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BOSTON MARATHON 2023

Andrew Cho

Bib: 3407•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 23%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M40-44)
#0 / 2241
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:37
Rank: #3132
Start → 5K
20:37 | 6:38/mi
10K· 6.21 mi
41:11
Rank: #3376 (-244)
5K → 10K
20:34 | 6:37/mi
15K· 9.32 mi
1:01:57
Rank: #3528 (-152)
10K → 15K
20:46 | 6:41/mi
20K· 12.43 mi
1:23:01
Rank: #3689 (-161)
15K → 20K
21:04 | 6:47/mi
Half· 13.11 mi
1:27:35
Rank: #3712 (-23)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:11
Rank: #3841 (-129)
Half → 25K
16:36 | 6:51/mi
30K· 18.64 mi
2:06:17
Rank: #4073 (-232)
25K → 30K
22:06 | 7:07/mi
20M
2:15:50
Rank: #4067 (+6)
30K → 20M
9:33 | 7:02/mi
21M
2:23:29
Rank: #4162 (-95)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:28:33
Rank: #4148 (+14)
21M → 35K
5:04 | 6:46/mi
23M
2:37:21
Rank: #4124 (+24)
35K → 23M
8:48 | 7:02/mi
24M
2:44:04
Rank: #4052 (+72)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:49:46
Rank: #3951 (+101)
24M → 40K
5:42 | 6:40/mi
25.2M
2:52:16
Rank: #3905 (+46)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:58:46
Rank: #3767 (+138)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:35
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:31:11
Pace6:57 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0420:376:3820:37
6:38
-
10K
6.21 mi10:42:3841:116:3820:34
6:37
-0:01
15K
9.32 mi11:03:241:01:576:3920:46
6:41
+0:04
20K
12.43 mi11:24:281:23:016:4121:04
6:47
+0:06
Half
13.11 mi11:29:021:27:356:414:34
6:42
-0:05
25K
15.53 mi11:45:381:44:116:4216:36
6:51
+0:09
30K
18.64 mi12:07:442:06:176:4622:06
7:07
+0:16
20M
20.00 mi12:17:172:15:506:479:33
7:02
-0:05
21M
21.00 mi12:24:562:23:296:507:39
7:39
+0:37
35K
21.75 mi12:30:002:28:336:505:04
6:46
-0:53
23M
23.00 mi12:38:482:37:216:508:48
7:02
+0:16
24M
24.00 mi12:45:312:44:046:506:43
6:43
-0:19
40K
24.85 mi12:51:132:49:466:505:42
6:40
-0:03
25.2M
25.20 mi12:53:432:52:166:502:30
7:15
+0:35
Finish
26.22 mi13:00:132:58:466:496:30
6:23
-0:52

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

6:23 /mi

Average Pace

6:49 /mi

Slowest Pace

7:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:10

72% of race

Time at Steady Pace

42:57

24% of race

Time at Slower Pace

7:39

4% of race

Average Pace: 6:49 /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 mi10:22:0420:376:3820:37
6:38
#3132
10K
6.21 mi10:42:3841:116:3820:34
6:37
#3376
15K
9.32 mi11:03:241:01:576:3920:46
6:41
#3528
20K
12.43 mi11:24:281:23:016:4121:04
6:47
#3689
Half
13.11 mi11:29:021:27:356:414:34
6:42
#3712
25K
15.53 mi11:45:381:44:116:4216:36
6:51
#3841
30K
18.64 mi12:07:442:06:176:4622:06
7:07
#4073
20M
20.00 mi12:17:172:15:506:479:33
7:02
#4067
21M
21.00 mi12:24:562:23:296:507:39
7:39
#4162
35K
21.75 mi12:30:002:28:336:505:04
6:46
#4148
23M
23.00 mi12:38:482:37:216:508:48
7:02
#4124
24M
24.00 mi12:45:312:44:046:506:43
6:43
#4052
40K
24.85 mi12:51:132:49:466:505:42
6:40
#3951
25.2M
25.20 mi12:53:432:52:166:502:30
7:15
#3905
Finish
26.22 mi13:00:132:58:466:496:30
6:23
#3767
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3132296029603978(Top 15%)3739(Top 25%)3739(Top 167%)
10K6.21 mi3.10 mi3376-2443195-2353195-2353641(Top 14%)3438(Top 23%)3438(Top 153%)
15K9.32 mi3.11 mi3528-1523338-1433338-1433978(Top 15%)3739(Top 25%)3739(Top 167%)
20K12.43 mi3.11 mi3689-1613490-1523490-1524247(Top 16%)3975(Top 26%)3975(Top 177%)
Half13.11 mi0.68 mi3712-233509-193509-194232(Top 16%)3956(Top 26%)3956(Top 177%)
25K15.53 mi2.42 mi3841-1293626-1173626-1174525(Top 17%)4212(Top 28%)4212(Top 188%)
30K18.64 mi3.11 mi4073-2323829-2033829-2034995(Top 19%)4588(Top 30%)4588(Top 205%)
20M20.00 mi1.36 mi4067+63820+93820+94174(Top 16%)3853(Top 25%)3853(Top 172%)
21M21.00 mi1.00 mi4162-953899-793899-795327(Top 20%)4699(Top 31%)4699(Top 210%)
35K21.75 mi0.75 mi4148+143883+163883+163992(Top 15%)3667(Top 24%)3667(Top 164%)
23M23.00 mi1.25 mi4124+243862+213862+213918(Top 15%)3607(Top 24%)3607(Top 161%)
24M24.00 mi1.00 mi4052+723795+673795+673209(Top 12%)2975(Top 20%)2975(Top 133%)
40K24.85 mi0.85 mi3951+1013698+973698+972214(Top 8%)2065(Top 14%)2065(Top 92%)
25.2M25.20 mi0.35 mi3905+463659+393659+392738(Top 10%)2524(Top 17%)2524(Top 113%)
Finish26.22 mi1.02 mi3767+1383537+1223537+1221945(Top 7%)1816(Top 12%)1816(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3978

Males

3739

M40-44

3739

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3641

Males

3438

M40-44

3438

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3978

Males

3739

M40-44

3739

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4247

Males

3975

M40-44

3975

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4232

Males

3956

M40-44

3956

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4525

Males

4212

M40-44

4212

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

4995

Males

4588

M40-44

4588

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4174

Males

3853

M40-44

3853

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5327

Males

4699

M40-44

4699

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

3992

Males

3667

M40-44

3667

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3918

Males

3607

M40-44

3607

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3209

Males

2975

M40-44

2975

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2214

Males

2065

M40-44

2065

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2738

Males

2524

M40-44

2524

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1945

Males

1816

M40-44

1816

Passing Analysis

Category:
Athletes Passed
896
Passed By
1531
Net Change
-635
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3132
5K → 10K81325-244#3132#3376
10K → 15K53205-152#3376#3528
15K → 20K43204-161#3528#3689
20K → Half629-23#3689#3712
Half → 25K49178-129#3712#3841
25K → 30K56288-232#3841#4073
30K → 20M5650+6#4073#4067
20M → 21M46141-95#4067#4162
21M → 35K3824+14#4162#4148
35K → 23M6844+24#4148#4124
23M → 24M9624+72#4124#4052
24M → 40K1109+101#4052#3951
40K → 25.2M515+46#3951#3905
25.2M → Finish1435+138#3905#3767
TOTALS8961531-635
📊

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