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BOSTON MARATHON 2023

Chuan Yang Lee

Bib: 29099•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:23
Rank: #22853
Start → 5K
30:23 | 9:47/mi
10K· 6.21 mi
59:35
Rank: #22574 (+279)
5K → 10K
29:12 | 9:24/mi
15K· 9.32 mi
1:29:39
Rank: #22639 (-65)
10K → 15K
30:04 | 9:41/mi
20K· 12.43 mi
2:00:06
Rank: #22593 (+46)
15K → 20K
30:27 | 9:48/mi
Half· 13.11 mi
2:06:34
Rank: #22559 (+34)
20K → Half
6:28 | 9:29/mi
25K· 15.53 mi
2:30:32
Rank: #22446 (+113)
Half → 25K
23:58 | 9:53/mi
30K· 18.64 mi
3:02:21
Rank: #22303 (+143)
25K → 30K
31:49 | 10:14/mi
20M
3:17:39
Rank: #22363 (-60)
30K → 20M
15:18 | 11:16/mi
21M
3:28:40
Rank: #22264 (+99)
20M → 21M
11:01 | 11:01/mi
35K· 21.75 mi
3:36:02
Rank: #22202 (+62)
21M → 35K
7:22 | 9:51/mi
23M
3:48:56
Rank: #22122 (+80)
35K → 23M
12:54 | 10:18/mi
24M
3:58:43
Rank: #22049 (+73)
23M → 24M
9:47 | 9:47/mi
40K· 24.85 mi
4:07:22
Rank: #21989 (+60)
24M → 40K
8:39 | 10:07/mi
25.2M
4:11:03
Rank: #21958 (+31)
40K → 25.2M
3:41 | 10:41/mi
Finish· 26.22 mi
4:20:45
Rank: #21908 (+50)
25.2M → Finish
9:42 | 9:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:34
Pace9:39 /mi
2nd Half
Distance13.11 mi
Time2:14:11
Pace10:14 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2630:239:4730:23
9:47
-
10K
6.21 mi12:21:3859:359:3529:12
9:24
-0:23
15K
9.32 mi12:51:421:29:399:3730:04
9:41
+0:17
20K
12.43 mi13:22:092:00:069:4030:27
9:48
+0:07
Half
13.11 mi13:28:372:06:349:396:28
9:29
-0:19
25K
15.53 mi13:52:352:30:329:4123:58
9:53
+0:24
30K
18.64 mi14:24:243:02:219:4731:49
10:14
+0:21
20M
20.00 mi14:39:423:17:399:5315:18
11:16
+1:02
21M
21.00 mi14:50:433:28:409:5611:01
11:01
-0:15
35K
21.75 mi14:58:053:36:029:567:22
9:51
-1:10
23M
23.00 mi15:10:593:48:569:5712:54
10:18
+0:27
24M
24.00 mi15:20:463:58:439:579:47
9:47
-0:31
40K
24.85 mi15:29:254:07:229:578:39
10:07
+0:20
25.2M
25.20 mi15:33:064:11:039:583:41
10:41
+0:34
Finish
26.22 mi15:42:484:20:459:579:42
9:31
-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

9:24 /mi

Average Pace

9:57 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:50:45

88% of race

Time at Steady Pace

14:42

6% of race

Time at Slower Pace

15:18

6% of race

Average Pace: 9:57 /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 mi11:52:2630:239:4730:23
9:47
#22853
10K
6.21 mi12:21:3859:359:3529:12
9:24
#22574
15K
9.32 mi12:51:421:29:399:3730:04
9:41
#22639
20K
12.43 mi13:22:092:00:069:4030:27
9:48
#22593
Half
13.11 mi13:28:372:06:349:396:28
9:29
#22559
25K
15.53 mi13:52:352:30:329:4123:58
9:53
#22446
30K
18.64 mi14:24:243:02:219:4731:49
10:14
#22303
20M
20.00 mi14:39:423:17:399:5315:18
11:16
#22363
21M
21.00 mi14:50:433:28:409:5611:01
11:01
#22264
35K
21.75 mi14:58:053:36:029:567:22
9:51
#22202
23M
23.00 mi15:10:593:48:569:5712:54
10:18
#22122
24M
24.00 mi15:20:463:58:439:579:47
9:47
#22049
40K
24.85 mi15:29:254:07:229:578:39
10:07
#21989
25.2M
25.20 mi15:33:064:11:039:583:41
10:41
#21958
Finish
26.22 mi15:42:484:20:459:579:42
9:31
#21908
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22853135251352522735(Top 85%)13508(Top 89%)13508(Top 256%)
10K6.21 mi3.10 mi22574+27913420+10513420+10522208(Top 83%)13257(Top 87%)13257(Top 251%)
15K9.32 mi3.11 mi22639-6513458-3813458-3822735(Top 85%)13508(Top 89%)13508(Top 256%)
20K12.43 mi3.11 mi22593+4613440+1813440+1822404(Top 84%)13357(Top 88%)13357(Top 253%)
Half13.11 mi0.68 mi22559+3413415+2513415+2522045(Top 83%)13215(Top 87%)13215(Top 250%)
25K15.53 mi2.42 mi22446+11313349+6613349+6621942(Top 82%)13116(Top 86%)13116(Top 248%)
30K18.64 mi3.11 mi22303+14313275+7413275+7421633(Top 81%)12909(Top 85%)12909(Top 244%)
20M20.00 mi1.36 mi22363-6013292-1713292-1723108(Top 87%)13512(Top 89%)13512(Top 256%)
21M21.00 mi1.00 mi22264+9913235+5713235+5720862(Top 78%)12457(Top 82%)12457(Top 236%)
35K21.75 mi0.75 mi22202+6213203+3213203+3220866(Top 78%)12425(Top 82%)12425(Top 235%)
23M23.00 mi1.25 mi22122+8013161+4213161+4220829(Top 78%)12387(Top 82%)12387(Top 234%)
24M24.00 mi1.00 mi22049+7313124+3713124+3720164(Top 76%)12084(Top 80%)12084(Top 229%)
40K24.85 mi0.85 mi21989+6013087+3713087+3720277(Top 76%)12052(Top 79%)12052(Top 228%)
25.2M25.20 mi0.35 mi21958+3113061+2613061+2619640(Top 74%)11764(Top 78%)11764(Top 223%)
Finish26.22 mi1.02 mi21908+5013030+3113030+3120191(Top 76%)12060(Top 79%)12060(Top 228%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21stories
+97ft-345ft

Overall

22735

Males

13508

M18-39

13508

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

22208

Males

13257

M18-39

13257

10K→15K

6.2 - 9.3 mi

Top 85%
×3stories
+67ft-78ft

Overall

22735

Males

13508

M18-39

13508

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

22404

Males

13357

M18-39

13357

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22045

Males

13215

M18-39

13215

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21942

Males

13116

M18-39

13116

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

21633

Males

12909

M18-39

12909

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

23108

Males

13512

M18-39

13512

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20862

Males

12457

M18-39

12457

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

20866

Males

12425

M18-39

12425

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20829

Males

12387

M18-39

12387

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

20164

Males

12084

M18-39

12084

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20277

Males

12052

M18-39

12052

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19640

Males

11764

M18-39

11764

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20191

Males

12060

M18-39

12060

Passing Analysis

Category:
Athletes Passed
1633
Passed By
688
Net Change
+945
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22853
5K → 10K406127+279#22853#22574
10K → 15K116181-65#22574#22639
15K → 20K156110+46#22639#22593
20K → Half439+34#22593#22559
Half → 25K15138+113#22559#22446
25K → 30K19855+143#22446#22303
30K → 20M3898-60#22303#22363
20M → 21M11213+99#22363#22264
21M → 35K719+62#22264#22202
35K → 23M9313+80#22202#22122
23M → 24M807+73#22122#22049
24M → 40K7313+60#22049#21989
40K → 25.2M365+31#21989#21958
25.2M → Finish6010+50#21958#21908
TOTALS1633688+945
📊

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