734443-2735572(Top 21%)5120(Top 34%)5120(Top 227%)
Half13.11 mi0.68 mi4778-144452-94452-94942(Top 19%)4574(Top 30%)4574(Top 203%)
25K15.53 mi2.42 mi4849-714510-584510-585272(Top 20%)4859(Top 32%)4859(Top 216%)
30K18.64 mi3.11 mi4695+1544377+1334377+1334218(Top 16%)3932(Top 26%)3932(Top 175%)
20M20.00 mi1.36 mi4594+1014283+944283+943827(Top 14%)3563(Top 23%)3563(Top 158%)
21M21.00 mi1.00 mi4527+674224+594224+593618(Top 14%)3358(Top 22%)3358(Top 149%)
35K21.75 mi0.75 mi4477+504174+504174+503873(Top 15%)3567(Top 24%)3567(Top 158%)
23M23.00 mi1.25 mi4396+814107+674107+673669(Top 14%)3393(Top 22%)3393(Top 151%)
24M24.00 mi1.00 mi4364+324079+284079+283837(Top 14%)3509(Top 23%)3509(Top 156%)
40K24.85 mi0.85 mi4338+264053+264053+264025(Top 15%)3607(Top 24%)3607(Top 160%)
25.2M25.20 mi0.35 mi4321+174034+194034+193854(Top 14%)3444(Top 23%)3444(Top 153%)
Finish26.22 mi1.02 mi4377-564084-504084-505955(Top 22%)4894(Top 32%)4894(Top 217%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

4968

Males

4612

M45-49

4612

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4501

Males

4206

M45-49

4206

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

4968

Males

4612

M45-49

4612

15K→20K

9.3 - 12.4 mi

Top 21%
×5story building
+106ft-86ft

Overall

5572

Males

5120

M45-49

5120

20K→Half

12.4 - 13.1 mi

Top 19%
×2story building
+19ft-37ft

Overall

4942

Males

4574

M45-49

4574

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5272

Males

4859

M45-49

4859

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4218

Males

3932

M45-49

3932

30K→20M

18.6 - 20.0 mi

Top 14%
×5story building
+64ft-50ft

Overall

3827

Males

3563

M45-49

3563

20M→21M

20.0 - 21.0 mi

Top 14%
×8story building
+106ft-24ft

Overall

3618

Males

3358

M45-49

3358

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

3873

Males

3567

M45-49

3567

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3669

Males

3393

M45-49

3393

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3837

Males

3509

M45-49

3509

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4025

Males

3607

M45-49

3607

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3854

Males

3444

M45-49

3444

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5955

Males

4894

M45-49

4894

Passing Analysis

Category:
Athletes Passed
1088
Passed By
1506
Net Change
-418
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3959
5K → 10K108374-266#3959#4225
10K → 15K67302-235#4225#4460
15K → 20K30334-304#4460#4764
20K → Half2236-14#4764#4778
Half → 25K75146-71#4778#4849
25K → 30K21056+154#4849#4695
30K → 20M12221+101#4695#4594
20M → 21M9629+67#4594#4527
21M → 35K6818+50#4527#4477
35K → 23M11837+81#4477#4396
23M → 24M6735+32#4396#4364
24M → 40K4923+26#4364#4338
40K → 25.2M3417+17#4338#4321
25.2M → Finish2278-56#4321#4377
TOTALS10881506-418
📊

Passing Visuals

Category:
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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