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BOSTON MARATHON 2023

Chin-Chung Liao

Bib: 18228•M

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
24:33
Rank: #13252
Start → 5K
7:54/mi
24:33 split
10K· 6.21 mi
48:27
Rank: #12681 (+571)
5K → 10K
7:42/mi
23:54 split
15K· 9.32 mi
1:12:48
Rank: #12784 (-103)
10K → 15K
7:50/mi
24:21 split
20K· 12.43 mi
1:38:24
Rank: #13455 (-671)
15K → 20K
8:14/mi
25:36 split
Half· 13.11 mi
1:44:02
Rank: #13595 (-140)
20K → Half
8:15/mi
5:38 split
25K· 15.53 mi
2:04:37
Rank: #14036 (-441)
Half → 25K
8:29/mi
20:35 split
30K· 18.64 mi
2:32:53
Rank: #14822 (-786)
25K → 30K
9:06/mi
28:16 split
20M
2:46:32
Rank: #15424 (-602)
30K → 20M
10:03/mi
13:39 split
21M
2:57:27
Rank: #15864 (-440)
20M → 21M
10:55/mi
10:55 split
35K· 21.75 mi
3:04:30
Rank: #16034 (-170)
21M → 35K
9:25/mi
7:03 split
23M
3:17:15
Rank: #16429 (-395)
35K → 23M
10:11/mi
12:45 split
24M
3:26:56
Rank: #16635 (-206)
23M → 24M
9:41/mi
9:41 split
40K· 24.85 mi
3:35:43
Rank: #16870 (-235)
24M → 40K
10:16/mi
8:47 split
25.2M
3:39:50
Rank: #17047 (-177)
40K → 25.2M
11:56/mi
4:07 split
Finish· 26.22 mi
3:50:48
Rank: #17522 (-475)
25.2M → Finish
10:46/mi
10:58 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:02
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time2:06:46
Pace9:40 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2824:337:5424:33
7:54
-
10K
6.21 mi11:39:2248:277:4823:54
7:42
-0:12
15K
9.32 mi12:03:431:12:487:4924:21
7:50
+0:08
20K
12.43 mi12:29:191:38:247:5525:36
8:14
+0:24
Half
13.11 mi12:34:571:44:027:565:38
8:15
+0:01
25K
15.53 mi12:55:322:04:378:0120:35
8:29
+0:14
30K
18.64 mi13:23:482:32:538:1228:16
9:06
+0:37
20M
20.00 mi13:37:272:46:328:2013:39
10:03
+0:57
21M
21.00 mi13:48:222:57:278:2710:55
10:55
+0:52
35K
21.75 mi13:55:253:04:308:297:03
9:25
-1:30
23M
23.00 mi14:08:103:17:158:3512:45
10:11
+0:46
24M
24.00 mi14:17:513:26:568:379:41
9:41
-0:30
40K
24.85 mi14:26:383:35:438:418:47
10:16
+0:35
25.2M
25.20 mi14:30:453:39:508:434:07
11:56
+1:40
Finish
26.22 mi14:41:433:50:488:4910:58
10:46
-1:10

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

7:42 /mi

Average Pace

8:49 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:37

54% of race

Time at Steady Pace

45:00

19% of race

Time at Slower Pace

1:01:11

27% of race

Average Pace: 8:48 /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 mi11:15:2824:337:5424:33
7:54
#13252
10K
6.21 mi11:39:2248:277:4823:54
7:42
#12681
15K
9.32 mi12:03:431:12:487:4924:21
7:50
#12784
20K
12.43 mi12:29:191:38:247:5525:36
8:14
#13455
Half
13.11 mi12:34:571:44:027:565:38
8:15
#13595
25K
15.53 mi12:55:322:04:378:0120:35
8:29
#14036
30K
18.64 mi13:23:482:32:538:1228:16
9:06
#14822
20M
20.00 mi13:37:272:46:328:2013:39
10:03
#15424
21M
21.00 mi13:48:222:57:278:2710:55
10:55
#15864
35K
21.75 mi13:55:253:04:308:297:03
9:25
#16034
23M
23.00 mi14:08:103:17:158:3512:45
10:11
#16429
24M
24.00 mi14:17:513:26:568:379:41
9:41
#16635
40K
24.85 mi14:26:383:35:438:418:47
10:16
#16870
25.2M
25.20 mi14:30:453:39:508:434:07
11:56
#17047
Finish
26.22 mi14:41:433:50:488:4910:58
10:46
#17522
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi132529658965813027(Top 49%)9521(Top 63%)9521(Top 858%)
10K6.21 mi3.10 mi12681+5719409+2499409+24912161(Top 46%)9186(Top 61%)9186(Top 828%)
15K9.32 mi3.11 mi12784-1039441-329441-3213027(Top 49%)9521(Top 63%)9521(Top 858%)
20K12.43 mi3.11 mi13455-6719685-2449685-24415201(Top 57%)10349(Top 68%)10349(Top 932%)
Half13.11 mi0.68 mi13595-1409740-559740-5516176(Top 61%)10761(Top 71%)10761(Top 969%)
25K15.53 mi2.42 mi14036-4419887-1479887-14716123(Top 61%)10592(Top 70%)10592(Top 954%)
30K18.64 mi3.11 mi14822-78610170-28310170-28317672(Top 66%)11201(Top 74%)11201(Top 1009%)
20M20.00 mi1.36 mi15424-60210358-18810358-18820585(Top 77%)12382(Top 82%)12382(Top 1115%)
21M21.00 mi1.00 mi15864-44010512-15410512-15420629(Top 77%)12350(Top 81%)12350(Top 1113%)
35K21.75 mi0.75 mi16034-17010559-4710559-4719602(Top 74%)11864(Top 78%)11864(Top 1069%)
23M23.00 mi1.25 mi16429-39510720-16110720-16120508(Top 77%)12249(Top 81%)12249(Top 1104%)
24M24.00 mi1.00 mi16635-20610789-6910789-6919816(Top 74%)11915(Top 79%)11915(Top 1073%)
40K24.85 mi0.85 mi16870-23510866-7710866-7720653(Top 78%)12210(Top 80%)12210(Top 1100%)
25.2M25.20 mi0.35 mi17047-17710938-7210938-7222347(Top 84%)13004(Top 86%)13004(Top 1172%)
Finish26.22 mi1.02 mi17522-47511128-19011128-19023519(Top 88%)13577(Top 89%)13577(Top 1223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13027

Males

9521

M60-64

9521

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12161

Males

9186

M60-64

9186

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13027

Males

9521

M60-64

9521

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15201

Males

10349

M60-64

10349

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16176

Males

10761

M60-64

10761

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16123

Males

10592

M60-64

10592

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

17672

Males

11201

M60-64

11201

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20585

Males

12382

M60-64

12382

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20629

Males

12350

M60-64

12350

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19602

Males

11864

M60-64

11864

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

20508

Males

12249

M60-64

12249

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19816

Males

11915

M60-64

11915

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20653

Males

12210

M60-64

12210

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22347

Males

13004

M60-64

13004

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23519

Males

13577

M60-64

13577

Passing Analysis

Category:
Athletes Passed
1109
Passed By
5379
Net Change
-4270
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13252
5K → 10K698127+571#13252#12681
10K → 15K159262-103#12681#12784
15K → 20K54725-671#12784#13455
20K → Half7147-140#13455#13595
Half → 25K41482-441#13595#14036
25K → 30K42828-786#14036#14822
30K → 20M15617-602#14822#15424
20M → 21M12452-440#15424#15864
21M → 35K26196-170#15864#16034
35K → 23M13408-395#16034#16429
23M → 24M22228-206#16429#16635
24M → 40K13248-235#16635#16870
40K → 25.2M0177-177#16870#17047
25.2M → Finish7482-475#17047#17522
TOTALS11095379-4270
📊

Passing Visuals

Category:
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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