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BOSTON MARATHON 2023

Kwang-Youn Kim

Bib: 4002•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Masters (Masters Men)
#0 / 9891
Top 7%
Division (M45-49)
#0 / 2252
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:09
Rank: #4727
Start → 5K
21:09 | 6:48/mi
10K· 6.21 mi
42:05
Rank: #4708 (+19)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:03:07
Rank: #4712 (-4)
10K → 15K
21:02 | 6:46/mi
20K· 12.43 mi
1:24:10
Rank: #4570 (+142)
15K → 20K
21:03 | 6:47/mi
Half· 13.11 mi
1:28:44
Rank: #4540 (+30)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:45:01
Rank: #4321 (+219)
Half → 25K
16:17 | 6:43/mi
30K· 18.64 mi
2:06:08
Rank: #4001 (+320)
25K → 30K
21:07 | 6:48/mi
20M
2:15:13
Rank: #3773 (+228)
30K → 20M
9:05 | 6:41/mi
21M
2:22:08
Rank: #3601 (+172)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:26:49
Rank: #3448 (+153)
21M → 35K
4:41 | 6:16/mi
23M
2:34:58
Rank: #3252 (+196)
35K → 23M
8:09 | 6:31/mi
24M
2:41:24
Rank: #3148 (+104)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:46:50
Rank: #2991 (+157)
24M → 40K
5:26 | 6:21/mi
25.2M
2:49:16
Rank: #2948 (+43)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:55:36
Rank: #2845 (+103)
25.2M → Finish
6:20 | 6:13/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:28:44
Pace6:46 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:26:52
Pace6:38 /mi
📊Negative Split: 2.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4421:096:4821:09
6:48
-
10K
6.21 mi10:44:4042:056:4620:56
6:44
-0:04
15K
9.32 mi11:05:421:03:076:4621:02
6:46
+0:02
20K
12.43 mi11:26:451:24:106:4621:03
6:47
+0:01
Half
13.11 mi11:31:191:28:446:464:34
6:42
-0:05
25K
15.53 mi11:47:361:45:016:4616:17
6:43
+0:01
30K
18.64 mi12:08:432:06:086:4621:07
6:48
+0:05
20M
20.00 mi12:17:482:15:136:469:05
6:41
-0:07
21M
21.00 mi12:24:432:22:086:466:55
6:55
+0:14
35K
21.75 mi12:29:242:26:496:454:41
6:16
-0:39
23M
23.00 mi12:37:332:34:586:448:09
6:31
+0:15
24M
24.00 mi12:43:592:41:246:446:26
6:26
-0:05
40K
24.85 mi12:49:252:46:506:435:26
6:21
-0:05
25.2M
25.20 mi12:51:512:49:166:432:26
7:03
+0:42
Finish
26.22 mi12:58:112:55:366:426:20
6:13
-0:50

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

6:13 /mi

Average Pace

6:42 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:15

95% of race

Time at Steady Pace

9:21

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:42 /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 mi10:23:4421:096:4821:09
6:48
#4727
10K
6.21 mi10:44:4042:056:4620:56
6:44
#4708
15K
9.32 mi11:05:421:03:076:4621:02
6:46
#4712
20K
12.43 mi11:26:451:24:106:4621:03
6:47
#4570
Half
13.11 mi11:31:191:28:446:464:34
6:42
#4540
25K
15.53 mi11:47:361:45:016:4616:17
6:43
#4321
30K
18.64 mi12:08:432:06:086:4621:07
6:48
#4001
20M
20.00 mi12:17:482:15:136:469:05
6:41
#3773
21M
21.00 mi12:24:432:22:086:466:55
6:55
#3601
35K
21.75 mi12:29:242:26:496:454:41
6:16
#3448
23M
23.00 mi12:37:332:34:586:448:09
6:31
#3252
24M
24.00 mi12:43:592:41:246:446:26
6:26
#3148
40K
24.85 mi12:49:252:46:506:435:26
6:21
#2991
25.2M
25.20 mi12:51:512:49:166:432:26
7:03
#2948
Finish
26.22 mi12:58:112:55:366:426:20
6:13
#2845
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4727439743974790(Top 18%)4461(Top 29%)4461(Top 198%)
10K6.21 mi3.10 mi4708+194389+84389+84687(Top 18%)4360(Top 29%)4360(Top 194%)
15K9.32 mi3.11 mi4712-44387+24387+24790(Top 18%)4461(Top 29%)4461(Top 198%)
20K12.43 mi3.11 mi4570+1424265+1224265+1224197(Top 16%)3928(Top 26%)3928(Top 174%)
Half13.11 mi0.68 mi4540+304238+274238+274167(Top 16%)3891(Top 26%)3891(Top 173%)
25K15.53 mi2.42 mi4321+2194049+1894049+1893461(Top 13%)3274(Top 22%)3274(Top 145%)
30K18.64 mi3.11 mi4001+3203765+2843765+2842957(Top 11%)2799(Top 18%)2799(Top 124%)
20M20.00 mi1.36 mi3773+2283561+2043561+2042221(Top 8%)2113(Top 14%)2113(Top 94%)
21M21.00 mi1.00 mi3601+1723405+1563405+1561837(Top 7%)1749(Top 12%)1749(Top 78%)
35K21.75 mi0.75 mi3448+1533265+1403265+1401470(Top 6%)1396(Top 9%)1396(Top 62%)
23M23.00 mi1.25 mi3252+1963081+1843081+1841473(Top 6%)1400(Top 9%)1400(Top 62%)
24M24.00 mi1.00 mi3148+1042986+952986+951830(Top 7%)1726(Top 11%)1726(Top 77%)
40K24.85 mi0.85 mi2991+1572836+1502836+1501086(Top 4%)1029(Top 7%)1029(Top 46%)
25.2M25.20 mi0.35 mi2948+432795+412795+411940(Top 7%)1823(Top 12%)1823(Top 81%)
Finish26.22 mi1.02 mi2845+1032697+982697+981338(Top 5%)1268(Top 8%)1268(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4790

Males

4461

M45-49

4461

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4687

Males

4360

M45-49

4360

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4790

Males

4461

M45-49

4461

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4197

Males

3928

M45-49

3928

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4167

Males

3891

M45-49

3891

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3461

Males

3274

M45-49

3274

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2957

Males

2799

M45-49

2799

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2221

Males

2113

M45-49

2113

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1837

Males

1749

M45-49

1749

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1470

Males

1396

M45-49

1396

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1473

Males

1400

M45-49

1400

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1830

Males

1726

M45-49

1726

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1086

Males

1029

M45-49

1029

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1940

Males

1823

M45-49

1823

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1338

Males

1268

M45-49

1268

Passing Analysis

Category:
Athletes Passed
2276
Passed By
394
Net Change
+1882
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4727
5K → 10K216197+19#4727#4708
10K → 15K112116-4#4708#4712
15K → 20K17937+142#4712#4570
20K → Half4111+30#4570#4540
Half → 25K2278+219#4540#4321
25K → 30K33010+320#4321#4001
30K → 20M2291+228#4001#3773
20M → 21M1731+172#3773#3601
21M → 35K1552+153#3601#3448
35K → 23M1982+196#3448#3252
23M → 24M1062+104#3252#3148
24M → 40K1581+157#3148#2991
40K → 25.2M452+43#2991#2948
25.2M → Finish1074+103#2948#2845
TOTALS2276394+1882
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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