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BOSTON MARATHON 2023

Masashi Furukawa

Bib: 5268•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M45-49)
#0 / 2252
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:32
Rank: #5792
Start → 5K
21:32 | 6:56/mi
10K· 6.21 mi
43:10
Rank: #6165 (-373)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:04:04
Rank: #5662 (+503)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:25:07
Rank: #5314 (+348)
15K → 20K
21:03 | 6:47/mi
Half· 13.11 mi
1:29:43
Rank: #5288 (+26)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:48:09
Rank: #5982 (-694)
Half → 25K
18:26 | 7:36/mi
30K· 18.64 mi
2:09:53
Rank: #5626 (+356)
25K → 30K
21:44 | 7:00/mi
20M
2:19:33
Rank: #5528 (+98)
30K → 20M
9:40 | 7:07/mi
21M
2:27:03
Rank: #5433 (+95)
20M → 21M
7:30 | 7:30/mi
35K· 21.75 mi
2:32:01
Rank: #5323 (+110)
21M → 35K
4:58 | 6:38/mi
23M
2:40:50
Rank: #5185 (+138)
35K → 23M
8:49 | 7:03/mi
24M
2:47:50
Rank: #5104 (+81)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
2:54:09
Rank: #5083 (+21)
24M → 40K
6:19 | 7:23/mi
25.2M
2:56:55
Rank: #5096 (-13)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:04:18
Rank: #5105 (-9)
25.2M → Finish
7:23 | 7:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:43
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:34:35
Pace7:13 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1621:326:5621:32
6:56
-
10K
6.21 mi10:45:5443:106:5721:38
6:58
+0:02
15K
9.32 mi11:06:481:04:046:5220:54
6:44
-0:14
20K
12.43 mi11:27:511:25:076:5121:03
6:47
+0:03
Half
13.11 mi11:32:271:29:436:514:36
6:45
-0:02
25K
15.53 mi11:50:531:48:096:5818:26
7:36
+0:51
30K
18.64 mi12:12:372:09:536:5821:44
7:00
-0:36
20M
20.00 mi12:22:172:19:336:599:40
7:07
+0:07
21M
21.00 mi12:29:472:27:037:007:30
7:30
+0:23
35K
21.75 mi12:34:452:32:016:594:58
6:38
-0:52
23M
23.00 mi12:43:342:40:507:008:49
7:03
+0:25
24M
24.00 mi12:50:342:47:507:007:00
7:00
-0:03
40K
24.85 mi12:56:532:54:097:006:19
7:23
+0:23
25.2M
25.20 mi12:59:392:56:557:012:46
8:01
+0:38
Finish
26.22 mi13:07:023:04:187:027:23
7:15
-0:46

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

6:38 /mi

Average Pace

7:02 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:31

28% of race

Time at Steady Pace

1:30:23

49% of race

Time at Slower Pace

42:24

23% of race

Average Pace: 7:02 /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 mi10:24:1621:326:5621:32
6:56
#5792
10K
6.21 mi10:45:5443:106:5721:38
6:58
#6165
15K
9.32 mi11:06:481:04:046:5220:54
6:44
#5662
20K
12.43 mi11:27:511:25:076:5121:03
6:47
#5314
Half
13.11 mi11:32:271:29:436:514:36
6:45
#5288
25K
15.53 mi11:50:531:48:096:5818:26
7:36
#5982
30K
18.64 mi12:12:372:09:536:5821:44
7:00
#5626
20M
20.00 mi12:22:172:19:336:599:40
7:07
#5528
21M
21.00 mi12:29:472:27:037:007:30
7:30
#5433
35K
21.75 mi12:34:452:32:016:594:58
6:38
#5323
23M
23.00 mi12:43:342:40:507:008:49
7:03
#5185
24M
24.00 mi12:50:342:47:507:007:00
7:00
#5104
40K
24.85 mi12:56:532:54:097:006:19
7:23
#5083
25.2M
25.20 mi12:59:392:56:557:012:46
8:01
#5096
Finish
26.22 mi13:07:023:04:187:027:23
7:15
#5105
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5792531653164399(Top 17%)4118(Top 27%)4118(Top 183%)
10K6.21 mi3.10 mi6165-3735611-2955611-2956564(Top 25%)5902(Top 39%)5902(Top 262%)
15K9.32 mi3.11 mi5662+5035204+4075204+4074399(Top 17%)4118(Top 27%)4118(Top 183%)
20K12.43 mi3.11 mi5314+3484917+2874917+2874218(Top 16%)3949(Top 26%)3949(Top 175%)
Half13.11 mi0.68 mi5288+264894+234894+234775(Top 18%)4437(Top 29%)4437(Top 197%)
25K15.53 mi2.42 mi5982-6945469-5755469-5759536(Top 36%)7722(Top 51%)7722(Top 343%)
30K18.64 mi3.11 mi5626+3565166+3035166+3034320(Top 16%)4018(Top 26%)4018(Top 178%)
20M20.00 mi1.36 mi5528+985080+865080+864682(Top 18%)4287(Top 28%)4287(Top 190%)
21M21.00 mi1.00 mi5433+954995+854995+854578(Top 17%)4165(Top 27%)4165(Top 185%)
35K21.75 mi0.75 mi5323+1104896+994896+993263(Top 12%)3048(Top 20%)3048(Top 135%)
23M23.00 mi1.25 mi5185+1384766+1304766+1304008(Top 15%)3689(Top 24%)3689(Top 164%)
24M24.00 mi1.00 mi5104+814691+754691+754679(Top 18%)4193(Top 28%)4193(Top 186%)
40K24.85 mi0.85 mi5083+214675+164675+165962(Top 22%)4986(Top 33%)4986(Top 221%)
25.2M25.20 mi0.35 mi5096-134683-84683-86539(Top 25%)5265(Top 35%)5265(Top 234%)
Finish26.22 mi1.02 mi5105-94680+34680+36692(Top 25%)5365(Top 35%)5365(Top 238%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4399

Males

4118

M45-49

4118

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6564

Males

5902

M45-49

5902

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4399

Males

4118

M45-49

4118

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4218

Males

3949

M45-49

3949

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4775

Males

4437

M45-49

4437

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9536

Males

7722

M45-49

7722

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4320

Males

4018

M45-49

4018

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4682

Males

4287

M45-49

4287

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4578

Males

4165

M45-49

4165

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3263

Males

3048

M45-49

3048

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4008

Males

3689

M45-49

3689

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4679

Males

4193

M45-49

4193

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5962

Males

4986

M45-49

4986

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6539

Males

5265

M45-49

5265

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6692

Males

5365

M45-49

5365

Passing Analysis

Category:
Athletes Passed
2013
Passed By
1326
Net Change
+687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5792
5K → 10K60433-373#5792#6165
10K → 15K5118+503#6165#5662
15K → 20K3568+348#5662#5314
20K → Half348+26#5314#5288
Half → 25K6700-694#5288#5982
25K → 30K36913+356#5982#5626
30K → 20M1035+98#5626#5528
20M → 21M11520+95#5528#5433
21M → 35K1122+110#5433#5323
35K → 23M1479+138#5323#5185
23M → 24M9514+81#5185#5104
24M → 40K5130+21#5104#5083
40K → 25.2M1427-13#5083#5096
25.2M → Finish4049-9#5096#5105
TOTALS20131326+687
📊

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