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BOSTON MARATHON 2023

Chao-Yu Lin

Bib: 12425•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 44%
Division (M50-54)
#0 / 2052
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:25
Rank: #9953
Start → 5K
23:25 | 7:32/mi
10K· 6.21 mi
46:16
Rank: #9547 (+406)
5K → 10K
22:51 | 7:21/mi
15K· 9.32 mi
1:09:17
Rank: #9455 (+92)
10K → 15K
23:01 | 7:25/mi
20K· 12.43 mi
1:33:04
Rank: #9722 (-267)
15K → 20K
23:47 | 7:39/mi
Half· 13.11 mi
1:38:16
Rank: #9811 (-89)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
1:57:10
Rank: #9992 (-181)
Half → 25K
18:54 | 7:48/mi
30K· 18.64 mi
2:22:34
Rank: #10343 (-351)
25K → 30K
25:24 | 8:11/mi
20M
2:34:17
Rank: #10681 (-338)
30K → 20M
11:43 | 8:38/mi
21M
2:42:55
Rank: #10674 (+7)
20M → 21M
8:38 | 8:38/mi
35K· 21.75 mi
2:49:01
Rank: #10755 (-81)
21M → 35K
6:06 | 8:09/mi
23M
2:59:10
Rank: #10720 (+35)
35K → 23M
10:09 | 8:06/mi
24M
3:06:59
Rank: #10673 (+47)
23M → 24M
7:49 | 7:49/mi
40K· 24.85 mi
3:13:46
Rank: #10595 (+78)
24M → 40K
6:47 | 7:56/mi
25.2M
3:16:40
Rank: #10553 (+42)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:25:01
Rank: #10648 (-95)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:16
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:46:45
Pace8:09 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5723:257:3223:25
7:32
-
10K
6.21 mi11:13:4846:167:2722:51
7:21
-0:11
15K
9.32 mi11:36:491:09:177:2623:01
7:25
+0:04
20K
12.43 mi12:00:361:33:047:2923:47
7:39
+0:14
Half
13.11 mi12:05:481:38:167:305:12
7:37
-0:02
25K
15.53 mi12:24:421:57:107:3318:54
7:48
+0:11
30K
18.64 mi12:50:062:22:347:3925:24
8:11
+0:23
20M
20.00 mi13:01:492:34:177:4311:43
8:38
+0:27
21M
21.00 mi13:10:272:42:557:458:38
8:38
0:00
35K
21.75 mi13:16:332:49:017:466:06
8:09
-0:29
23M
23.00 mi13:26:422:59:107:4710:09
8:06
-0:03
24M
24.00 mi13:34:313:06:597:477:49
7:49
-0:17
40K
24.85 mi13:41:183:13:467:486:47
7:56
+0:07
25.2M
25.20 mi13:44:123:16:407:482:54
8:25
+0:29
Finish
26.22 mi13:52:333:25:017:508:21
8:12
-0:13

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

7:21 /mi

Average Pace

7:50 /mi

Slowest Pace

8:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:46

64% of race

Time at Steady Pace

1:13:15

36% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi10:50:5723:257:3223:25
7:32
#9953
10K
6.21 mi11:13:4846:167:2722:51
7:21
#9547
15K
9.32 mi11:36:491:09:177:2623:01
7:25
#9455
20K
12.43 mi12:00:361:33:047:2923:47
7:39
#9722
Half
13.11 mi12:05:481:38:167:305:12
7:37
#9811
25K
15.53 mi12:24:421:57:107:3318:54
7:48
#9992
30K
18.64 mi12:50:062:22:347:3925:24
8:11
#10343
20M
20.00 mi13:01:492:34:177:4311:43
8:38
#10681
21M
21.00 mi13:10:272:42:557:458:38
8:38
#10674
35K
21.75 mi13:16:332:49:017:466:06
8:09
#10755
23M
23.00 mi13:26:422:59:107:4710:09
8:06
#10720
24M
24.00 mi13:34:313:06:597:477:49
7:49
#10673
40K
24.85 mi13:41:183:13:467:486:47
7:56
#10595
25.2M
25.20 mi13:44:123:16:407:482:54
8:25
#10553
Finish
26.22 mi13:52:333:25:017:508:21
8:12
#10648
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9953810581059405(Top 35%)7809(Top 51%)7809(Top 381%)
10K6.21 mi3.10 mi9547+4067905+2007905+2009265(Top 35%)7729(Top 51%)7729(Top 377%)
15K9.32 mi3.11 mi9455+927845+607845+609405(Top 35%)7809(Top 51%)7809(Top 381%)
20K12.43 mi3.11 mi9722-2677995-1507995-15010550(Top 40%)8364(Top 55%)8364(Top 408%)
Half13.11 mi0.68 mi9811-898040-458040-4511147(Top 42%)8679(Top 57%)8679(Top 423%)
25K15.53 mi2.42 mi9992-1818124-848124-8411044(Top 41%)8524(Top 56%)8524(Top 415%)
30K18.64 mi3.11 mi10343-3518257-1338257-13312151(Top 46%)8860(Top 58%)8860(Top 432%)
20M20.00 mi1.36 mi10681-3388391-1348391-13414453(Top 54%)9749(Top 64%)9749(Top 475%)
21M21.00 mi1.00 mi10674+78370+218370+2111215(Top 42%)8206(Top 54%)8206(Top 400%)
35K21.75 mi0.75 mi10755-818385-158385-1513094(Top 49%)9009(Top 59%)9009(Top 439%)
23M23.00 mi1.25 mi10720+358335+508335+5010498(Top 39%)7720(Top 51%)7720(Top 376%)
24M24.00 mi1.00 mi10673+478296+398296+399902(Top 37%)7348(Top 48%)7348(Top 358%)
40K24.85 mi0.85 mi10595+788214+828214+829573(Top 36%)7120(Top 47%)7120(Top 347%)
25.2M25.20 mi0.35 mi10553+428192+228192+228945(Top 34%)6718(Top 44%)6718(Top 327%)
Finish26.22 mi1.02 mi10648-958220-288220-2813363(Top 50%)8948(Top 59%)8948(Top 436%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9405

Males

7809

M50-54

7809

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9265

Males

7729

M50-54

7729

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9405

Males

7809

M50-54

7809

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10550

Males

8364

M50-54

8364

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11147

Males

8679

M50-54

8679

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11044

Males

8524

M50-54

8524

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12151

Males

8860

M50-54

8860

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

14453

Males

9749

M50-54

9749

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11215

Males

8206

M50-54

8206

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13094

Males

9009

M50-54

9009

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10498

Males

7720

M50-54

7720

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9902

Males

7348

M50-54

7348

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9573

Males

7120

M50-54

7120

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8945

Males

6718

M50-54

6718

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13363

Males

8948

M50-54

8948

Passing Analysis

Category:
Athletes Passed
1514*
Passed By
2207
Net Change
-695
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9953
5K → 10K551145+406#9953#9547
10K → 15K208116+92#9547#9455
15K → 20K75342-267#9455#9722
20K → Half796-89#9722#9811
Half → 25K76256-181#9811#9992
25K → 30K75425-351#9992#10343
30K → 20M21*359-338#10343#10681
20M → 21M7366+7#10681#10674
21M → 35K32113-81#10674#10755
35K → 23M10974+35#10755#10720
23M → 24M8740+47#10720#10673
24M → 40K10224+78#10673#10595
40K → 25.2M5614+42#10595#10553
25.2M → Finish42137-95#10553#10648
TOTALS1514*2207-695

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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