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BOSTON MARATHON 2023

Naoki Suehiro

Bib: 29874•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:11
Rank: #21792
Start → 5K
29:11 | 9:24/mi
10K· 6.21 mi
57:55
Rank: #21794 (-2)
5K → 10K
28:44 | 9:15/mi
15K· 9.32 mi
1:26:14
Rank: #21534 (+260)
10K → 15K
28:19 | 9:07/mi
20K· 12.43 mi
1:54:56
Rank: #21344 (+190)
15K → 20K
28:42 | 9:14/mi
Half· 13.11 mi
2:00:53
Rank: #21251 (+93)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:23:55
Rank: #21169 (+82)
Half → 25K
23:02 | 9:30/mi
30K· 18.64 mi
2:54:26
Rank: #21035 (+134)
25K → 30K
30:31 | 9:49/mi
20M
3:08:09
Rank: #20981 (+54)
30K → 20M
13:43 | 10:06/mi
21M
3:19:04
Rank: #20946 (+35)
20M → 21M
10:55 | 10:55/mi
35K· 21.75 mi
3:26:32
Rank: #20954 (-8)
21M → 35K
7:28 | 9:59/mi
23M
3:39:13
Rank: #20891 (+63)
35K → 23M
12:41 | 10:08/mi
24M
3:48:52
Rank: #20830 (+61)
23M → 24M
9:39 | 9:39/mi
40K· 24.85 mi
3:57:57
Rank: #20859 (-29)
24M → 40K
9:05 | 10:37/mi
25.2M
4:01:56
Rank: #20873 (-14)
40K → 25.2M
3:59 | 11:33/mi
Finish· 26.22 mi
4:12:19
Rank: #20922 (-49)
25.2M → Finish
10:23 | 10:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:53
Pace9:13 /mi
2nd Half
Distance13.11 mi
Time2:11:26
Pace10:02 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:1329:119:2429:11
9:24
-
10K
6.21 mi12:15:5757:559:1928:44
9:15
-0:09
15K
9.32 mi12:44:161:26:149:1528:19
9:07
-0:08
20K
12.43 mi13:12:581:54:569:1528:42
9:14
+0:07
Half
13.11 mi13:18:552:00:539:135:57
8:43
-0:31
25K
15.53 mi13:41:572:23:559:1623:02
9:30
+0:47
30K
18.64 mi14:12:282:54:269:2130:31
9:49
+0:19
20M
20.00 mi14:26:113:08:099:2413:43
10:06
+0:17
21M
21.00 mi14:37:063:19:049:2910:55
10:55
+0:49
35K
21.75 mi14:44:343:26:329:307:28
9:59
-0:56
23M
23.00 mi14:57:153:39:139:3212:41
10:08
+0:09
24M
24.00 mi15:06:543:48:529:329:39
9:39
-0:29
40K
24.85 mi15:15:593:57:579:349:05
10:37
+0:58
25.2M
25.20 mi15:19:584:01:569:363:59
11:33
+0:56
Finish
26.22 mi15:30:214:12:199:3810:23
10:11
-1:22

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

8:43 /mi

Average Pace

9:38 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:53

48% of race

Time at Steady Pace

1:37:04

38% of race

Time at Slower Pace

34:22

14% of race

Average Pace: 9:37 /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 mi11:47:1329:119:2429:11
9:24
#21792
10K
6.21 mi12:15:5757:559:1928:44
9:15
#21794
15K
9.32 mi12:44:161:26:149:1528:19
9:07
#21534
20K
12.43 mi13:12:581:54:569:1528:42
9:14
#21344
Half
13.11 mi13:18:552:00:539:135:57
8:43
#21251
25K
15.53 mi13:41:572:23:559:1623:02
9:30
#21169
30K
18.64 mi14:12:282:54:269:2130:31
9:49
#21035
20M
20.00 mi14:26:113:08:099:2413:43
10:06
#20981
21M
21.00 mi14:37:063:19:049:2910:55
10:55
#20946
35K
21.75 mi14:44:343:26:329:307:28
9:59
#20954
23M
23.00 mi14:57:153:39:139:3212:41
10:08
#20891
24M
24.00 mi15:06:543:48:529:329:39
9:39
#20830
40K
24.85 mi15:15:593:57:579:349:05
10:37
#20859
25.2M
25.20 mi15:19:584:01:569:363:59
11:33
#20873
Finish
26.22 mi15:30:214:12:199:3810:23
10:11
#20922
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi21792129871298720988(Top 79%)12738(Top 84%)12738(Top 566%)
10K6.21 mi3.10 mi21794-213035-4813035-4821770(Top 82%)13048(Top 86%)13048(Top 579%)
15K9.32 mi3.11 mi21534+26012937+9812937+9820988(Top 79%)12738(Top 84%)12738(Top 566%)
20K12.43 mi3.11 mi21344+19012864+7312864+7320724(Top 78%)12630(Top 83%)12630(Top 561%)
Half13.11 mi0.68 mi21251+9312830+3412830+3419048(Top 72%)11924(Top 79%)11924(Top 529%)
25K15.53 mi2.42 mi21169+8212781+4912781+4920828(Top 78%)12627(Top 83%)12627(Top 561%)
30K18.64 mi3.11 mi21035+13412711+7012711+7020511(Top 77%)12428(Top 82%)12428(Top 552%)
20M20.00 mi1.36 mi20981+5412676+3512676+3520726(Top 78%)12441(Top 82%)12441(Top 552%)
21M21.00 mi1.00 mi20946+3512650+2612650+2620637(Top 78%)12358(Top 81%)12358(Top 549%)
35K21.75 mi0.75 mi20954-812637+1312637+1321191(Top 80%)12573(Top 83%)12573(Top 558%)
23M23.00 mi1.25 mi20891+6312598+3912598+3920368(Top 77%)12187(Top 80%)12187(Top 541%)
24M24.00 mi1.00 mi20830+6112560+3812560+3819722(Top 74%)11883(Top 78%)11883(Top 528%)
40K24.85 mi0.85 mi20859-2912565-512565-521511(Top 81%)12590(Top 83%)12590(Top 559%)
25.2M25.20 mi0.35 mi20873-1412563+212563+221640(Top 81%)12685(Top 84%)12685(Top 563%)
Finish26.22 mi1.02 mi20922-4912572-912572-922250(Top 84%)12971(Top 85%)12971(Top 576%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

20988

Males

12738

M45-49

12738

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

21770

Males

13048

M45-49

13048

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

20988

Males

12738

M45-49

12738

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

20724

Males

12630

M45-49

12630

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19048

Males

11924

M45-49

11924

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

20828

Males

12627

M45-49

12627

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

20511

Males

12428

M45-49

12428

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20726

Males

12441

M45-49

12441

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20637

Males

12358

M45-49

12358

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

21191

Males

12573

M45-49

12573

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20368

Males

12187

M45-49

12187

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19722

Males

11883

M45-49

11883

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21511

Males

12590

M45-49

12590

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21640

Males

12685

M45-49

12685

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

22250

Males

12971

M45-49

12971

Passing Analysis

Category:
Athletes Passed
1748
Passed By
878
Net Change
+870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21792
5K → 10K270272-2#21792#21794
10K → 15K32262+260#21794#21534
15K → 20K25060+190#21534#21344
20K → Half941+93#21344#21251
Half → 25K15068+82#21251#21169
25K → 30K21177+134#21169#21035
30K → 20M9440+54#21035#20981
20M → 21M8045+35#20981#20946
21M → 35K3139-8#20946#20954
35K → 23M10037+63#20954#20891
23M → 24M7312+61#20891#20830
24M → 40K2756-29#20830#20859
40K → 25.2M1428-14#20859#20873
25.2M → Finish3281-49#20873#20922
TOTALS1748878+870
📊

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