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BOSTON MARATHON 2023

Juliano Katayama

Bib: 6670•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
Division (M18-39)
#0 / 5285
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
6:50/mi
21:14
↑ 97↓ 3451.5%
10K· 6.21 mi
6:49/mi
42:24
↑ 79↓ 1380.4%
15K· 9.32 mi
6:51/mi
1:03:41
↑ 67↓ 78
20K· 12.43 mi
6:51/mi
1:24:57
↑ 106↓ 860.1%
Half· 13.11 mi
6:50/mi
1:29:37
↑ 19↓ 370.5%
25K· 15.53 mi
6:51/mi
1:46:13
↑ 66↓ 880.2%
30K· 18.64 mi
7:03/mi
2:08:06
↑ 181↓ 1480.2%
20M
7:05/mi
2:17:44
↑ 64↓ 500.2%
21M
7:29/mi
2:25:13
↑ 106↓ 241.6%
35K· 21.75 mi
6:53/mi
2:30:22
↑ 17↓ 861.7%
23M
6:57/mi
2:39:04
↑ 23↓ 630.6%
24M
6:47/mi
2:45:51
↓ 821.3%
40K· 24.85 mi
6:58/mi
2:51:48
↓ 200.3%
25.2M
7:21/mi
2:54:20
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
3:01:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:37
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:31:24
Pace6:58 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0221:146:5021:14
6:50
-
10K
6.21 mi10:46:1242:246:4921:10
6:49
-0:01
15K
9.32 mi11:07:291:03:416:5021:17
6:51
+0:02
20K
12.43 mi11:28:451:24:576:5021:16
6:51
0:00
Half
13.11 mi11:33:251:29:376:504:40
6:50
-0:01
25K
15.53 mi11:50:011:46:136:5016:36
6:51
+0:01
30K
18.64 mi12:11:542:08:066:5221:53
7:03
+0:12
20M
20.00 mi12:21:322:17:446:539:38
7:05
+0:02
21M
21.00 mi12:29:012:25:136:557:29
7:29
+0:24
35K
21.75 mi12:34:102:30:226:555:09
6:53
-0:36
23M
23.00 mi12:42:522:39:046:558:42
6:57
+0:04
24M
24.00 mi12:49:392:45:516:556:47
6:47
-0:10
40K
24.85 mi12:55:362:51:486:555:57
6:58
+0:11
25.2M
25.20 mi12:58:082:54:206:552:32
7:21
+0:23
Finish
26.22 mi13:04:493:01:016:556:41
6:34
-0:47

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

6:55 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:00

94% of race

Time at Steady Pace

10:01

6% 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 mi10:25:0221:146:5021:14
6:50
#4994
10K
6.21 mi10:46:1242:246:4921:10
6:49
#5152
15K
9.32 mi11:07:291:03:416:5021:17
6:51
#5287
20K
12.43 mi11:28:451:24:576:5021:16
6:51
#5189
Half
13.11 mi11:33:251:29:376:504:40
6:50
#5216
25K
15.53 mi11:50:011:46:136:5016:36
6:51
#5069
30K
18.64 mi12:11:542:08:066:5221:53
7:03
#4946
20M
20.00 mi12:21:322:17:446:539:38
7:05
#4870
21M
21.00 mi12:29:012:25:136:557:29
7:29
#4837
35K
21.75 mi12:34:102:30:226:555:09
6:53
#4820
23M
23.00 mi12:42:522:39:046:558:42
6:57
#4696
24M
24.00 mi12:49:392:45:516:556:47
6:47
#4609
40K
24.85 mi12:55:362:51:486:555:57
6:58
#4545
25.2M
25.20 mi12:58:082:54:206:552:32
7:21
#4514
Finish
26.22 mi13:04:493:01:016:556:41
6:34
#4414
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4994463646365553(Top 21%)5107(Top 34%)5107(Top 97%)
10K6.21 mi3.10 mi5152-1584772-1364772-1365407(Top 20%)4984(Top 33%)4984(Top 94%)
15K9.32 mi3.11 mi5287-1354896-1244896-1245553(Top 21%)5107(Top 34%)5107(Top 97%)
20K12.43 mi3.11 mi5189+984810+864810+864857(Top 18%)4509(Top 30%)4509(Top 85%)
Half13.11 mi0.68 mi5216-274837-274837-275524(Top 21%)5084(Top 34%)5084(Top 96%)
25K15.53 mi2.42 mi5069+1474704+1334704+1334550(Top 17%)4237(Top 28%)4237(Top 80%)
30K18.64 mi3.11 mi4946+1234601+1034601+1034620(Top 17%)4272(Top 28%)4272(Top 81%)
20M20.00 mi1.36 mi4870+764525+764525+764540(Top 17%)4165(Top 27%)4165(Top 79%)
21M21.00 mi1.00 mi4837+334493+324493+324485(Top 17%)4087(Top 27%)4087(Top 77%)
35K21.75 mi0.75 mi4820+174477+164477+164667(Top 18%)4232(Top 28%)4232(Top 80%)
23M23.00 mi1.25 mi4696+1244367+1104367+1103532(Top 13%)3273(Top 22%)3273(Top 62%)
24M24.00 mi1.00 mi4609+874291+764291+763570(Top 13%)3281(Top 22%)3281(Top 62%)
40K24.85 mi0.85 mi4545+644232+594232+593629(Top 14%)3293(Top 22%)3293(Top 62%)
25.2M25.20 mi0.35 mi4514+314204+284204+283193(Top 12%)2916(Top 19%)2916(Top 55%)
Finish26.22 mi1.02 mi4414+1004114+904114+902773(Top 10%)2531(Top 17%)2531(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5553

Males

5107

M18-39

5107

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5407

Males

4984

M18-39

4984

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5553

Males

5107

M18-39

5107

15K→20K

9.3 - 12.4 mi

Top 18%
×5story building
+106ft-86ft

Overall

4857

Males

4509

M18-39

4509

20K→Half

12.4 - 13.1 mi

Top 21%
×2story building
+19ft-37ft

Overall

5524

Males

5084

M18-39

5084

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4550

Males

4237

M18-39

4237

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4620

Males

4272

M18-39

4272

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4540

Males

4165

M18-39

4165

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4485

Males

4087

M18-39

4087

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

4667

Males

4232

M18-39

4232

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3532

Males

3273

M18-39

3273

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3570

Males

3281

M18-39

3281

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3629

Males

3293

M18-39

3293

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3193

Males

2916

M18-39

2916

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2773

Males

2531

M18-39

2531

Passing Analysis

Category:
Athletes Passed
1418
Passed By
838
Net Change
+580
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4994
5K → 10K127285-158#4994#5152
10K → 15K62197-135#5152#5287
15K → 20K16264+98#5287#5189
20K → Half1340-27#5189#5216
Half → 25K17427+147#5216#5069
25K → 30K19774+123#5069#4946
30K → 20M10327+76#4946#4870
20M → 21M7340+33#4870#4837
21M → 35K5134+17#4837#4820
35K → 23M14016+124#4820#4696
23M → 24M925+87#4696#4609
24M → 40K8016+64#4609#4545
40K → 25.2M376+31#4545#4514
25.2M → Finish1077+100#4514#4414
TOTALS1418838+580
📊

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