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BOSTON MARATHON 2023

Chul Cha

Bib: 22487•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:09
Rank: #21766
Start → 5K
29:09 | 9:23/mi
10K· 6.21 mi
58:35
Rank: #22138 (-372)
5K → 10K
29:26 | 9:28/mi
15K· 9.32 mi
1:29:04
Rank: #22474 (-336)
10K → 15K
30:29 | 9:49/mi
20K· 12.43 mi
1:59:50
Rank: #22524 (-50)
15K → 20K
30:46 | 9:54/mi
Half· 13.11 mi
2:06:52
Rank: #22622 (-98)
20K → Half
7:02 | 10:19/mi
25K· 15.53 mi
2:31:35
Rank: #22607 (+15)
Half → 25K
24:43 | 10:12/mi
30K· 18.64 mi
3:05:15
Rank: #22655 (-48)
25K → 30K
33:40 | 10:50/mi
20M
3:21:21
Rank: #22771 (-116)
30K → 20M
16:06 | 11:51/mi
21M
3:33:34
Rank: #22814 (-43)
20M → 21M
12:13 | 12:13/mi
35K· 21.75 mi
3:41:18
Rank: #22779 (+35)
21M → 35K
7:44 | 10:20/mi
23M
3:54:55
Rank: #22736 (+43)
35K → 23M
13:37 | 10:53/mi
24M
4:06:27
Rank: #22792 (-56)
23M → 24M
11:32 | 11:32/mi
40K· 24.85 mi
4:16:23
Rank: #22814 (-22)
24M → 40K
9:56 | 11:37/mi
25.2M
4:20:22
Rank: #22803 (+11)
40K → 25.2M
3:59 | 11:33/mi
Finish· 26.22 mi
4:30:16
Rank: #22753 (+50)
25.2M → Finish
9:54 | 9:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:52
Pace9:41 /mi
2nd Half
Distance13.11 mi
Time2:23:24
Pace10:56 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2729:099:2329:09
9:23
-
10K
6.21 mi11:52:5358:359:2629:26
9:28
+0:05
15K
9.32 mi12:23:221:29:049:3330:29
9:49
+0:21
20K
12.43 mi12:54:081:59:509:3930:46
9:54
+0:05
Half
13.11 mi13:01:102:06:529:417:02
10:19
+0:25
25K
15.53 mi13:25:532:31:359:4524:43
10:12
-0:07
30K
18.64 mi13:59:333:05:159:5633:40
10:50
+0:38
20M
20.00 mi14:15:393:21:2110:0416:06
11:51
+1:01
21M
21.00 mi14:27:523:33:3410:1012:13
12:13
+0:22
35K
21.75 mi14:35:363:41:1810:117:44
10:20
-1:53
23M
23.00 mi14:49:133:54:5510:1313:37
10:53
+0:33
24M
24.00 mi15:00:454:06:2710:1611:32
11:32
+0:39
40K
24.85 mi15:10:414:16:2310:199:56
11:37
+0:05
25.2M
25.20 mi15:14:404:20:2210:203:59
11:33
-0:04
Finish
26.22 mi15:24:344:30:1610:199:54
9:43
-1:50

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

9:23 /mi

Average Pace

10:19 /mi

Slowest Pace

12:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:58

37% of race

Time at Steady Pace

1:10:15

26% of race

Time at Slower Pace

1:41:03

37% of race

Average Pace: 10:18 /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 mi11:23:2729:099:2329:09
9:23
#21766
10K
6.21 mi11:52:5358:359:2629:26
9:28
#22138
15K
9.32 mi12:23:221:29:049:3330:29
9:49
#22474
20K
12.43 mi12:54:081:59:509:3930:46
9:54
#22524
Half
13.11 mi13:01:102:06:529:417:02
10:19
#22622
25K
15.53 mi13:25:532:31:359:4524:43
10:12
#22607
30K
18.64 mi13:59:333:05:159:5633:40
10:50
#22655
20M
20.00 mi14:15:393:21:2110:0416:06
11:51
#22771
21M
21.00 mi14:27:523:33:3410:1012:13
12:13
#22814
35K
21.75 mi14:35:363:41:1810:117:44
10:20
#22779
23M
23.00 mi14:49:133:54:5510:1313:37
10:53
#22736
24M
24.00 mi15:00:454:06:2710:1611:32
11:32
#22792
40K
24.85 mi15:10:414:16:2310:199:56
11:37
#22814
25.2M
25.20 mi15:14:404:20:2210:203:59
11:33
#22803
Finish
26.22 mi15:24:344:30:1610:199:54
9:43
#22753
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi21766129731297323070(Top 87%)13665(Top 90%)13665(Top 1231%)
10K6.21 mi3.10 mi22138-37213193-22013193-22022441(Top 84%)13367(Top 88%)13367(Top 1204%)
15K9.32 mi3.11 mi22474-33613374-18113374-18123070(Top 87%)13665(Top 90%)13665(Top 1231%)
20K12.43 mi3.11 mi22524-5013398-2413398-2422647(Top 85%)13465(Top 89%)13465(Top 1213%)
Half13.11 mi0.68 mi22622-9813450-5213450-5223851(Top 90%)13991(Top 92%)13991(Top 1260%)
25K15.53 mi2.42 mi22607+1513432+1813432+1822600(Top 85%)13404(Top 88%)13404(Top 1208%)
30K18.64 mi3.11 mi22655-4813423+913423+922855(Top 86%)13450(Top 89%)13450(Top 1212%)
20M20.00 mi1.36 mi22771-11613477-5413477-5423996(Top 90%)13891(Top 92%)13891(Top 1251%)
21M21.00 mi1.00 mi22814-4313483-613483-623066(Top 87%)13457(Top 89%)13457(Top 1212%)
35K21.75 mi0.75 mi22779+3513456+2713456+2722070(Top 83%)12958(Top 85%)12958(Top 1167%)
23M23.00 mi1.25 mi22736+4313426+3013426+3022104(Top 83%)12962(Top 85%)12962(Top 1168%)
24M24.00 mi1.00 mi22792-5613442-1613442-1623916(Top 90%)13772(Top 91%)13772(Top 1241%)
40K24.85 mi0.85 mi22814-2213449-713449-723379(Top 88%)13489(Top 89%)13489(Top 1215%)
25.2M25.20 mi0.35 mi22803+1113443+613443+621654(Top 81%)12699(Top 84%)12699(Top 1144%)
Finish26.22 mi1.02 mi22753+5013416+2713416+2720850(Top 78%)12349(Top 81%)12349(Top 1113%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23070

Males

13665

M60-64

13665

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22441

Males

13367

M60-64

13367

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23070

Males

13665

M60-64

13665

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22647

Males

13465

M60-64

13465

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

23851

Males

13991

M60-64

13991

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22600

Males

13404

M60-64

13404

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22855

Males

13450

M60-64

13450

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

23996

Males

13891

M60-64

13891

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23066

Males

13457

M60-64

13457

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

22070

Males

12958

M60-64

12958

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22104

Males

12962

M60-64

12962

23M→24M

23.0 - 24.0 mi

Top 90%
×6stories
+12ft-82ft

Overall

23916

Males

13772

M60-64

13772

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23379

Males

13489

M60-64

13489

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21654

Males

12699

M60-64

12699

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20850

Males

12349

M60-64

12349

Passing Analysis

Category:
Athletes Passed
807
Passed By
1794
Net Change
-987
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21766
5K → 10K110482-372#21766#22138
10K → 15K65401-336#22138#22474
15K → 20K117167-50#22474#22524
20K → Half6104-98#22524#22622
Half → 25K10691+15#22622#22607
25K → 30K100148-48#22607#22655
30K → 20M30146-116#22655#22771
20M → 21M3073-43#22771#22814
21M → 35K5419+35#22814#22779
35K → 23M6522+43#22779#22736
23M → 24M2379-56#22736#22792
24M → 40K2244-22#22792#22814
40K → 25.2M209+11#22814#22803
25.2M → Finish599+50#22803#22753
TOTALS8071794-987
📊

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