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BOSTON MARATHON 2023

Shih-Hsien Kuo

Bib: 8475•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 32%
Masters (Masters Men)
#0 / 9891
Top 18%
Division (M40-44)
#0 / 2241
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:06
Rank: #4603
Start → 5K
21:06 | 6:47/mi
10K· 6.21 mi
42:06
Rank: #4747 (-144)
5K → 10K
21:00 | 6:46/mi
15K· 9.32 mi
1:03:11
Rank: #4790 (-43)
10K → 15K
21:05 | 6:47/mi
20K· 12.43 mi
1:24:32
Rank: #4868 (-78)
15K → 20K
21:21 | 6:52/mi
Half· 13.11 mi
1:29:12
Rank: #4909 (-41)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:46:33
Rank: #5273 (-364)
Half → 25K
17:21 | 7:09/mi
30K· 18.64 mi
2:08:52
Rank: #5279 (-6)
25K → 30K
22:19 | 7:11/mi
20M
2:19:12
Rank: #5421 (-142)
30K → 20M
10:20 | 7:36/mi
21M
2:26:43
Rank: #5329 (+92)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:32:29
Rank: #5455 (-126)
21M → 35K
5:46 | 7:42/mi
23M
2:41:35
Rank: #5377 (+78)
35K → 23M
9:06 | 7:16/mi
24M
2:49:02
Rank: #5404 (-27)
23M → 24M
7:27 | 7:27/mi
40K· 24.85 mi
2:55:12
Rank: #5331 (+73)
24M → 40K
6:10 | 7:13/mi
25.2M
2:57:52
Rank: #5307 (+24)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:05:06
Rank: #5274 (+33)
25.2M → Finish
7:14 | 7:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:12
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:35:54
Pace7:19 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:1421:066:4721:06
6:47
-
10K
6.21 mi11:07:1442:066:4721:00
6:46
-0:01
15K
9.32 mi11:28:191:03:116:4721:05
6:47
+0:01
20K
12.43 mi11:49:401:24:326:4821:21
6:52
+0:05
Half
13.11 mi11:54:201:29:126:484:40
6:50
-0:02
25K
15.53 mi12:11:411:46:336:5217:21
7:09
+0:19
30K
18.64 mi12:34:002:08:526:5522:19
7:11
+0:02
20M
20.00 mi12:44:202:19:126:5810:20
7:36
+0:25
21M
21.00 mi12:51:512:26:436:597:31
7:31
-0:05
35K
21.75 mi12:57:372:32:297:015:46
7:42
+0:11
23M
23.00 mi13:06:432:41:357:029:06
7:16
-0:26
24M
24.00 mi13:14:102:49:027:037:27
7:27
+0:11
40K
24.85 mi13:20:202:55:127:036:10
7:13
-0:14
25.2M
25.20 mi13:23:002:57:527:032:40
7:44
+0:31
Finish
26.22 mi13:30:143:05:067:047:14
7:06
-0:38

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

6:46 /mi

Average Pace

7:04 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:22

82% of race

Time at Steady Pace

33:44

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:04 /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 mi10:46:1421:066:4721:06
6:47
#4603
10K
6.21 mi11:07:1442:066:4721:00
6:46
#4747
15K
9.32 mi11:28:191:03:116:4721:05
6:47
#4790
20K
12.43 mi11:49:401:24:326:4821:21
6:52
#4868
Half
13.11 mi11:54:201:29:126:484:40
6:50
#4909
25K
15.53 mi12:11:411:46:336:5217:21
7:09
#5273
30K
18.64 mi12:34:002:08:526:5522:19
7:11
#5279
20M
20.00 mi12:44:202:19:126:5810:20
7:36
#5421
21M
21.00 mi12:51:512:26:436:597:31
7:31
#5329
35K
21.75 mi12:57:372:32:297:015:46
7:42
#5455
23M
23.00 mi13:06:432:41:357:029:06
7:16
#5377
24M
24.00 mi13:14:102:49:027:037:27
7:27
#5404
40K
24.85 mi13:20:202:55:127:036:10
7:13
#5331
25.2M
25.20 mi13:23:002:57:527:032:40
7:44
#5307
Finish
26.22 mi13:30:143:05:067:047:14
7:06
#5274
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4603429142914980(Top 19%)4624(Top 30%)4624(Top 206%)
10K6.21 mi3.10 mi4747-1444423-1324423-1324908(Top 18%)4553(Top 30%)4553(Top 203%)
15K9.32 mi3.11 mi4790-434457-344457-344980(Top 19%)4624(Top 30%)4624(Top 206%)
20K12.43 mi3.11 mi4868-784533-764533-765128(Top 19%)4743(Top 31%)4743(Top 212%)
Half13.11 mi0.68 mi4909-414567-344567-345580(Top 21%)5140(Top 34%)5140(Top 229%)
25K15.53 mi2.42 mi5273-3644884-3174884-3176402(Top 24%)5722(Top 38%)5722(Top 255%)
30K18.64 mi3.11 mi5279-64878+64878+65390(Top 20%)4912(Top 32%)4912(Top 219%)
20M20.00 mi1.36 mi5421-1424993-1154993-1157484(Top 28%)6260(Top 41%)6260(Top 279%)
21M21.00 mi1.00 mi5329+924906+874906+874664(Top 18%)4230(Top 28%)4230(Top 189%)
35K21.75 mi0.75 mi5455-1265004-985004-989918(Top 37%)7572(Top 50%)7572(Top 338%)
23M23.00 mi1.25 mi5377+784932+724932+725132(Top 19%)4559(Top 30%)4559(Top 203%)
24M24.00 mi1.00 mi5404-274946-144946-147334(Top 28%)5904(Top 39%)5904(Top 263%)
40K24.85 mi0.85 mi5331+734875+714875+714946(Top 19%)4313(Top 28%)4313(Top 192%)
25.2M25.20 mi0.35 mi5307+244850+254850+255000(Top 19%)4277(Top 28%)4277(Top 191%)
Finish26.22 mi1.02 mi5274+334822+284822+285799(Top 22%)4791(Top 32%)4791(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

4980

Males

4624

M40-44

4624

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4908

Males

4553

M40-44

4553

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

4980

Males

4624

M40-44

4624

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5128

Males

4743

M40-44

4743

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5580

Males

5140

M40-44

5140

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6402

Males

5722

M40-44

5722

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5390

Males

4912

M40-44

4912

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7484

Males

6260

M40-44

6260

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4664

Males

4230

M40-44

4230

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9918

Males

7572

M40-44

7572

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5132

Males

4559

M40-44

4559

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7334

Males

5904

M40-44

5904

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

4946

Males

4313

M40-44

4313

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5000

Males

4277

M40-44

4277

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2stories
+22ft-21ft

Overall

5799

Males

4791

M40-44

4791

Passing Analysis

Category:
Athletes Passed
975
Passed By
1646
Net Change
-671
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4603
5K → 10K149293-144#4603#4747
10K → 15K97140-43#4747#4790
15K → 20K75153-78#4790#4868
20K → Half748-41#4868#4909
Half → 25K37401-364#4909#5273
25K → 30K130136-6#5273#5279
30K → 20M31173-142#5279#5421
20M → 21M11119+92#5421#5329
21M → 35K7133-126#5329#5455
35K → 23M10527+78#5455#5377
23M → 24M4370-27#5377#5404
24M → 40K8411+73#5404#5331
40K → 25.2M3511+24#5331#5307
25.2M → Finish6431+33#5307#5274
TOTALS9751646-671
📊

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