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BOSTON MARATHON 2023

Michael Choi

Bib: 9361•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M40-44)
#0 / 2241
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:50
Rank: #8431
Start → 5K
22:50 | 7:21/mi
10K· 6.21 mi
44:57
Rank: #7979 (+452)
5K → 10K
22:07 | 7:07/mi
15K· 9.32 mi
1:06:21
Rank: #7224 (+755)
10K → 15K
21:24 | 6:53/mi
20K· 12.43 mi
1:27:15
Rank: #6467 (+757)
15K → 20K
20:54 | 6:44/mi
Half· 13.11 mi
1:31:47
Rank: #6373 (+94)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:48:13
Rank: #6008 (+365)
Half → 25K
16:26 | 6:47/mi
30K· 18.64 mi
2:09:47
Rank: #5594 (+414)
25K → 30K
21:34 | 6:56/mi
20M
2:19:13
Rank: #5424 (+170)
30K → 20M
9:26 | 6:57/mi
21M
2:26:22
Rank: #5212 (+212)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:31:22
Rank: #5130 (+82)
21M → 35K
5:00 | 6:41/mi
23M
2:39:51
Rank: #4915 (+215)
35K → 23M
8:29 | 6:47/mi
24M
2:46:21
Rank: #4750 (+165)
23M → 24M
6:30 | 6:30/mi
40K· 24.85 mi
2:52:01
Rank: #4602 (+148)
24M → 40K
5:40 | 6:38/mi
25.2M
2:54:26
Rank: #4543 (+59)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
3:01:07
Rank: #4443 (+100)
25.2M → Finish
6:41 | 6:34/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:31:47
Pace7:00 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:29:20
Pace6:49 /mi
📊Negative Split: 2.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4422:507:2122:50
7:21
-
10K
6.21 mi11:10:5144:577:1422:07
7:07
-0:14
15K
9.32 mi11:32:151:06:217:0721:24
6:53
-0:14
20K
12.43 mi11:53:091:27:157:0120:54
6:44
-0:09
Half
13.11 mi11:57:411:31:477:004:32
6:39
-0:05
25K
15.53 mi12:14:071:48:136:5816:26
6:47
+0:08
30K
18.64 mi12:35:412:09:476:5821:34
6:56
+0:09
20M
20.00 mi12:45:072:19:136:589:26
6:57
+0:01
21M
21.00 mi12:52:162:26:226:587:09
7:09
+0:12
35K
21.75 mi12:57:162:31:226:585:00
6:41
-0:28
23M
23.00 mi13:05:452:39:516:578:29
6:47
+0:06
24M
24.00 mi13:12:152:46:216:566:30
6:30
-0:17
40K
24.85 mi13:17:552:52:016:555:40
6:38
+0:08
25.2M
25.20 mi13:20:202:54:266:552:25
7:00
+0:22
Finish
26.22 mi13:27:013:01:076:556:41
6:34
-0:26

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

6:30 /mi

Average Pace

6:55 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:08

83% of race

Time at Steady Pace

29:59

17% 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 mi10:48:4422:507:2122:50
7:21
#8431
10K
6.21 mi11:10:5144:577:1422:07
7:07
#7979
15K
9.32 mi11:32:151:06:217:0721:24
6:53
#7224
20K
12.43 mi11:53:091:27:157:0120:54
6:44
#6467
Half
13.11 mi11:57:411:31:477:004:32
6:39
#6373
25K
15.53 mi12:14:071:48:136:5816:26
6:47
#6008
30K
18.64 mi12:35:412:09:476:5821:34
6:56
#5594
20M
20.00 mi12:45:072:19:136:589:26
6:57
#5424
21M
21.00 mi12:52:162:26:226:587:09
7:09
#5212
35K
21.75 mi12:57:162:31:226:585:00
6:41
#5130
23M
23.00 mi13:05:452:39:516:578:29
6:47
#4915
24M
24.00 mi13:12:152:46:216:566:30
6:30
#4750
40K
24.85 mi13:17:552:52:016:555:40
6:38
#4602
25.2M
25.20 mi13:20:202:54:266:552:25
7:00
#4543
Finish
26.22 mi13:27:013:01:076:556:41
6:34
#4443
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi8431725072505860(Top 22%)5348(Top 35%)5348(Top 239%)
10K6.21 mi3.10 mi7979+4526954+2966954+2967548(Top 28%)6634(Top 44%)6634(Top 296%)
15K9.32 mi3.11 mi7224+7556413+5416413+5415860(Top 22%)5348(Top 35%)5348(Top 239%)
20K12.43 mi3.11 mi6467+7575837+5765837+5763783(Top 14%)3571(Top 24%)3571(Top 159%)
Half13.11 mi0.68 mi6373+945759+785759+783847(Top 14%)3631(Top 24%)3631(Top 162%)
25K15.53 mi2.42 mi6008+3655488+2715488+2713955(Top 15%)3716(Top 24%)3716(Top 166%)
30K18.64 mi3.11 mi5594+4145140+3485140+3483949(Top 15%)3692(Top 24%)3692(Top 165%)
20M20.00 mi1.36 mi5424+1704995+1454995+1453683(Top 14%)3435(Top 23%)3435(Top 153%)
21M21.00 mi1.00 mi5212+2124808+1874808+1872872(Top 11%)2697(Top 18%)2697(Top 120%)
35K21.75 mi0.75 mi5130+824731+774731+773492(Top 13%)3244(Top 21%)3244(Top 145%)
23M23.00 mi1.25 mi4915+2154548+1834548+1832541(Top 10%)2387(Top 16%)2387(Top 107%)
24M24.00 mi1.00 mi4750+1654411+1374411+1372123(Top 8%)1993(Top 13%)1993(Top 89%)
40K24.85 mi0.85 mi4602+1484280+1314280+1312057(Top 8%)1927(Top 13%)1927(Top 86%)
25.2M25.20 mi0.35 mi4543+594227+534227+531822(Top 7%)1715(Top 11%)1715(Top 77%)
Finish26.22 mi1.02 mi4443+1004138+894138+892777(Top 10%)2535(Top 17%)2535(Top 113%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

5860

Males

5348

M40-44

5348

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7548

Males

6634

M40-44

6634

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

5860

Males

5348

M40-44

5348

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3783

Males

3571

M40-44

3571

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3847

Males

3631

M40-44

3631

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3955

Males

3716

M40-44

3716

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

3949

Males

3692

M40-44

3692

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3683

Males

3435

M40-44

3435

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2872

Males

2697

M40-44

2697

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3492

Males

3244

M40-44

3244

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2541

Males

2387

M40-44

2387

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2123

Males

1993

M40-44

1993

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2057

Males

1927

M40-44

1927

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1822

Males

1715

M40-44

1715

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2777

Males

2535

M40-44

2535

Passing Analysis

Category:
Athletes Passed
4099
Passed By
111
Net Change
+3988
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8431
5K → 10K53583+452#8431#7979
10K → 15K7594+755#7979#7224
15K → 20K7570+757#7224#6467
20K → Half940+94#6467#6373
Half → 25K3650+365#6373#6008
25K → 30K4184+414#6008#5594
30K → 20M1733+170#5594#5424
20M → 21M2131+212#5424#5212
21M → 35K875+82#5212#5130
35K → 23M2161+215#5130#4915
23M → 24M1661+165#4915#4750
24M → 40K1502+148#4750#4602
40K → 25.2M590+59#4602#4543
25.2M → Finish1077+100#4543#4443
TOTALS4099111+3988
📊

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