Boston Marathon logo
BOSTON MARATHON 2023

Kenichi Kawamoto

Bib: 3779•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 19%
Masters (Masters Men)
#0 / 9891
Top 8%
Division (M55-59)
#0 / 1422
Top 1%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:56
Rank: #3992
Start → 5K
20:56 | 6:44/mi
10K· 6.21 mi
41:39
Rank: #4002 (-10)
5K → 10K
20:43 | 6:40/mi
15K· 9.32 mi
1:02:24
Rank: #3966 (+36)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:23:23
Rank: #3959 (+7)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:27:56
Rank: #3951 (+8)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:19
Rank: #3906 (+45)
Half → 25K
16:23 | 6:45/mi
30K· 18.64 mi
2:05:10
Rank: #3568 (+338)
25K → 30K
20:51 | 6:43/mi
20M
2:14:22
Rank: #3441 (+127)
30K → 20M
9:12 | 6:46/mi
21M
2:21:24
Rank: #3317 (+124)
20M → 21M
7:02 | 7:02/mi
35K· 21.75 mi
2:26:17
Rank: #3273 (+44)
21M → 35K
4:53 | 6:32/mi
23M
2:34:46
Rank: #3193 (+80)
35K → 23M
8:29 | 6:47/mi
24M
2:41:22
Rank: #3138 (+55)
23M → 24M
6:36 | 6:36/mi
40K· 24.85 mi
2:47:15
Rank: #3111 (+27)
24M → 40K
5:53 | 6:53/mi
25.2M
2:49:49
Rank: #3109 (+2)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:56:39
Rank: #3097 (+12)
25.2M → Finish
6:50 | 6:42/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:43
Pace6:46 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3520:566:4420:56
6:44
-
10K
6.21 mi10:43:1841:396:4220:43
6:40
-0:04
15K
9.32 mi11:04:031:02:246:4220:45
6:41
+0:01
20K
12.43 mi11:25:021:23:236:4320:59
6:45
+0:04
Half
13.11 mi11:29:351:27:566:424:33
6:40
-0:05
25K
15.53 mi11:45:581:44:196:4316:23
6:45
+0:05
30K
18.64 mi12:06:492:05:106:4320:51
6:43
-0:02
20M
20.00 mi12:16:012:14:226:439:12
6:46
+0:03
21M
21.00 mi12:23:032:21:246:447:02
7:02
+0:16
35K
21.75 mi12:27:562:26:176:444:53
6:32
-0:30
23M
23.00 mi12:36:252:34:466:448:29
6:47
+0:15
24M
24.00 mi12:43:012:41:226:436:36
6:36
-0:11
40K
24.85 mi12:48:542:47:156:445:53
6:53
+0:17
25.2M
25.20 mi12:51:282:49:496:442:34
7:27
+0:34
Finish
26.22 mi12:58:182:56:396:456:50
6:42
-0:45

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

6:32 /mi

Average Pace

6:45 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:05

99% of race

Time at Steady Pace

2:34

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:22:3520:566:4420:56
6:44
#3992
10K
6.21 mi10:43:1841:396:4220:43
6:40
#4002
15K
9.32 mi11:04:031:02:246:4220:45
6:41
#3966
20K
12.43 mi11:25:021:23:236:4320:59
6:45
#3959
Half
13.11 mi11:29:351:27:566:424:33
6:40
#3951
25K
15.53 mi11:45:581:44:196:4316:23
6:45
#3906
30K
18.64 mi12:06:492:05:106:4320:51
6:43
#3568
20M
20.00 mi12:16:012:14:226:439:12
6:46
#3441
21M
21.00 mi12:23:032:21:246:447:02
7:02
#3317
35K
21.75 mi12:27:562:26:176:444:53
6:32
#3273
23M
23.00 mi12:36:252:34:466:448:29
6:47
#3193
24M
24.00 mi12:43:012:41:226:436:36
6:36
#3138
40K
24.85 mi12:48:542:47:156:445:53
6:53
#3111
25.2M
25.20 mi12:51:282:49:496:442:34
7:27
#3109
Finish
26.22 mi12:58:182:56:396:456:50
6:42
#3097
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi3992374537453911(Top 15%)3675(Top 24%)3675(Top 258%)
10K6.21 mi3.10 mi4002-103763-183763-184021(Top 15%)3780(Top 25%)3780(Top 266%)
15K9.32 mi3.11 mi3966+363733+303733+303911(Top 15%)3675(Top 24%)3675(Top 258%)
20K12.43 mi3.11 mi3959+73725+83725+83994(Top 15%)3748(Top 25%)3748(Top 264%)
Half13.11 mi0.68 mi3951+83716+93716+93970(Top 15%)3722(Top 25%)3722(Top 262%)
25K15.53 mi2.42 mi3906+453678+383678+383781(Top 14%)3555(Top 23%)3555(Top 250%)
30K18.64 mi3.11 mi3568+3383377+3013377+3012467(Top 9%)2349(Top 15%)2349(Top 165%)
20M20.00 mi1.36 mi3441+1273256+1213256+1212650(Top 10%)2507(Top 17%)2507(Top 176%)
21M21.00 mi1.00 mi3317+1243142+1143142+1142310(Top 9%)2183(Top 14%)2183(Top 154%)
35K21.75 mi0.75 mi3273+443099+433099+432586(Top 10%)2445(Top 16%)2445(Top 172%)
23M23.00 mi1.25 mi3193+803027+723027+722522(Top 9%)2368(Top 16%)2368(Top 167%)
24M24.00 mi1.00 mi3138+552976+512976+512565(Top 10%)2393(Top 16%)2393(Top 168%)
40K24.85 mi0.85 mi3111+272947+292947+293210(Top 12%)2940(Top 19%)2940(Top 207%)
25.2M25.20 mi0.35 mi3109+22944+32944+33581(Top 13%)3209(Top 21%)3209(Top 226%)
Finish26.22 mi1.02 mi3097+122932+122932+123533(Top 13%)3158(Top 21%)3158(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3911

Males

3675

M55-59

3675

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4021

Males

3780

M55-59

3780

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3911

Males

3675

M55-59

3675

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3994

Males

3748

M55-59

3748

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3970

Males

3722

M55-59

3722

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3781

Males

3555

M55-59

3555

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2467

Males

2349

M55-59

2349

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2650

Males

2507

M55-59

2507

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2310

Males

2183

M55-59

2183

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2586

Males

2445

M55-59

2445

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2522

Males

2368

M55-59

2368

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2565

Males

2393

M55-59

2393

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3210

Males

2940

M55-59

2940

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3581

Males

3209

M55-59

3209

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3533

Males

3158

M55-59

3158

Passing Analysis

Category:
Athletes Passed
1561
Passed By
666
Net Change
+895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3992
5K → 10K223233-10#3992#4002
10K → 15K13599+36#4002#3966
15K → 20K116109+7#3966#3959
20K → Half2517+8#3959#3951
Half → 25K9954+45#3951#3906
25K → 30K3468+338#3906#3568
30K → 20M13811+127#3568#3441
20M → 21M1328+124#3441#3317
21M → 35K506+44#3317#3273
35K → 23M9919+80#3273#3193
23M → 24M6611+55#3193#3138
24M → 40K5326+27#3138#3111
40K → 25.2M2018+2#3111#3109
25.2M → Finish5947+12#3109#3097
TOTALS1561666+895
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing